JP4836656B2 - Chemical concentration analysis program, recording medium, and chemical concentration analyzer - Google Patents

Description

  The present invention analyzes the digital image data obtained by scanning the surface of the chemical reaction paper using the chemical reaction paper that reacts to the adhesion of the chemical to be sprayed. The present invention relates to a chemical concentration analysis program for calculating residual concentration data, a recording medium storing the program, and a chemical concentration analysis apparatus in which the program is installed.

  In order to prevent damage caused by pests and weeds, pesticides (equivalent to drugs) are indispensable when cultivating crops. Such agricultural chemicals are in the form of powder or liquid, and are sprayed from a nozzle when sprayed on agricultural products. Such pesticides should be sprayed only on the crops that are to be sprayed, but they can also be scattered on crops that are cultivated in wind or other places other than crops or in other places. There is. Such a scattering phenomenon is called drift. The pesticide sprayed by the drift phenomenon moves on the wind and may cause unexpected problems in the lee. For example, a pesticide that is permitted for the crop A is scattered in the lee and remains on the crop B that is not permitted. Therefore, when dealing with pesticides, various measures such as selection of appropriate nozzles, proper application of spraying positions, setting of appropriate spraying pressure, selection of pesticides that are difficult to drift, etc. are required to reduce drift. Do.

  In addition, a positive list system will be introduced in May 2006 to control all agricultural chemicals remaining on agricultural products. According to this system, all pesticides remaining on agricultural products have a uniform standard of 0.01 ppm or individual residual standards, and the distribution of agricultural products exceeding the standard is prohibited. Therefore, it is necessary to consider the drift phenomenon of agricultural chemicals more and more, and even when countermeasures for drift reduction are taken, there is an increasing need to confirm the effects of the countermeasures in advance.

  Therefore, there is a method using water sensitive paper (corresponding to chemical reaction paper) as a method for confirming the degree of the drift phenomenon (see Non-Patent Document 1 below). The water sensitive paper changes color when water droplets adhere to it, and it is possible to visually evaluate how much drift occurs with the current pesticide application method and how effective the adopted drift countermeasure results are. Is possible.

Spraying Systems Japan Co., Ltd., “Nozzle-related equipment, water-sensitive test paper”, [Search April 25, 2006], Internet <URL: http://www.spray.co.jp/products/ kansuishi01.html>

  When the evaluation is performed using such water sensitive paper, it is difficult to make an accurate evaluation simply by visually observing the appearance of the discolored water sensitive paper. In particular, when a new system is introduced, it is important to confirm in advance how much residual concentration it will be, and a certain degree of accuracy is also required in such numerical evaluation. Therefore, a method of estimating the residual density by measuring the size of the discolored portion (spotted portion) of the water-sensitive paper and predicting the size of the drifting droplet can be considered.

  However, since the discolored portion of the water-sensitive paper may be composed of an enormous number of spots, measuring the discolored portion requires a lot of labor and takes a long time to obtain a result. Therefore, the burden placed on the worker has been great.

  The present invention has been made in view of the above circumstances, and its problem is to analyze the discolored portion formed on the surface of the chemical reaction paper such as water-sensitive paper and to reduce the concentration data of the chemical contained in the object. It is to provide a chemical concentration analysis program that can be calculated in a timely and accurate manner.

In order to solve the above problems, the chemical concentration analysis program according to the present invention is
Analyzing the digital image data obtained by scanning the surface of the chemical reaction paper using the chemical reaction paper that reacts to the adhesion of the sprayed chemical, the concentration data that the chemical remains in the object A chemical concentration analysis program for calculating
In the computer
Means for calculating image size data of a number of discolored portions included in the image data;
Means for calculating droplet diameter data corresponding to the discolored portion based on the calculated size data;
Means for calculating the total volume data of the droplets from the calculated droplet diameter data;
Based on the total volume data and the characteristic data of the object, a means for calculating the concentration data of the medicine contained in the object is constructed.

  The operation and effect of the chemical concentration analysis program with this configuration will be described. First, the surface of the chemical reaction paper is scanned to obtain digital image data. By analyzing this image data, the concentration data in which the drug finally remains in the object is calculated. The size data of the image of the discolored portion included in the acquired image data (which serves as an index indicating the size of area, radius, diameter, etc.) is calculated. Since the chemical droplets fly in the air and adhere to the surface of the water-sensitive paper, and the color of the part changes, the shape of the color-changed part is often similar to a circle. Since a large number of discolored portions are formed on the chemical reaction paper, an image of the discolored portion is analyzed, and droplet diameter data (the diameter may be a radius or a diameter) corresponding to each discolored portion is calculated. When the drug drifts, the droplets flying in the air can be defined by a sphere. When this spherical droplet adheres to the chemical reaction paper, it can be assumed that it spreads in a plane and becomes, for example, a circle of a predetermined size. Accordingly, it is possible to estimate droplet diameter data of one droplet from one detected discolored partial image. By obtaining this for all the discolored portions, the total volume of the droplets adhering to the water-sensitive paper can be calculated from each droplet diameter data.

  Based on the calculated total volume data and the characteristic data of the object, the concentration data of the medicine contained in the object can be calculated. In other words, this total volume data corresponds to the amount of drug that will fly to the object. From the data such as the size of the object as characteristic data, how much drug remains in the object. You can calculate what you want to do. As described above, the residual concentration contained in an arbitrary object can be obtained by causing the program to execute a predetermined processing procedure after acquiring the image data of the chemical reaction paper. In addition, the droplet diameter is obtained from the image size data of the discolored portion, and the three-dimensional droplet diameter can be estimated from the planar image data, and the residual density can be calculated accurately. Is possible. As a result, to provide a chemical concentration analysis program that can analyze the discolored portion formed on the surface of chemical reaction paper such as water-sensitive paper and accurately calculate the concentration data of the chemical contained in the object in a short time Can do. As a result, to provide a chemical concentration analysis program that can analyze the discolored portion formed on the surface of chemical reaction paper such as water-sensitive paper and accurately calculate the concentration data of the chemical contained in the object in a short time Can do.

In the present invention, based on the calculated total volume data, means for obtaining chemical density data on the chemical reaction paper;
Means for acquiring weight data per unit area when the object is projected on the chemical reaction paper as the characteristic data;
It is preferable that a means for calculating the concentration data of the medicine contained in the object based on the weight data and the density data is further built in the computer.

  When the total volume data is calculated, the density data of the chemical adhered on the chemical reaction paper can be calculated based on the chemical characteristic data. Next, weight data per unit area when the object is projected onto the surface of the chemical reaction paper is obtained. For example, if the residual concentration of a specific vegetable is to be obtained, the vegetable is projected onto the chemical reaction paper. If the area when this is projected beforehand is calculated | required and the weight of the vegetable is measured, weight data can be calculated | required. Thus, weight data per unit area can be acquired, and density data contained in the object can be calculated based on the weight data and density data. According to such a method, the characteristic data of the object can be obtained by a relatively simple method, and the density data can be calculated for an arbitrary object.

  In the present invention, the chemical reaction paper is preferably water-sensitive paper that changes color due to chemical adhesion.

  Water sensitive paper has the property of changing color in response to moisture and is easy to handle. Therefore, the residual concentration can be analyzed by placing the water sensitive paper at a predetermined position with respect to the object and performing a test for adhering chemicals. By changing the place where the water sensitive paper is arranged as appropriate, the residual concentration under various conditions can be analyzed in a short time.

  In the present invention, the droplet diameter data is preferably calculated from size data based on a correlation equation.

  It is estimated that there is a correlation between the area of the discolored portion formed on the chemical reaction paper and the size of the droplet diameter on which the discolored portion is formed. Therefore, the droplet diameter data can be calculated from the color change size data based on the correlation equation. Such correlation data can be obtained in advance by experiments or can be set based on theoretical equations.

  In the present invention, it is preferable that the droplet diameter data is calculated by the correlation equation based on the average diameter data of the discolored portion obtained from the size data and the average diameter data and a coefficient or coefficient equation.

  Since the discolored portion is formed by the droplets that have come in contact with the surface of the chemical reaction paper, average diameter data can be obtained from the shape of the discolored portion. For example, the average diameter can be obtained from the size data of the discolored portion. Then, based on the average diameter data and a coefficient or coefficient expression, the droplet diameter data can be calculated by a correlation expression. This is because two-dimensional droplets spread two-dimensionally when the three-dimensional droplet collides with the chemical reaction paper surface, and the droplet diameter data can be obtained with high accuracy by expressing the spread degree by a coefficient or a coefficient equation.

  In the present invention, it is preferable that a coefficient or a coefficient equation that takes into account the amount of liquid droplets that disappear due to evaporation while drifting in the air is included in the correlation equation.

  In order to obtain the droplet diameter data with higher accuracy, it is preferable to consider the amount that the droplet disappears due to evaporation while drifting in the air. For example, when the location of the target object and the location of the water sensitive paper are separated, it is possible to perform a better concentration analysis by considering such disappearance. It is thought that moisture evaporation of droplets can be calculated by parameters such as wind speed, temperature, humidity, flight distance, etc., so by incorporating such disappearance into the correlation equation in the form of a coefficient or coefficient equation, a more accurate concentration Analysis can be performed.

  In the present invention, when the density data is obtained, it is preferable to calculate the density data of the drug and the ratio data of the analysis target component in the drug.

  When calculating the residual concentration of a chemical, it may be necessary to determine the residual concentration of the analysis target component contained in the chemical. In such a case, the residual concentration of the analysis target component can be calculated based on the dilution ratio data and the ratio data of the analysis target component.

  The chemical concentration analysis program according to the present invention can be stored in a recording medium. Examples of the recording medium include a CD-ROM, a hard disk, and a memory card.

  The chemical concentration analysis program according to the present invention can be installed in a computer to construct a chemical concentration analysis apparatus. Such a computer can be constructed not only by a personal computer but also by installing it in a portable device (mobile phone or small measuring instrument) that can be carried.

  A preferred embodiment of a chemical concentration analysis program according to the present invention and a chemical concentration analysis apparatus in which the chemical concentration analysis program is installed will be described with reference to the drawings. This chemical concentration analysis program is a computer program for analyzing the concentration of agricultural chemicals remaining on a crop such as vegetables (corresponding to an object) using water sensitive paper (corresponding to chemical reaction paper). According to the positive list system that regulates all pesticides remaining on crops, all pesticides remaining on crops have a uniform standard of 0.01 ppm or individual residue standards. There is a need for a system that can perform analysis in a short time. The water-sensitive paper is a paper having a special drug applied on one side, and this drug has a property that it reacts with water and changes its color. This water-sensitive paper has a rectangular shape, the front side is entirely yellow, and when water is applied to the front side, the portion turns blue. It is intended to analyze the residual concentration on the crop by calculating the size of the discolored spots.

  FIG. 1 is a block diagram showing functions of a chemical concentration analysis program. FIG. 1 shows the main functions of the chemical concentration analysis program 1. The scanner 2 has a function of scanning an image on the surface of the water-sensitive paper 3 and capturing image data. The captured digital image data is stored in the image data storage unit 4. The image data may be captured as color image data or monochrome image data as necessary.

  The chemical concentration analysis unit 10 which is the main function of the chemical concentration analysis program 1 will be described. The size data calculation means 11 has a function of calculating spot size data. FIG. 2 is a diagram illustrating a surface image of the water-sensitive paper 3 to which droplets are attached. When the sprayed droplet adheres, the portion is formed as a spot 3a in which the color is changed. A large number of such spots 3a are formed, and the size data is calculated for each spot 3a. For example, the area data of each speckle 3a can be calculated by counting the number of pixels of the discolored portion. When the speckle 3a is assumed to be a circle, the diameter 2r or the radius r is calculated. It can be calculated. Therefore, the size data can be expressed as area data, radius data, and diameter data. When some of the plurality of spots 3a are connected and have an irregular shape, they are separated into a plurality of spots 3a, and size data is acquired for each of the spots 3a.

The droplet diameter data calculating means 12 has a function of calculating droplet diameter data corresponding to the spots 3a based on the calculated size data. The size data calculated from the spots 3a is data relating to a planar shape, and the droplet diameter is calculated from the size data assuming a three-dimensional shape before adhering to the water-sensitive paper 3. The droplet diameter data is calculated on the assumption that the shape of the droplet is a sphere. This is because the diameter 2r (or radius r) of the speckles 3a and the diameter D of the droplets are determined as to what size of the three-dimensional spherical droplet spreads when the droplet collides with the planar water-sensitive paper 3. It is considered that there is a correlation between (or radius D / 2), and droplet diameter data can be calculated based on this correlation. For example,
D = f · r (or D = f (r))
The droplet diameter data can be calculated by the following equation. f is a coefficient or a coefficient expression, and details will be described later. The correlation formula can be preset in the correlation formula data setting means 30, and the droplet diameter data calculation means 12 calculates the droplet diameter data based on the set correlation formula data. The correlation equation can be obtained in advance based on theory and experiment.

  The correlation data is not one, but varies depending on conditions. For example, the coefficient and the coefficient expression may change depending on the size of the spot 3a. The size of the droplet changes immediately after spraying from the nozzle and after a predetermined time has elapsed. This is because the moisture evaporates and becomes a small diameter while the droplets are scattered in the air. How small it is depends on conditions, and varies depending on wind speed, temperature, humidity, time of flight, and the like. Moreover, it changes also with the time which exposes the water sensitive paper 3 to the air. Accordingly, the correlation equation or the coefficient / coefficient equation is different using these conditions as parameters. Therefore, more accurate analysis can be performed by considering these conditions. The calculation condition setting means 31 provides a function for setting such calculation conditions. Specifically, in the summer season when the temperature is 30 ° C., when a 1 mm droplet flies 10 m, the droplet diameter is considered to be reduced to about 0.5 mm.

  When analyzing the residual concentration of a specific component in the droplet, the dilution factor data T of the component and the ratio data P of the analysis target component in the medicine are set as calculation conditions. The agrochemical is not composed of a single component but is composed of a plurality of components, and the above data needs to be taken into account when concentration analysis is performed on a specific component among them. In addition, when the agrochemical is diluted with water and used, the dilution rate data T is also necessary for calculating the residual concentration. By setting these data, a more accurate residual density can be calculated.

  The total volume data calculating means 13 calculates the total volume data of the droplets attached to the water sensitive paper 3 from the calculated droplet diameter data. Since the droplet diameter data is obtained for each spot 3a, the droplet volume data can be calculated for each spot 3a by obtaining the droplet diameter data for all the spots 3a. By adding all these, the total volume data V can be calculated.

From the dilution factor data T described above, the stock solution amount Vt of the pesticide contained in the droplet is
Vt = V / T
It can be calculated by.

Moreover, from the ratio data P of the analysis target component in the pesticide, the amount Vx of the analysis target component is
Vx = Vt × P
It can be calculated by.

The density data calculation unit 14 has a function of calculating density data of chemicals on the surface of the water sensitive paper. When the area data of the water sensitive paper 3 is A, the density data Vp of the analysis target component is obtained from the above-described amount Vx of the analysis target component
Vp = Vx / A
It can be calculated by.

  The area data of the water sensitive paper 3 is preset by the water sensitive paper area setting means 32. Since the size of the water sensitive paper 3 differs depending on the manufacturer, model number, etc., the area data corresponding to the water sensitive paper 3 to be used is used for the calculation.

The weight data calculation means 15 has a function of obtaining unit weight data Wu per unit area when the target crop is projected onto the water-sensitive paper 3. The unit weight data Wu is calculated from the horizontal projected area Aa of the crop and the total weight W of the crop.
Wu = W / Aa
It can be calculated by.

  This will be briefly described with reference to FIG. In FIG. 3, cabbage that is an example of an agricultural product is projected onto the water-sensitive paper 3. The projected area Aa can be measured by an appropriate method. The projected area data can be acquired by photographing a water sensitive paper image in which a shadow is formed on the water sensitive paper 3 by actually projecting it with a digital camera or the like and calculating the area of the shadow portion. In addition, a projected image of agricultural products may be acquired using a copying machine. The horizontal projection area Aa can be obtained using the function of the size data calculation means 11. The unit weight data W can be measured with a separate weighing scale. The object data setting means 33 is set with weight data and the like necessary for obtaining the unit weight data Wu. Necessary data is preferably set in advance by constructing a database for each type of crop.

The concentration data calculation means 16 has a function of calculating the residual concentration contained in the crop. The residual concentration PPM is obtained from density data Vp and unit weight data Wu.
PPM = Vp / Wu
It can be calculated by.

  Other auxiliary functions of the chemical concentration analyzer 10 will be described. The droplet number calculation means 17 counts the number of spots 3 a (= number of droplets) included in the image data of the water sensitive paper 3. It is possible to know how many droplets have come from this number data. The average droplet diameter calculator 18 calculates the average droplet diameter data using the droplet diameter data calculated by the droplet diameter data calculator 12. Specifically, the average droplet diameter data can be calculated by adding the droplet diameter data for all droplets and dividing this by the droplet number data.

  The spot total area calculating means 19 calculates the total area data of the spots 3 a formed on the water sensitive paper 3. The spot density calculating means 20 calculates the density data (area ratio data) of the spots 3 formed on the water sensitive paper 3. The droplet size distribution graph calculation means 21 has a function of generating display data for visualizing the droplet size distribution with a graph.

  The image processing unit 25 provides a function of performing image processing on image data acquired through the scanner 2. For example, the obtained multi-gradation image data can be processed with a predetermined threshold value to generate binarized image data, or a process of extracting a discolored portion can be performed.

  When the operator performs an analysis work, the monitor 5 displays the captured image data or gives a command for proceeding with the analysis work. The analysis result is displayed on the monitor 5. The input operation unit 6 includes a mouse, a keyboard, and the like, and inputs data necessary for analysis and various commands.

<Analysis procedure>
Next, a schematic procedure for performing concentration analysis using the chemical concentration analysis program 1 shown in FIG. 1 will be described with reference to the flowchart of FIG. First, the pesticide adhesion test is performed by spraying the pesticide using the water sensitive paper 3. The arrangement of the nozzle for spraying the pesticide and the water sensitive paper 3 can be appropriately performed according to the situation. For example, the water sensitive paper 3 can be set at a position that is very close to a target crop or a predetermined distance away. Such arrangement data can be set as calculation conditions. In addition, the environmental conditions (temperature, humidity, etc.) of the test day are also measured and set in the calculation condition setting means 31.

  After the test, the image data of the water sensitive paper is taken in (S1). Image data is captured by the scanner 2, and the digital image data is temporarily stored in the image data storage unit 4 (S2). Next, using the function of the image processing unit 25, binary image data of the image data is generated (S3). The captured original image data is multi-gradation image data, which is converted into binary image data of “0” or “1”. The threshold value for binarization may be set in advance or may be automatically set based on the density histogram of the acquired image data. FIG. 5 shows original image data (a) of water-sensitive paper and image data (b) obtained by binarizing the water-sensitive paper when the pesticide is actually sprayed. In the binarized image data, the speckle portion is changed to a white image portion, and the other regions are changed to black image portions.

  Next, speckle analysis processing is performed using the generated binarized image data (S4). Specifically, the size data calculation means 11 calculates the size data of individual spots. As described above, the size data can be acquired as area data, diameter data, and radius data. Next, a droplet diameter analysis process is performed by the function of the droplet diameter data calculating means 12 using the correlation formula from the calculated size data (S5). The correlation formula is as described above, and the calculation based on the correlation formula is performed in consideration of various conditions depending on circumstances. Thereby, the droplet diameter data of all the droplets flying on the water sensitive paper 3 can be obtained. When the individual droplet diameter data is obtained, the total volume data of the droplets can be calculated by the function of the total volume data calculating means 13 (S6).

  Next, the density data of the droplets on the water sensitive paper 3 is calculated using the function of the density data calculating means 14 (S7). Next, the unit weight data of the crop on the water sensitive paper 3 is acquired using the function of the weight data calculation means 15 (S8). The residual concentration can be calculated using the weight data and the density data (S9). The calculated result is displayed on the monitor 6 (S10).

  FIG. 6 shows an example of the analysis result, and the particle size distribution of the droplets is displayed as a graph. In this graph, the horizontal axis represents the droplet diameter, and the vertical axis represents the number. Further, on the right side of the graph, in addition to various analyzed data, that is, the residual density (PPM), calculation results such as the number of droplets, the droplet density, and the average droplet diameter are displayed.

<Specific examples of correlation equations>
Next, a specific example of the correlation equation will be described. The droplets were actually sprayed from the nozzle onto the water sensitive paper, and the relationship between the diameter of the spots formed on the water sensitive paper and the diameter of the sprayed liquid droplets was determined. The results are shown in the graph of FIG. There are 18 types of nozzles used, and 18 points are plotted. Since a number of spots are formed for each nozzle, the arithmetic average diameter is taken on the horizontal axis (x), and the arithmetic average diameter of the droplet diameters obtained by the immersion method is taken on the vertical axis (y). As can be seen from this graph, there is a clear correlation between the two.
y = (K1) x ^(K2)
It becomes. In this correlation equation, K1 and K2 are coefficients (constants). When K2≈1.0, it may be expressed as a linear equation. K1 and K2 are determined depending on the calculation conditions.

  FIG. 8 shows an example of a form for receiving a concentration analysis request using the chemical concentration analysis program according to the present invention and an analysis result output form. Ask the client to enter each item using the "specified conditions" form. The data input here is set by the above-described water sensitive paper area setting means 32, the object data setting means 33, etc., and the residual density and the like are analyzed.

  In the output form of the analysis result, the residual pesticide concentration when the pesticide is scattered, the density of the scattered pesticide, and other various analysis results are displayed as numerical values and graphs.

<Another embodiment>
By installing the chemical concentration analysis program according to the present invention in a computer such as a personal computer, the computer can be configured as a chemical concentration analyzer. This program can be installed in devices other than personal computers (for example, devices having portability). For example, the program can be installed and used in a portable concentration checker having an appearance like a barcode reader. Further, the density checker is provided with a camera function for acquiring a water sensitive paper image. As a result, a test can be performed using water sensitive paper at an agricultural site, and the residual concentration can be analyzed instantaneously using a concentration checker on the spot. It is very useful because it can be confirmed immediately on site.

  In addition, it is possible to take a water sensitive paper image by using the camera function of the mobile phone by installing it by downloading the program to the mobile phone. For the processing after obtaining the image data, the processing procedure as described above can be used, and the analysis result can be displayed using the liquid crystal screen provided in the mobile phone.

Block diagram showing functions of chemical concentration analysis program Figure showing an image of water sensitive paper with droplets attached Diagram explaining the principle when obtaining weight data Flow chart showing the procedure for obtaining the residual concentration Diagram showing comparison between original image data and binarized image data Diagram showing an example of analysis results Graph showing an example of the correlation equation Figure showing an example of the analysis result output form

Explanation of symbols

1 Chemical concentration analysis program 2 Scanner 3 Water sensitive paper 3a Spots (discolored part)
DESCRIPTION OF SYMBOLS 10 Chemical concentration analysis part 11 Size data calculation means 12 Droplet diameter data calculation means 13 Total volume data calculation means 14 Density data calculation means 15 Weight data calculation means 16 Concentration data calculation means 17 Droplet number calculation means 18 Average droplet diameter calculation Means 19 Spot total area calculating means 20 Spot density calculating means 21 Droplet particle size distribution graph calculating means 30 Correlation equation data setting means 31 Calculation condition setting means 32 Water sensitive paper area setting means 33 Object data setting means

Claims (10)

Analyzing the digital image data obtained by scanning the surface of the chemical reaction paper using the chemical reaction paper that reacts to the adhesion of the sprayed chemical, the concentration data that the chemical remains in the object A chemical concentration analysis program for calculating
In the computer
Means for calculating image size data of a number of discolored portions included in the image data;
Means for calculating droplet diameter data corresponding to the discolored portion based on the calculated size data;
Means for calculating the total volume data of the droplets from the calculated droplet diameter data;
A chemical concentration analysis program for constructing a means for calculating concentration data of a chemical contained in an object based on the total volume data and characteristic data of the object. Based on the calculated total volume data, a means for obtaining chemical density data on the chemical reaction paper;
Means for acquiring weight data per unit area when the object is projected on the chemical reaction paper as the characteristic data;
2. The chemical concentration analysis program according to claim 1, wherein means for calculating the concentration data of the chemical contained in the object based on the weight data and density data is further constructed in the computer.   The chemical concentration analysis program according to claim 1 or 2, wherein the chemical reaction paper is water-sensitive paper that changes color due to adhesion of the chemical.   The chemical concentration analysis program according to any one of claims 1 to 3, wherein the droplet diameter data is calculated from size data based on a correlation equation.   5. The droplet diameter data is calculated by the correlation equation based on the average diameter data of the discolored portion obtained from the size data and the average diameter data and a coefficient or coefficient equation. Chemical concentration analysis program described in 1.   6. The chemical concentration analysis program according to claim 4 or 5, wherein a coefficient or a coefficient equation that takes into account the amount of liquid droplets that disappear due to evaporation while drifting in the air is included in the correlation equation.   The chemical concentration according to any one of claims 1 to 6, wherein when calculating the density data, calculation is performed in consideration of dilution factor data of chemicals and ratio data of analysis target components in the chemicals. Analysis program.   The recording medium which stored the chemical | medical agent concentration analysis program of any one of Claims 1-7.   The chemical | medical agent concentration analysis apparatus constructed | assembled by installing the chemical | medical agent concentration analysis program of any one of Claims 1-7 in a computer.   The chemical concentration analyzer according to claim 9, wherein the computer is a portable device.

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