JPH087204B2 - Test piece for moisture determination - Google Patents
Test piece for moisture determinationInfo
- Publication number
- JPH087204B2 JPH087204B2 JP15243187A JP15243187A JPH087204B2 JP H087204 B2 JPH087204 B2 JP H087204B2 JP 15243187 A JP15243187 A JP 15243187A JP 15243187 A JP15243187 A JP 15243187A JP H087204 B2 JPH087204 B2 JP H087204B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- test piece
- water content
- thiocyanate
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は有機溶剤（ドライクリーニング等）、油脂、
食品（酒等）、水溶性切削油、不凍液、及び燃料油等に
含まれる水分量を判定する試験片に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to organic solvents (dry cleaning, etc.), oils and fats,
The present invention relates to a test piece for determining the amount of water contained in food (liquor, etc.), water-soluble cutting oil, antifreeze, fuel oil, etc.
（従来の技術） 油中の水分測定方法としてはカールフィッシャー法
（JIS K 3362）や蒸留法（JIS K 2275）等が既に知られ
ている。市販の水分計としては赤外線水分計（ケット科
学研究所製）や水の電気分解を利用した電解型水分計
（ベックマン社製水分計）、又多孔性酸化アルミニウム
薄膜の静電変化を利用した、静電容量型水分計（例えば
パナトリック社製水分計）等が知られている。(Prior Art) Karl Fischer method (JIS K 3362), distillation method (JIS K 2275) and the like are already known as methods for measuring water content in oil. As a commercially available moisture meter, an infrared moisture meter (manufactured by Kett Science Laboratories), an electrolytic moisture meter that utilizes electrolysis of water (a moisture meter manufactured by Beckman), or an electrostatic change of a porous aluminum oxide thin film was used. A capacitance type moisture meter (for example, a moisture meter manufactured by Panatric) is known.
これら水分測定方法は微量水分を測定しうる方法であ
り、又水分計は固体及び気体中の水分の測定には適して
いるものの液体試料の高濃度水分を測定するには適して
いない。These water content measuring methods are methods capable of measuring a very small amount of water, and the water content meter is suitable for measuring the water content in solids and gases, but is not suitable for measuring the high concentration water content of a liquid sample.
更に装置の価格が高く、取り扱い難く、且つ多少なり
とも専門的な知識あるいは熟練を要し、とても一般的で
あるとは言いえない。Furthermore, the price of the device is high, it is difficult to handle, and it requires a certain amount of specialized knowledge or skill, and cannot be said to be very general.
（発明が解決しようとする問題点） 近年、金属材料の切削加工に水溶性切削油が多く使用
されて来た。この水溶性切削油は高速切削作業には欠か
せなく摩擦熱による温度上昇を防ぐ目的で水分（数十
％）が乳化含有されている。(Problems to be Solved by the Invention) In recent years, a large amount of water-soluble cutting oil has been used for cutting metal materials. This water-soluble cutting oil is essential for high-speed cutting work and contains water (several tens%) in an emulsified content for the purpose of preventing a temperature rise due to frictional heat.
この水分のチェックは切削加工の精度向上に極めて重
要であり品質管理のポイントである。しかし、実際には
現場で簡単に水分量を判定する方法がなく水分量のチェ
ックは行なわず、熟練工の勘に頼っているのが現状であ
る。This moisture check is extremely important for improving the accuracy of cutting and is a key to quality control. However, in reality, there is no method for easily determining the water content at the site, and the water content is not checked.
一方、自動車のラジエータの冷却液（不凍液）の水分
量の測定はラジエータの腐食防止及び不凍液の交換時期
の目安をうるのに重要であり、不凍液中に70％以上水分
が混入した場合は不凍液を交換するように勧められてい
る。On the other hand, the measurement of the water content of the cooling liquid (antifreeze liquid) of the radiator of an automobile is important to prevent the corrosion of the radiator and the time when the antifreeze liquid should be replaced. Recommended to replace.
しかし、現在のところこのような液体試料中の高濃度
の水分量を測定する方法が少ない。まして手軽に簡単に
誰れでも短時間で液体試料中の高濃度水分量を判定出来
る方法手段が見付かればその利用価値は大きく甚だ有益
なものと期待され、その出現が望まれていた。However, at present, there are few methods for measuring the high-concentration water content in such a liquid sample. Furthermore, if a method capable of easily and easily determining the high-concentration water content in a liquid sample by anyone in a short time can be found, its utility value is expected to be great and very useful, and its appearance has been desired.
（問題点を解決するための手段） 本発明者は、この様な従来の問題点を克服すべく種々
研究を続けて来たが、ここにすぐれた利点を持ち、且つ
実用性の高い本発明を完成した。(Means for Solving Problems) The present inventor has continued various researches to overcome such conventional problems, but the present invention has excellent advantages and is highly practical. Was completed.
すなわち本発明は、液体試料中に含まれる水分量を判
定する試験片であり、その要旨とするところは、水溶性
コバルト塩、及びチオシアン酸塩を担持体に担持してな
る試験紙にある。That is, the present invention is a test piece for determining the amount of water contained in a liquid sample, and the gist thereof is a test paper in which a water-soluble cobalt salt and thiocyanate are carried on a carrier.
本発明の試験片の使用方法は、水分量を測定すべき液
体、例えば水溶性切削油に浸漬（滴加する場合もある）
し、取り出し、予め被測定液中の水分を分析して作成さ
れた色調表と比較して被測定液中の水分量を判定するよ
うにするものである。The test piece of the present invention is used by immersing it in a liquid whose water content is to be measured, for example, water-soluble cutting oil (may be added dropwise).
Then, the water content in the liquid to be measured is determined by comparing it with a color tone table prepared by analyzing the water content in the liquid to be measured in advance.
本発明の試験片の原理はコバルト塩が水化物を作りそ
の水化物の結晶水の含量の多いものほど赤色に、少ない
ものほど青色に近い色を持っていることを利用するもの
である。The principle of the test piece of the present invention utilizes the fact that the cobalt salt forms a hydrate and has a reddish color when the content of crystal water of the hydrate is high, and a blue color when the content is low.
例えば、CoCl26H2Oは淡赤色、CoCl24H2Oは桃色）、Co
Cl22H2Oは淡赤紫色、2CoCCl23H2Oは赤紫色、CoCl2H2Oは
暗青紫色、CoCl2は淡青色であることを利用する。For example, CoCl 2 6H 2 O is pale red, CoCl 2 4H 2 O is pink), Co
It is utilized that Cl 2 2H 2 O is pale magenta, 2CoCCl 2 3H 2 O is magenta, CoCl 2 H 2 O is dark blue purple, and CoCl 2 is pale blue.
このようにコバルトイオンの周囲に配位している水分
子の数が多いものは赤色、少ないものは青色に近い色を
もっている。コバルト塩に親水性の強いチオシアン酸塩
を添加すると、コバルトイオンの周囲に配位する水分子
の数が減少する。チオシアン酸塩の添加比率を変える事
により水との反応を任意に調節する事が可能になり、こ
の方法を試験片に応用した液体試料中の高濃度水分判定
試験片である。In this way, the one having a large number of water molecules coordinated around the cobalt ion has a red color, and the one having a small number has a color close to blue. The addition of a highly hydrophilic thiocyanate to the cobalt salt reduces the number of water molecules coordinated around the cobalt ion. It is possible to arbitrarily control the reaction with water by changing the addition ratio of thiocyanate, and this method is applied to a test piece to judge the high-concentration water content in a liquid sample.
コバルト塩としては塩化コバルト、硝酸コバルト、硫
酸コバルト、酢酸コバルト等が好ましく、量的には３〜
40％、有利には５〜30％の量を添加するのが望ましい。The cobalt salt is preferably cobalt chloride, cobalt nitrate, cobalt sulfate, cobalt acetate, etc.
It is desirable to add an amount of 40%, preferably 5-30%.
チオシアン酸塩としてはチオシアン酸アンモン、チオ
シアン酸ナトリウム、チオシアン酸カリウム等が好まし
く、量的には0.1〜20％、有利には３〜15％の量を添加
するのが望ましい。更に担持体としてはガラス繊維濾
紙、セルロース繊維濾紙、合成繊維濾紙、木片、布、シ
リカゲル、合成ゼオライト及び紙等で吸水性の物質であ
ればいずれの物質でも使用が可能であるが取り扱いの点
ではセルロース繊維濾紙が好ましい。As the thiocyanate, ammonium thiocyanate, sodium thiocyanate, potassium thiocyanate and the like are preferable, and it is desirable to add 0.1-20%, preferably 3-15%. Further, as the carrier, any substance can be used as long as it is a water-absorbing substance such as glass fiber filter paper, cellulose fiber filter paper, synthetic fiber filter paper, wood chips, cloth, silica gel, synthetic zeolite and paper, but in terms of handling. Cellulose fiber filter paper is preferred.
次に本発明を以下の実施例により更に具体的に説明す
るが、これにより本発明の範囲が限定されるものでな
い。Next, the present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
（実施例） 塩化コバルト6H2O 5g チオシアン酸アンモニウム 4g 純水 110ml 上記組成の溶液に東洋濾紙No.5Bを浸漬し、80℃乾燥
機中で約１時間程度乾燥する。このように乾燥した濾紙
を5m/m×5m/mに切断し、5m/m×85m/mのプラスチックフ
ィルムの先端に貼付して液体試料中の高濃度水分判定用
試験片を作成する。(Example) Cobalt chloride 6H 2 O 5 g Ammonium thiocyanate 4 g Pure water 110 ml Toyo filter paper No. 5B was dipped in the solution having the above composition and dried in an oven at 80 ° C. for about 1 hour. The thus dried filter paper is cut into 5 m / m × 5 m / m and attached to the tip of a 5 m / m × 85 m / m plastic film to prepare a test piece for determining high-concentration water in a liquid sample.
本試験片は下記の水分量が異なる水溶性切削油（出光
興産ダフニークール6912）に浸漬するとそれぞれ異なる
呈色を示す。The test pieces show different colors when immersed in the following water-soluble cutting oils having different water contents (Idemitsu Kosan Daphne Cool 6912).
（発明の効果） 本発明の水分判定用試験片を用いれば特殊な測定装置
を使用せず誰でも簡単且つ短時間にいかなる場所におい
ても水溶性切削油及び不凍液の様な液体試料中の水分量
を測定することが出来るので産業上裨益するところが極
めて大である。 (Effects of the Invention) With the moisture determination test piece of the present invention, anyone can easily and quickly use a water-soluble cutting oil and an antifreeze in a liquid sample at any place without using a special measuring device. Can be measured, which is extremely beneficial to the industry.
Claims (1)
持体に担持してなる水分判定用試験片。1. A water-determining test piece comprising a water-soluble cobalt salt and a thiocyanate supported on a carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15243187A JPH087204B2 (en) | 1987-06-20 | 1987-06-20 | Test piece for moisture determination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15243187A JPH087204B2 (en) | 1987-06-20 | 1987-06-20 | Test piece for moisture determination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63317765A JPS63317765A (en) | 1988-12-26 |
| JPH087204B2 true JPH087204B2 (en) | 1996-01-29 |
Family
ID=15540378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15243187A Expired - Lifetime JPH087204B2 (en) | 1987-06-20 | 1987-06-20 | Test piece for moisture determination |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087204B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ301065B6 (en) * | 2002-04-11 | 2009-10-29 | Method of operational measurement of cellulose material wetting in power transformers and apparatus for making the same | |
| GB0405648D0 (en) * | 2004-03-12 | 2004-04-21 | Bloomsbury Innovations Ltd | Apparatus |
| WO2009111370A2 (en) * | 2008-03-04 | 2009-09-11 | 3M Innovative Properties Company | Monitoring of frying oil quality using combined optical interrogation methods and devices |
-
1987
- 1987-06-20 JP JP15243187A patent/JPH087204B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63317765A (en) | 1988-12-26 |
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