CN1648642A - Molybdate radical ion and nitrite radical ion concentration test card and its preparing method - Google Patents
Molybdate radical ion and nitrite radical ion concentration test card and its preparing method Download PDFInfo
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- CN1648642A CN1648642A CNA2005100182142A CN200510018214A CN1648642A CN 1648642 A CN1648642 A CN 1648642A CN A2005100182142 A CNA2005100182142 A CN A2005100182142A CN 200510018214 A CN200510018214 A CN 200510018214A CN 1648642 A CN1648642 A CN 1648642A
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Abstract
The present invention relates to a kind of molybdate radical ion and nitrite radical ion concentration test card and its preparation process. The test card includes test paper and standard color check card, and the test paper has molybdate radical ion indicating color developing paper sheet and nitrite radical ion indicating color developing paper sheet fixed on the base sheet. The molybdate radical ion indicating color developing paper sheet is prepared through soaking filter paper in mixed solution of gallic acid and hydroxylamine sulfate, drying and photophobic keeping; and the nitrite radical ion indicating color developing paper sheet is prepared through soaking filter paper in mixed solution ofaminobenzene sulfonic acid, dihydrochloride-1-naphthyl ethylene diamine and tartaric acid, drying and photophobic keeping. The present invention may be used in testing the concentration of molybdate radical ion and nitrite radical ion simultaneously.
Description
One, technical field
The present invention relates to a kind of anion concentration test card and preparation method thereof, relate in particular to a kind of molybdenum acid ion and nitrite ion concentration determination card and preparation method thereof.
Two, background technology
Various metals and alloy have been comprised in the automotive engine cooling system, as copper, scolding tin, brass, iron, cast iron, aluminium and magnesium.These metals are vulnerable to corrosion in corrosive liquids and under the environment such as High Temperature High Pressure, thereby influence the operate as normal of engine chamber, cause engine overheat malfunctioning.Therefore the engine failure rate that annual heavy type mining car engine cooling system causes will in time maintain cooling system up to 40%, keeps liquid coolant in normal solidifying point, guarantees corrosion inhibitor in appropriate level, and seeming is even more important.Corrosion inhibitor is usually added in the engine coolant; as: adding silicate is to protect aluminium, to add nitrite to protect cast iron, to add pyrrole to protect copper and brass, adding molybdate to protect carbon steel; but corrosion inhibitor can be consumed gradually, at this moment needs to add new liquid coolant and detects corrosion inhibitor content.
For detecting corrosion inhibitor content, people are seeking various detection methods, and the technology that detects anion concentration with colourimetry is one of them, existing at present pertinent literature report.Measure molybdenum content with molybdenum-thiocyanate-rhodamine B-polyvinyl alcohol system (rattan is given birth quick as a kind of, Xu Shengjie. the research of ultra-high sensitive chromogenic reaction and application thereof [J]. analytical chemistry, 1991,19 (5): method 514-518), colour temp must be controlled at 7～13 ℃, makes troubles to practical application; As adopt molybdenum-thiocarbamide-copper-thiocyanate-rhodamine B-polyvinyl alcohol (PVA) high sensitivity color development system to measure the molybdenum (Yang Bingyi of trace, Chen Zhicheng, Zhou Yonghong, etc. the high sensitivity chromogenic reaction is measured the molybdenum and the mechanism pre-test [J] thereof of trace. spectrum experiment, 2000,17 (3): method 322-325), though preceding method is improved, can 10～25 ℃ of normal colour developings, but agents useful for same has seven kinds more than, and this reaction can only realize in solution, can not make the test strips of being convenient to operate; As utilize butyl rhodamine b to replace rhodamine B to measure molybdenum content and (open east, public big state, Wang Yanjun. the high sensitivity color development system is measured the molybdenum [J] of trace. Shenyang Institute of Technology's journal, 2003,22 (2): technology 57-60), molar absorptivity greatly improves, but has the problem that reagent dosage is many, cost is high, be difficult for realizing on test strips equally; Measure the preparation method (US 5106581) of molybdenum acid ion concentration test strips, the same with above-described document, can only measure a kind of concentration of ion; As a kind of testing cassete of online detection nitrite (Lou Ming. nitrite online measuring technique testing cassete research [J] in the food. meat industry, 2003,265 (5): 30-34), after utilizing nitrite and sulfanilic acid diazo-reaction, generate azo dyes with the hydrochloride naphthodiamide coupling reaction again, but whether content of nitrite meets international standard in the food because of this method only limits to detect, so the concentration range of its measurement is narrower; And a kind of nitrite detects the preparation method (CN03130015.4) of test paper, can only measure a kind of nitrite ion, and two step dipping and dry runs are arranged in the test paper making, and technology is loaded down with trivial details relatively.
Three, summary of the invention
The purpose of this invention is to provide a kind of with low cost, preparation method that technology simply is used for testing liquid coolant molybdenum acid ion and nitrite ion concentration determination card, with the prepared test card of this method, can detect the concentration of molybdenum acid ion and two kinds of ions of nitrite ion in the liquid coolant simultaneously, and can under various environment, supply field quick detection easily, detect degree of accuracy height, good reproducibility, simple to operate, be not subjected to temperature limitation.
For achieving the above object, the technical solution adopted in the present invention is: test card comprises test paper and standard color comparison card; Test paper is with the colour developing scraps of paper of indication molybdenum acid ion and indicates the colour developing scraps of paper of nitrite ion to be fixed on the substrate;
The preparation method of the colour developing scraps of paper of indication molybdenum acid ion is: filter paper is soaked 15min in the mixed liquor of the alcoholic solution of 20～55g/L gallic acid and 40～245g/L Hydroxylamine sulfate solution, dry 12h under 25～60 ℃ of conditions keeps in Dark Place;
The preparation method of the colour developing scraps of paper of indication nitrite ion is: filter paper is soaked 15min in 16～30g/L aminobenzenesulfonic acid, 8～25g/L, two hydrochloric acid-1-naphthodiamide, the tartaric mixed liquor of 50～120g/L, dry 24h under 25～60 ℃ of conditions keeps in Dark Place.
Wherein: the filter paper material is common quantitative filter paper or common qualitative filter paper, is cut into rectangular tiles after immersion, the drying;
The alcoholic solution of gallic acid is a kind of in the methyl alcohol, ethanol, n-propanol, isopropyl alcohol, glycerine solution of gallic acid.
The material of substrate is the PVC material of white, and thickness is 0.8～3mm, and it is rectangular to be cut into rectangle;
The colour developing scraps of paper of indication molybdenum acid ion are fixed on the end of substrate, and the colour developing scraps of paper of indication nitrite ion are fixed on the substrate middle part, the center distance 〉=20mm of the colour developing scraps of paper of the colour developing scraps of paper of indication molybdenum acid ion and indication nitrite ion;
Standard color comparison card is that the color that the salt solusion according to various variable concentrations is presented on test paper is made.
Owing to adopt technique scheme, the colour developing scraps of paper of the present invention only need once to soak in the preparation, so technology is simple, with low cost; Prepared test card, only need the concentration that just can test molybdenum acid ion and two kinds of ions of nitrite ion in the liquid coolant simultaneously with one, and can be under various environment use fast, be not subjected to temperature limitation for on-the-spot, have quick accurately, good reproducibility, characteristics simple to operate.
Four, description of drawings
Fig. 1 is a kind of shape, the position view of test paper of the present invention;
Fig. 2 is a kind of shape, the color synoptic diagram of standard color comparison card of the present invention.
Five, embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1
A kind of test card that detects molybdenum acid ion and nitrite ion content in the liquid coolant and preparation method thereof, test card comprises test paper and standard color comparison card.The preparation method of test paper is:
The colour developing scraps of paper [1] preparation method of indication molybdenum acid ion is: common quantitative filter paper is soaked in 15min in the mixed liquor of the methanol solution of 53g/L gallic acid and 225g/L Hydroxylamine sulfate solution, taking-up places in the drying box, 25～30 ℃ of temperature controls, dry 12h is cut into the rectangular tiles of 5 * 10mm;
The preparation method of the colour developing scraps of paper [2] of indication nitrite ion is: common quantitative filter paper is soaked in 15min in the tartaric mixed liquor of the sulfanilic acid of 16g/L, two hydrochloric acid of 8g/L-1-naphthodiamide and 50g/L, taking-up places in the drying box, 25～30 ℃ of temperature controls, dry 24h is cut into the rectangular tiles of 5 * 10mm.
Then as shown in Figure 1, the colour developing scraps of paper [1] of prepared indication molybdenum acid ion and the colour developing scraps of paper [2] of indication nitrite ion are fixed on the substrate [3].The colour developing scraps of paper [1] of indication molybdenum acid ion are fixed on the end of substrate [3], the colour developing scraps of paper [2] of indication nitrite ion are fixed on substrate [3] middle part, the center distance 〉=20mm of the colour developing scraps of paper [2] of the colour developing scraps of paper [1] of indication molybdenum acid ion and indication nitrite ion.Substrate [3] is the white PVC material of thickness 1mm, is shaped as the elongated rectangular shape of 5 * 50mm.
Standard color comparison card is that the color that the salt solusion according to various variable concentrations is manifested on test paper is made.
Present embodiment in use, at first get contain molybdenum acid ion and nitrite ion engine coolant as test sample.Immerse shown color after the liquid coolant according to two the colour developings scraps of paper [1], [2] on the test strips again, compare, judge the concentration of molybdenum acid ion and nitrite ion in the liquid coolant with standard color comparison card.
Embodiment 2
A kind of test card that detects molybdenum acid ion and nitrite ion content in the liquid coolant and preparation method thereof, test card comprises test paper and standard color comparison card.The preparation method of test paper is:
The colour developing scraps of paper [1] preparation method of indication molybdenum acid ion is: common quantitative filter paper is soaked in 15min in the mixed liquor of the ethanolic solution of 22g/L gallic acid and 50g/L Hydroxylamine sulfate solution, taking-up places in the drying box, 60～65 ℃ of temperature controls, dry 12h is cut into the rectangular tiles of 5 * 10mm;
The preparation method of the colour developing scraps of paper [2] of indication nitrite ion is: common quantitative filter paper is soaked in 15min in the tartaric mixed liquor of the sulfanilic acid of 30g/L, two hydrochloric acid of 25g/L-1-naphthodiamide and 120g/L, taking-up places in the drying box, 60～65 ℃ of temperature controls, dry 24h is cut into the rectangular tiles of 5 * 10mm.
Other is as described in the embodiment 1.
Embodiment 3
A kind of test card that detects molybdenum acid ion and nitrite ion content in the liquid coolant and preparation method thereof, test card comprises test paper and standard color comparison card.The preparation method of test paper is:
The colour developing scraps of paper [1] preparation method of indication molybdenum acid ion is: common quantitative filter paper is soaked in 15min in the mixed liquor of the n-propanol solution of 39g/L gallic acid and 75g/L Hydroxylamine sulfate solution, taking-up places in the drying box, 35～40 ℃ of temperature controls, dry 12h is cut into the rectangular tiles of 5 * 10mm;
The preparation method of the colour developing scraps of paper [2] of indication nitrite ion is: common qualitative filter paper is soaked in 15min in 20g/L sulfanilic acid, 15g/L two hydrochloric acid-1-naphthodiamide and the tartaric mixed liquor of 100g/L, take out then and place in the drying box, 30～35 ℃ of temperature controls, dry 24h is cut into the rectangular tiles of 5 * 10mm.
Other is as described in the embodiment 1.
Present embodiment only needs once to soak when the preparation colour developing scraps of paper, so technology is simple, with low cost; Only need just can test the concentration of molybdenum acid ion and two kinds of ions of nitrite ion in the liquid coolant during use with a test paper simultaneously, and be not subjected to temperature limitation, can be easily under various environment, use for the field staff apace, have quick accurately, good reproducibility, characteristics simple to operate.
Claims (7)
1, the preparation method of a kind of molybdenum acid ion and nitrite ion concentration determination card is characterized in that test card comprises test paper and standard color comparison card; Test paper is with the colour developing scraps of paper [1] of indication molybdenum acid ion and indicates the colour developing scraps of paper [2] of nitrite ion to be fixed on the substrate [3], wherein:
The preparation method of the colour developing scraps of paper [1] of indication molybdenum acid ion is, filter paper is soaked 15min in the mixed liquor of the alcoholic solution of 20～55g/L gallic acid and 40～245g/L Hydroxylamine sulfate solution, and dry 12h under 25～60 ℃ of conditions keeps in Dark Place;
The preparation method of the colour developing scraps of paper [2] of indication nitrite ion is, filter paper is soaked 15min in the aminobenzenesulfonic acid of 16～30g/L, two hydrochloric acid of 8～25g/L-1-naphthodiamide, the tartaric mixed liquor of 50～120g/L, dry 24h under 25～60 ℃ of conditions keeps in Dark Place.
2, the preparation method of molybdenum acid ion according to claim 1 and nitrite ion concentration determination card is characterized in that described filter paper material is common quantitative filter paper or common qualitative filter paper, is cut into rectangular tiles after immersion, the drying.
3, the preparation method of molybdenum acid ion according to claim 1 and nitrite ion concentration determination card, the alcoholic solution that it is characterized in that described gallic acid is a kind of in the methyl alcohol, ethanol, n-propanol, isopropyl alcohol, glycerine solution of gallic acid.
4, the preparation method of molybdenum acid ion according to claim 1 and nitrite ion concentration determination card, the material that it is characterized in that described substrate [3] is the PVC material of white, and thickness is 0.8～3mm, and it is rectangular to be cut into rectangle.
5, the preparation method of molybdenum acid ion according to claim 1 and nitrite ion concentration determination card, it is characterized in that the colour developing scraps of paper [1] of described indication molybdenum acid ion are fixed on the end of substrate [3], the colour developing scraps of paper [2] of indication nitrite ion are fixed on substrate [3] middle part, the center distance 〉=20mm of the colour developing scraps of paper [2] of the colour developing scraps of paper [1] of indication molybdenum acid ion and indication nitrite ion.
6, the preparation method of molybdenum acid ion according to claim 1 and nitrite ion concentration determination card is characterized in that described standard color comparison card is that the color that the salt solusion according to various variable concentrations is presented is made on test paper.
7, according to the preparation method of each described molybdenum acid ion in the claim 1～6 and nitrite ion concentration determination card prepared molybdenum acid ion and nitrite ion concentration determination card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510018214 CN1648642B (en) | 2005-01-28 | 2005-01-28 | Molybdate radical ion and nitrite radical ion concentration test card and its preparing method |
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| CN 200510018214 CN1648642B (en) | 2005-01-28 | 2005-01-28 | Molybdate radical ion and nitrite radical ion concentration test card and its preparing method |
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| CN1648642A true CN1648642A (en) | 2005-08-03 |
| CN1648642B CN1648642B (en) | 2010-04-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313733A (en) * | 2010-07-05 | 2012-01-11 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Method for rapid testing hydrogen sulfide content in drilling fluid |
| CN104280383A (en) * | 2013-07-02 | 2015-01-14 | 云南健牛生物科技有限公司 | Rapid detection method for nitrites in blood and urine |
| CN105866117A (en) * | 2016-06-03 | 2016-08-17 | 四川大学 | Detection method for organophosphorus pesticide dimethoate residue based on test paper colorimetry |
| CN111323416A (en) * | 2020-04-22 | 2020-06-23 | 西安培华学院 | Preparation and application methods of test paper for detecting antioxidant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5106581A (en) * | 1991-05-30 | 1992-04-21 | Industrial Test Systems, Inc. | Test device for detection of molybdate, vanadate and ferric ions |
| CN1135603A (en) * | 1995-05-11 | 1996-11-13 | 南京铁道医学院 | Method for making fifteen kinds of test paper for quickly testing common chemical contamination in food |
| CN1445531A (en) * | 2003-04-26 | 2003-10-01 | 福州大学 | Test paper for fast testing nitrite, azotate in vegetables and its testing method |
| CN1769873A (en) * | 2004-11-04 | 2006-05-10 | 上海师范大学 | Strip for quickly determining nitrous radical content in vegetable, preparation and determination method thereof |
-
2005
- 2005-01-28 CN CN 200510018214 patent/CN1648642B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313733A (en) * | 2010-07-05 | 2012-01-11 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Method for rapid testing hydrogen sulfide content in drilling fluid |
| CN102313733B (en) * | 2010-07-05 | 2013-07-31 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Method for rapid testing hydrogen sulfide content in drilling fluid |
| CN104280383A (en) * | 2013-07-02 | 2015-01-14 | 云南健牛生物科技有限公司 | Rapid detection method for nitrites in blood and urine |
| CN105866117A (en) * | 2016-06-03 | 2016-08-17 | 四川大学 | Detection method for organophosphorus pesticide dimethoate residue based on test paper colorimetry |
| CN111323416A (en) * | 2020-04-22 | 2020-06-23 | 西安培华学院 | Preparation and application methods of test paper for detecting antioxidant |
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| CN1648642B (en) | 2010-04-28 |
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