CN100567968C - Chromic method and device thereof in a kind of visual detection electric chrome solution - Google Patents
Chromic method and device thereof in a kind of visual detection electric chrome solution Download PDFInfo
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- CN100567968C CN100567968C CNB200710061736XA CN200710061736A CN100567968C CN 100567968 C CN100567968 C CN 100567968C CN B200710061736X A CNB200710061736X A CN B200710061736XA CN 200710061736 A CN200710061736 A CN 200710061736A CN 100567968 C CN100567968 C CN 100567968C
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Abstract
Chromic method and apparatus in the visual detection electric chrome solution provided by the invention, this method is based on the color of trivalent chromium, sexavalent chrome itself, at first fix chromic concentration, add the trivalent chromium of concentration known more by a certain percentage, preparation obtains six 25mL standard color range color comparison tubes; According to the concentration C of chromic anhybride in the electric chrome solution, by formula V=2000/C determines the volume amount of the getting V of plating bath; With the electric chrome solution of pipette, extract V volume, put into another 25mL color comparison tube, adding distil water is diluted to scale, fully after the vibration evenly, with standard color range color comparison tube colorimetric, calculates and determines chromic concentration or concentration range in the electric chrome solution.This device comprises standard color range color comparison tube, Colorimetric cylinder holder and sample color comparison tube.The method and device are suitable for large, medium and small type Electroplate Factory and use the electrochemistry experiment chamber.
Description
Technical field:
The present invention relates to a kind of chromic detection method, specifically belong to chromic method and device thereof in a kind of visual detection electric chrome solution.
Background technology:
Trivalent chromium is an important indicator that is used for detecting in the electric chrome solution.Chromic concentration is very big to the Electroplating Production influence in the electric chrome solution, and when the trivalent chromium too high levels, the electricity of electric chrome solution is led and can be reduced, and it is brightless to electroplate the product surface that comes out; Cross when low when trivalent chromium content, sedimentation velocity is slow, and the covering power of plating bath descends, and it is soft to electroplate the product surface that comes out, easily peeling.Therefore, keep that certain density trivalent chromium is very important in the electric chrome solution.At present, chromic detection method mainly is traditional indirect titration analysis.This method complicated operation, systematic error and accidental error are bigger, waste time and energy, and need professional's analysis operation.Production firm presses for a kind of easy, efficiently analytical approach and device.
Summary of the invention:
The objective of the invention is to overcome the drawback of traditional titrimetry method, chromic method and device thereof in a kind of visual detection electric chrome solution is provided, this method cheapness, simple, quick, device can be carried, and can popularize use.
Chromic method in a kind of visual detection electric chrome solution provided by the invention, based on the color of trivalent chromium, sexavalent chrome itself, at first fix chromic concentration, add the trivalent chromium of concentration known more by a certain percentage, preparation obtains 6 color comparison tubes, forms the standard color range.Get unknown electric chrome solution, obtain a coloured color comparison tube by operation instruction, with the contrast of standard color range, draw the scope of trivalent chromium content in the electric chrome solution, the method is suitable for large, medium and small type Electroplate Factory and use the electrochemistry experiment chamber.
Chromic method in a kind of visual detection electric chrome solution provided by the invention comprises the steps:
(1) preparation of standard color range color comparison tube: get 6 25mL color comparison tubes, from left to right number consecutivelies; In every color comparison tube, add 500g/L chromic anhybride solution 4.0mL respectively; From left to right add 46g/L Cr (NO successively respectively
3)
3Solution 0.0mL, 2.0mL, 4.0mL, 6.0mL, 8.0mL, 10.0mL, obtain standard color range color comparison tube excessive from the rufous to the claret, represent chromic concentration (g/L) successively: 0.00,0.01 * C, 0.02 * C, 0.03 * C, 0.04 * C, 0.05 * C, wherein C is the concentration of electric chrome solution chromic anhybride;
(2) according to the concentration C of chromic anhybride in the electric chrome solution, by formula V=2000/C determines the volume amount of the getting V of plating bath, and the concentration of chromic anhybride is between the 150g/L-350g/L scope in the general electric chrome solution;
(3) with the electric chrome solution of pipette, extract V volume, put into another 25mL color comparison tube, adding distil water is diluted to scale, fully after the vibration evenly, with standard color range color comparison tube colorimetric, calculates and determines chromic concentration or concentration range in the electric chrome solution.
Chromic device in a kind of visual detection electric chrome solution provided by the invention, comprise standard color range color comparison tube, Colorimetric cylinder holder and sample color comparison tube (see figure 1), described standard color range color comparison tube makes by following method: get 6 25mL color comparison tubes, from left to right number consecutivelies; In every color comparison tube, add 500g/L chromic anhybride solution 4.0mL respectively; From left to right add 46g/L Cr (NO successively respectively
3)
3Solution 0.0mL, 2.0mL, 4.0mL, 6.0mL, 8.0mL, 10.0mL, obtain standard color range color comparison tube excessive from the rufous to the claret, represent chromic concentration (g/L) successively: 0.00,0.01 * C, 0.02 * C, 0.03 * C, 0.04 * C, 0.05 * C, wherein C is the concentration of electric chrome solution chromic anhybride.
The present invention has following advantage: 1, our detected object is an electric chrome solution, need not pre-treatment program, for detection brings great convenience; 2, titrimetry relatively, method of the present invention is time saving and energy saving; 3, mensuration of the present invention is to determine its concentration range by color comparison of naked eye, and testing process is simple, effect is obvious; 4, device of the present invention and reagent cheapness, simple, be easy to carry, be fit to various large, medium and small type Electroplate Factory, use in the electroanalysis laboratory, and popularization and application value are very widely arranged.
Description of drawings:
Fig. 1 is a chromic device synoptic diagram in a kind of visual detection electric chrome solution of the present invention.
Embodiment:
Embodiment 1
The preparation of standard color range color comparison tube: get 6 25mL color comparison tubes, from left to right number consecutivelies; In every color comparison tube, add 500g/L chromic anhybride solution 4.0mL respectively; From left to right add 46g/L Cr (NO successively respectively
3)
3Solution 0.0mL, 2.0mL, 4.0mL, 6.0mL, 8.0mL, 10.0mL, obtain standard color range color comparison tube excessive from the rufous to the claret, represent chromic concentration (g/L) successively: 0.00,0.01 * C, 0.02 * C, 0.03 * C, 0.04 * C, 0.05 * C, wherein C is the concentration of electric chrome solution chromic anhybride;
Chromic concentration in certain Electroplate Factory's electric chrome solution is detected, the concentration C of the chromic anhybride of its electric chrome solution is 222.5g/L, it is 9.0mL that calculating needs power taking chromium plating solution V as can be known, pipette in another 25mL color comparison tube, with distilled water diluting to scale, with above-mentioned 1-6 color comparison tube colorimetric, find its color after the colorimetric between between No. 2 and No. 3 color comparison tubes, calculate trivalent chromium concentration in this electric chrome solution between 2.225-4.450g/L.
Claims (2)
1, chromic method in a kind of visual detection electric chrome solution provided by the invention is characterized in that, comprises the steps:
(1) preparation of standard color range color comparison tube: get 6 25mL color comparison tubes, from left to right number consecutivelies; In every color comparison tube, add 500g/L chromic anhybride solution 4.0mL respectively; From left to right add 46g/L Cr (NO successively respectively
3)
3Solution 0.0mL, 2.0mL, 4.0mL, 6.0mL, 8.0mL, 10.0mL, obtain standard color range color comparison tube from rufous to the claret transition, represent chromic concentration successively: 0.00,0.01 * C, 0.02 * C, 0.03 * C, 0.04 * C, 0.05 * C, wherein C is the concentration of electric chrome solution chromic anhybride, and unit is g/L;
(2) according to the concentration C of chromic anhybride in the electric chrome solution, by formula V=2000/C determines the volume amount of the getting V of plating bath, and unit is mL;
(3) with the electric chrome solution of pipette, extract V volume, put into another 25mL color comparison tube, adding distil water is diluted to scale, fully after the vibration evenly, with standard color range color comparison tube colorimetric, calculates and determines chromic concentration or concentration range in the electric chrome solution.
2, chromic device in a kind of visual detection electric chrome solution, it is characterized in that, comprise standard color range color comparison tube, Colorimetric cylinder holder and sample color comparison tube, described standard color range color comparison tube makes by following method: get 6 25mL color comparison tubes, from left to right number consecutivelies; In every color comparison tube, add 500g/L chromic anhybride solution 4.0mL respectively; From left to right add 46g/L Cr (NO successively respectively
3)
3Solution 0.0mL, 2.0mL, 4.0mL, 6.0mL, 8.0mL, 10.0mL, obtain standard color range color comparison tube from rufous to the claret transition, represent chromic concentration successively: 0.00,0.01 * C, 0.02 * C, 0.03 * C, 0.04 * C, 0.05 * C, wherein C is the concentration of electric chrome solution chromic anhybride, and unit is g/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200710061736XA CN100567968C (en) | 2007-04-20 | 2007-04-20 | Chromic method and device thereof in a kind of visual detection electric chrome solution |
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| CNB200710061736XA CN100567968C (en) | 2007-04-20 | 2007-04-20 | Chromic method and device thereof in a kind of visual detection electric chrome solution |
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| CN101042352A CN101042352A (en) | 2007-09-26 |
| CN100567968C true CN100567968C (en) | 2009-12-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108572235B (en) * | 2017-03-08 | 2020-10-23 | 上海梅山钢铁股份有限公司 | Method for detecting chromium content in chromium passivation waste liquid |
| CN106970032B (en) * | 2017-03-13 | 2019-06-28 | 山西大学 | A kind of preparation method and application visualizing gold nanoparticle probe |
| CN108627505B (en) * | 2017-03-24 | 2019-06-11 | 武汉大学 | A kind of nanogold colorimetric method of quickly detection chromium (III) ion |
| CN109870407A (en) * | 2017-12-01 | 2019-06-11 | 中粮集团有限公司 | The comparison device of turbidity and application thereof for judging rice washing water |
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Non-Patent Citations (2)
| Title |
|---|
| 镀铬溶液中六价铬和三价铬的快速测定. 郭崇武等.电镀与精饰，第28卷第4期. 2006 |
| 镀铬溶液中六价铬和三价铬的快速测定. 郭崇武等.电镀与精饰，第28卷第4期. 2006 * |
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Inventor after: Dong Chuan Inventor after: Guo Yujing Inventor after: Qiao Jie Inventor after: Ren Yongjun Inventor after: Shuang Shaomin Inventor before: Qiao Jie Inventor before: Ren Yongjun Inventor before: Shuang Shaomin Inventor before: Dong Chuan |
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Free format text: CORRECT: INVENTOR; FROM: QIAO JIE REN YONGJUN SHUANG SHAOMIN DONG CHUAN TO: DONG CHUAN GUO YUJING QIAO JIE REN YONGJUN SHUANG SHAOMIN |
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Granted publication date: 20091209 Termination date: 20130420 |