CN104280386A - Method for rapidly detecting mercury in shampoo - Google Patents
Method for rapidly detecting mercury in shampoo Download PDFInfo
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- CN104280386A CN104280386A CN201410481207.5A CN201410481207A CN104280386A CN 104280386 A CN104280386 A CN 104280386A CN 201410481207 A CN201410481207 A CN 201410481207A CN 104280386 A CN104280386 A CN 104280386A
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Abstract
The invention relates to a method for rapidly detecting mercury in shampoo. The method comprises the following steps: measuring a shampoo sample, adding the shampoo sample into distilled water, simultaneously adding an activating agent in parts by weight, heating the mixture, and uniformly dispersing the mixture by virtue of microwaves to prepare a to-be-detected sample solution; then measuring the to-be-sample solution of the same weight, and adding the two solutions into two colorimetric tubes; adding an acid solution into a first colorimetric tube, stirring the acid solution and the to-be-detected sample solution, adding a sulfur ion reagent after the reaction, and observing the reaction phenomenon; and adding an iodine ion reagent into a second colorimetric tube, stirring the iodine ion reagent and the to-be-detected solution, and observing the reaction phenomenon after the reaction. The activating agent is added into the shampoo sample so as to activate the shampoo sample, and the shampoo sample is dispersed by adopting microwaves, so that mercury in the shampoo sample can be adequately dissolved in the distilled water, and a detection result is accurate.
Description
Technical field
The invention belongs to detection field, be specifically related to the method for quick of mercury in a kind of shampoo.
Background technology
Shampoo is requisite nursing materials during people live.The illegal retailer of part is in order to make profit, not tight to check on to shampoo raw material, or illegal use inferior raw material causes phenomenon mercurous in barreled shampoo to happen occasionally.Heavy metal Hg is a kind of poisonous element, has more serious harm to human body, can cause cutaneous pigmentation, endocrine and nervous system injury etc.Have effect of nti-freckle and whitening in the cosmetics short time of compound containing mercury, in recent years, many illegal manufacturers, for seeking exorbitant profit, illegally add compound containing mercury in cosmetics of being everlasting, constitute great threat to human health.
In Gong Shi China " cosmetics health specification ", the taboo of regulation has material, wherein also specifies that the mercury caused by cosmetics impurity or other reasons must not more than 1mg/kg.At present, in China's " cosmetics health specification ", the detection method of regulation mercury is cold-vapour atomic absorption method, Atomic fluorophotometry etc., these detection method sample pre-treatments are complicated, and for up to 2-5h, a large amount of oxynitrides can be produced in sample pretreatment process, all harm is brought to ring mirror and testing staff.
Existing detection means, need to coordinate large-scale detecting instrument, and testing cost is high, the cycle is long.For this reason, provide a kind of simple to operate, detect the method for quick of mercury in shampoo rapidly, there is the urgent market demand.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the invention provides a kind of method for quick of Mercury In Cosmetics.
Technical scheme of the present invention is as follows:
A method for quick for mercury in shampoo, comprises the following steps:
(1) measure 10 ~ 15ml shampoo sample, add in 100ml distilled water, add the activator of 0.2 ~ 0.5 weight portion simultaneously, heating, microwave is uniformly dispersed, obtained testing sample solution;
(2) testing sample solution getting same component adds in two color comparison tubes;
(3) in first color comparison tube, add acid solution, stir, after reaction 5 ~ 10min, add sulphion reagent, observing response phenomenon;
(4) in second color comparison tube, add iodide ion reagent, stir, observing response phenomenon after reaction 5 ~ 10min.
Preferably, the temperature of the heating described in step (1) is 60 ~ 80 DEG C, and the time of heating is 5 ~ 10min.
Preferably, the activator described in step (1) is selected from one or more in anionic surfactant, zwitterionic surfactant or non-ionic surfactant.
Preferably, described anionic surfactant be selected from odium stearate, lauryl sodium sulfate one or more.
Preferably, described zwitterionic surfactant be selected from lecithin or betaine one or more; Described non-ionic surfactant be selected from tween, sapn one or more.
Preferably, the acid solution described in step (3) is selected from nitric acid or hydrochloric acid, and addition is 1 ~ 3m.
Preferably, described concentration of nitric acid is 0.3-0.8mol/L, and described concentration of hydrochloric acid is 1.5-2.0mol/L.
Preferably, the sulphion reagent described in step (3) is thioacetic acid amine aqueous solution, and concentration is 0.3-0.6mol/L, and addition is 0.5 ~ 1ml.
Preferably, the iodide ion reagent described in step (4) is potassium iodide aqueous solution, and volumetric concentration is 10-20%, and addition is 1 ~ 2ml.
Determination methods, in step (3), in color comparison tube there is grey or black in solution, and in step (4), in color comparison tube, solution occurs that salmon pink precipitates simultaneously, then judge in sample containing mercury.
The present invention compared with prior art, beneficial effect be embodied in following some:
1. the present invention adds activator in shampoo sample, carries out activation process, and adopts microwave to disperse, and makes the mercury in shampoo sample fully dissolve in distilled water, makes testing result more accurate.
2. mercury can react with sulphion and iodide ion, generate coloured novel substance, mercury and sulphion react, and grey, black can appear in solution, and mercury and iodide ion react, solution can occur that salmon pink precipitates, the present invention, according to the characteristic chromogenic reaction of above-mentioned mercury, carries out qualitative detection to the mercury in cosmetics, easy and simple to handle, terminal easily judges, to operating personnel and checkout equipment less demanding.
3. the present invention is before carrying out chromogenic reaction, first adopts acid solution to infiltrate to sample aqueous solution, mercury ion can be made to move to sample surfaces, accelerate the reaction of mercury and iodide ion and sulphion in subsequent operation, Reaction time shorten, also improve being quick on the draw property.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
A method for quick for mercury in shampoo, comprises the following steps:
(1) measure 10ml shampoo sample, add in 100ml distilled water, add the activator odium stearate of 0.2 weight portion simultaneously, heating, the temperature of heating is 60 ~ 80 DEG C, and the time of heating is 5min, and microwave is uniformly dispersed, obtained testing sample solution;
(2) testing sample solution getting same component adds in two color comparison tubes;
(3) in first color comparison tube, add the salpeter solution that 1ml concentration is 0.8mol/L, stir, after reaction 5min, adding 1ml concentration is 0.3mol/L sulphion reagent, observing response phenomenon;
(4) in second color comparison tube, add 1ml concentration is 20% iodide ion reagent, stirs, observing response phenomenon after reaction 5min.
In step (3), in color comparison tube there is grey in solution, and in step (4), in color comparison tube, solution occurs that salmon pink precipitates simultaneously, illustrates in shampoo sample containing mercury.
Embodiment 2
A method for quick for mercury in shampoo, comprises the following steps:
(1) measure 15ml shampoo sample, add in 100ml distilled water, add activator lecithin or the betaine of 0.5 weight portion simultaneously, heating, the temperature of heating is 80 DEG C, and the time of heating is 10min, and microwave is uniformly dispersed, obtained testing sample solution;
(2) testing sample solution getting same component adds in two color comparison tubes;
(3) in first color comparison tube, add the hydrochloric acid solution that 3ml concentration is 2.0mol/L, stir, after reaction 10min, adding 1ml concentration is 0.6mol/L sulphion reagent, observing response phenomenon;
(4) in second color comparison tube, add 2ml concentration is 20% iodide ion reagent, stirs, observing response phenomenon after reaction 10min.
In step (3), in color comparison tube there is grey or black in solution, and in step (4), in color comparison tube, solution colour does not change simultaneously, judges in sample without mercury.
Embodiment 3
A method for quick for mercury in shampoo, comprises the following steps:
(1) measure 12ml shampoo sample, add in 100ml distilled water, add the activator sapn of 0.3 weight portion simultaneously, heating, the temperature of heating is 60 DEG C, and the time of heating is 8min, and microwave is uniformly dispersed, obtained testing sample solution;
(2) testing sample solution getting same component adds in two color comparison tubes;
(3) in first color comparison tube, add the hydrochloric acid solution that 2ml concentration is 1.8mol/L, stir, after reaction 8min, adding 0.7ml concentration is 0.3mol/L sulphion reagent, observing response phenomenon;
(4) in second color comparison tube, add 1.5ml concentration is 15% iodide ion reagent, stirs, observing response phenomenon after reaction 7min.
In step (3), in color comparison tube there is grey or black in solution, and in step (4), in color comparison tube, solution occurs that salmon pink precipitates simultaneously, judges in shampoo sample containing mercury.
Above-described embodiment is only the preferred embodiment of the present invention, and should not be construed as limitation of the invention, and those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. the method for quick of mercury in shampoo, is characterized in that, comprise the following steps:
(1) measure 10 ~ 15ml shampoo sample, add in 100ml distilled water, add the activator of 0.2 ~ 0.5 weight portion simultaneously, heating, microwave is uniformly dispersed, obtained testing sample solution;
(2) testing sample solution getting same component adds in two color comparison tubes;
(3) in first color comparison tube, add acid solution, stir, after reaction 5 ~ 10min, add sulphion reagent, observing response phenomenon;
(4) in second color comparison tube, add iodide ion reagent, stir, observing response phenomenon after reaction 5 ~ 10min.
2. the method for quick of mercury in a kind of shampoo according to claim 1, it is characterized in that, the temperature of the heating described in step (1) is 60 ~ 80 DEG C, and the time of heating is 5 ~ 10min.
3. the method for quick of mercury in a kind of shampoo according to claim 1, is characterized in that, the activator described in step (1) be selected from anionic surfactant, zwitterionic surfactant or non-ionic surfactant one or more.
4. the method for quick of mercury in a kind of shampoo according to claim 3, is characterized in that, described anionic surfactant be selected from odium stearate, lauryl sodium sulfate one or more.
5. the method for quick of mercury in a kind of shampoo according to claim 3, is characterized in that, described zwitterionic surfactant be selected from lecithin or betaine one or more; Described non-ionic surfactant be selected from tween, sapn one or more.
6. the method for quick of mercury in a kind of shampoo according to claim 1, it is characterized in that, the acid solution described in step (3) is selected from nitric acid or hydrochloric acid, and addition is 1 ~ 3ml.
7. the method for quick of mercury in a kind of shampoo according to claim 6, it is characterized in that, described concentration of nitric acid is 0.3-0.8mol/L, and described concentration of hydrochloric acid is 1.5-2.0mol/L.
8. the method for quick of mercury in a kind of shampoo according to claim 1, it is characterized in that, the sulphion reagent described in step (3) is thioacetic acid amine aqueous solution, and concentration is 0.3-0.6mol/L, and addition is 0.5 ~ 1ml.
9. the method for quick of mercury in a kind of shampoo according to claim 1, it is characterized in that, the iodide ion reagent described in step (4) is potassium iodide aqueous solution, and volumetric concentration is 10-20%, and addition is 1 ~ 2ml.
10. the method for quick of mercury in a kind of shampoo according to claim 1, it is characterized in that, in step (3), in color comparison tube there is grey or black in solution, and in step (4), in color comparison tube, solution occurs that salmon pink precipitates simultaneously, then judge in sample containing mercury.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410481207.5A CN104280386A (en) | 2014-09-20 | 2014-09-20 | Method for rapidly detecting mercury in shampoo |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410481207.5A CN104280386A (en) | 2014-09-20 | 2014-09-20 | Method for rapidly detecting mercury in shampoo |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782522A (en) * | 2010-02-09 | 2010-07-21 | 广东省疾病预防控制中心 | Quick detection method of mercury in cosmetics and reagent kit thereof |
| CN102645416A (en) * | 2012-03-27 | 2012-08-22 | 北京林业大学 | Method for rapidly determining anthocyanin content in blueberries |
| CN103616378A (en) * | 2013-11-28 | 2014-03-05 | 中山鼎晟生物科技有限公司 | Method for detecting mercury in cosmetics |
| CN103969362A (en) * | 2014-03-14 | 2014-08-06 | 中国环境科学研究院 | Method for quantitatively detecting FQs(fluroquinolones) in chicken manure |
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- 2014-09-20 CN CN201410481207.5A patent/CN104280386A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782522A (en) * | 2010-02-09 | 2010-07-21 | 广东省疾病预防控制中心 | Quick detection method of mercury in cosmetics and reagent kit thereof |
| CN102645416A (en) * | 2012-03-27 | 2012-08-22 | 北京林业大学 | Method for rapidly determining anthocyanin content in blueberries |
| CN103616378A (en) * | 2013-11-28 | 2014-03-05 | 中山鼎晟生物科技有限公司 | Method for detecting mercury in cosmetics |
| CN103969362A (en) * | 2014-03-14 | 2014-08-06 | 中国环境科学研究院 | Method for quantitatively detecting FQs(fluroquinolones) in chicken manure |
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Application publication date: 20150114 |