CN101329277A - Method for testing overproof of mercury contained in spot-removing cream - Google Patents
Method for testing overproof of mercury contained in spot-removing cream Download PDFInfo
- Publication number
- CN101329277A CN101329277A CNA2007100424973A CN200710042497A CN101329277A CN 101329277 A CN101329277 A CN 101329277A CN A2007100424973 A CNA2007100424973 A CN A2007100424973A CN 200710042497 A CN200710042497 A CN 200710042497A CN 101329277 A CN101329277 A CN 101329277A
- Authority
- CN
- China
- Prior art keywords
- cui
- cream
- spot
- solution
- mercury
- 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.)
- Pending
Links
- 239000006071 cream Substances 0.000 title claims abstract description 22
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 title claims abstract description 9
- 229910052753 mercury Inorganic materials 0.000 title claims description 15
- 238000000034 method Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 18
- WRWRKDRWMURIBI-UHFFFAOYSA-M mercuric amidochloride Chemical compound N[Hg]Cl WRWRKDRWMURIBI-UHFFFAOYSA-M 0.000 claims abstract description 15
- 208000003351 Melanosis Diseases 0.000 claims abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 7
- 239000012085 test solution Substances 0.000 claims abstract description 4
- 229960000432 mercuric amidochloride Drugs 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 12
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 9
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical class [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical class [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 239000012047 saturated solution Substances 0.000 claims description 3
- 241000972773 Aulopiformes Species 0.000 abstract 1
- 244000208060 Lawsonia inermis Species 0.000 abstract 1
- 235000019515 salmon Nutrition 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- LWAVGNJLLQSNNN-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-azidobenzoate Chemical compound C1=CC(N=[N+]=[N-])=CC=C1C(=O)ON1C(=O)CCC1=O LWAVGNJLLQSNNN-UHFFFAOYSA-N 0.000 description 1
- 208000037157 Azotemia Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 208000008763 Mercury poisoning Diseases 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical compound N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- PAIKTXYQXFUCKQ-UHFFFAOYSA-N azane mercury Chemical compound N.[Hg] PAIKTXYQXFUCKQ-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- -1 mercury ions Chemical class 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000009852 uremia Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to a detection method for detecting hydrargyrum contained in removing-freckle cream, which is characterized in that a CuI reagent is prepared; a small amount of removing-freckle cream is plastered on filter paper and the CuI test solution dropped on the paper and the phenomenon is observed; if the colour of henna or salmon pink appears, the ammoniated mercuric chloride in the removing-freckle cream severely exceeds the standard. The method of the invention has simple operation and quick detection speed and has low detection condition requirement; the quality legal operation department can complete the detection of the hydrargyrum contained in the removing-freckle cream in site; furthermore, the test result has strong specificity and high exactness.
Description
Technical field
The invention belongs to cosmetics detection technique field, relate in particular to the detection method of mercury contained in spot-removing cream.
Background technology
Ammoniated mercury, chemical formula are Hg (NH
2) Cl, be commonly called as ammoniated mercury, often illegally made an addition in the removing beverage class cosmetics, because the mercury cosmetic of high concentration will cause liver, kidney impaired, even cause mercury poisoning, uremia.The mercury content of for this reason measuring in the content in freckle cream seems very important.Existing mercury ion detecting national standard method is a cold-vapour atomic absorption method, this method complicated operation, and reappearance is relatively poor as a result, and need measure in the laboratory of specialty.
Summary of the invention
Purpose of the present invention is for providing a kind of detection method of mercury contained in spot-removing cream.
In order to realize the foregoing invention purpose, the detection method of mercury contained in spot-removing cream of the present invention adopts following technical scheme:
A kind of detection method of mercury contained in spot-removing cream is characterized in that: prepare CuI reagent, a little content in freckle cream is applied on the filter paper, drip the CuI test solution, observe phenomena has bronzing or orange red appearance, and aminomercuric chloride severe overweight in this content in freckle cream promptly is described.
Being configured to of described CuI reagent splashes into 1 saturated solution of potassium iodide in test tube, 2 of copper/saturated copper sulphate solution, thin up drip three saturated sodium bisulfite solution again to 5ml in test tube.
The detection method of above-mentioned mercury contained in spot-removing cream, one side is simple to operate, detection speed is fast, and low to the testing conditions requirement, quality law enforcement agency can just can finish the detection to mercury contained in spot-removing cream at the scene, and on the other hand, the testing result selectivity is strong, the accuracy rate height.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the molecular structure of aminomercuric chloride.
Embodiment
As shown in Figure 1, ammoniated mercury contains Hg (NH
2)
+The sawtooth chain structure of unit, N-Hg-N is a linear structure.Two H atoms and two Hg atoms around the N atom form tetrahedral structure; Except that two N atoms are arranged, also have four Cl around each Hg atom
-Coordination constitutes the octahedral structure that distorts.Be to put up a bridge between chain and the chain, be in the coordination Cl of bridged bond by shared coordination Cl atom
-Easily ionizable not, and that the N valence bond has reached is saturated, no lone pair electrons, and apparent electropositivity, H
+Can't be near the N atom of positively charged.The ammonia hydrargyrum complex of this structure is a quite stable in non-coordination acid.But if be better than-NH
2Part attack Hg the time (as Br
-, I
-, SCN
-Deng), can make Hg-N join key and weaken, change the solubility complex ion into.
Ammoniated mercury is insoluble in water, alcohol, ether, is soluble in the solution such as hot hydrochloric acid, hot nitric acid, hot acetic acid, hot ammoniacal liquor and cold hartshorn salt and sodium thiosulfate.
Ammoniated mercury indissoluble ammoniacal liquor is because amino molecule has inhibiting effect to the ionic dissociation equilibrium of ammoniated mercury, and under alkali condition, also changes into a small amount of faint yellow HgO, makes the dissolving of precipitation become more difficult.From HSAB principle, Hg
2+Be soft acid, and NH
3Be to compare Cl
-, NO
3 -,-NH
2Harder alkali, replacement are difficult to carry out.But under the situation of being heated, NH
3Have and be beneficial to solubility complex ion Hg (NH
3)
4 2+Formation, therefore, Hg (NH
2) Cl is soluble in hot ammoniacal liquor.
In ammonium salt, a large amount of NH
4 +Existence be favourable to the disassociation of ammoniated mercury, from the angle of ionic dissociation equilibrium, Hg (NH
2) Cl should be easily molten, but in fact ammoniated mercury is insoluble, this and Hg (NH
2) covalency of Cl is more relevant.
At NH
4Cl～NH
3H
2In the buffer solution of O, a large amount of Cl
-Existence be unfavorable for Hg (NH
2) disassociation of Cl, so Hg (NH
2) Cl is insoluble in and contains a large amount of NH
4In the buffer solution of Cl.But containing small amount of N H
4The NH of Cl
3H
2Among the O, though Cl
-Existence be unfavorable for the dissolving that precipitates, but because Cl
-Concentration is less, and influence is little, and small amount of N H
4 +Have and be beneficial to Hg (NH
2)
+Disassociation, a large amount of NH
3Existence help solubility complex ion Hg (NH again
3)
4 2+Formation.Therefore, Hg (NH
2) Cl is soluble in and contains small amount of N H
4 +NH
3Among the H2O.At NH
4NO
3～NH
3H
2Among the O, because of no Cl
-Influence, dissolve easier carrying out.If to Hg (NH
3)
4 2+Settled solution in add an amount of saturated NaCl, separate out Hg (NH again
2) Cl.
Hg (NH
2) Cl is insoluble to H
2SO
4, HNO
3In.In strong acid solution, Hg (NH
2) Cl is not subject to single H
+Attack, this explanation Hg (NH
2)
+Hg and-NH
2Between strong covalent bond be not subject to H
+Destroy.But stronger part and H are arranged
+During coexistence, because of part and H
+To Hg (NH
2)
+Acting in conjunction, make it to be converted into the solubility complex ion.As Hg (NH
2) Cl is soluble in hot hydrochloric acid (K
Surely[HgCl
4 2-]=1.2 * 1015), if the coordination ability of part than Cl
-When stronger, need not H
+Just can make resolution of precipitate.As Hg (NH
2) Cl is soluble in (K in dense NaI, the NaBr solution
Surely[HgBr
4 2-]=1.0 * 1021, K
Surely[HgI
4 2-]=6.8 * 1029).
Therefore, during the detection method of design ammoniated mercury, the reagent of adding can promote Hg (NH as far as possible
2)
+Disassociation, to pass through Hg
2+Characteristic reaction it is qualitatively or quantitatively determined, the method for inspection should be considered sensitivity, considers selectivity again.As, can not use Hg (NH
2) Cl and Na
2The character that S generates black insolubles HgS detects Hg
2 +Whether exceed standard, reason is S
2 -Can form the black insolubles with multiple metallic ion, selectivity is too poor.In addition, to prevent that also illegal manufacturer from by adding the screening agent of some mercury ions, causing Hg (NH
2)
+Disassociation difficulty and can't detect.
Through overtesting relatively, the detection method of mercury contained in spot-removing cream of the present invention adopts CuI solution as detectable, the concrete grammar process is: at first prepare CuI reagent: splash into 1 saturated solution of potassium iodide in the test tube, 2 of copper/saturated copper sulphate solution, thin up is to 5ml, again toward wherein dripping three saturated sodium bisulfite solution.Then a little content in freckle cream is applied on the filter paper, drips the CuI test solution, observe phenomena.Bronzing or orange red appearance are arranged, aminomercuric chloride severe overweight in this content in freckle cream promptly is described.
Wherein, Cu
2+Have oxidisability, with the I-reaction, product is not CuI
2, but the CuI of white.The reaction of preparation CuI is as follows:
2Cu
2++ 4I
-→ 2CuI ↓ (in vain)+I
2
Because CuI energy and I
-Further reaction generates the complex ion [CuI of solubility
2]
-, therefore to note controlling well Cu
2+With I
-Consumption.With Hg (NH
2) the Cl suspension mixes Hg (NH with the CuI of new system
2) the Cl Hg that dissociates out
2+Generate HgI russet immediately with the CuI of new system.This reaction is subjected to the interference of other ion hardly, but must remove a large amount of oxygenants.Because I
2Be stronger oxygenant, and I
2Color can influence Hg (NH
2) mensuration of Cl, can add excessive Na
2SO
3Solution is removed.
The reaction of the CuI detection ammoniated mercury that relates to is as follows:
Hg
2++ CuI → HgI ↓ (bronzing)+Cu
2+
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop on claim scope of the present invention to variation, the modification of the above embodiment.
Claims (2)
1, a kind of detection method of mercury contained in spot-removing cream is characterized in that: prepare CuI reagent, a little content in freckle cream is applied on the filter paper, drip the CuI test solution, observe phenomena has bronzing or orange red appearance, and aminomercuric chloride severe overweight in this content in freckle cream promptly is described.
2, the detection method of mercury contained in spot-removing cream according to claim 1, it is characterized in that: being configured to of described CuI reagent splashes into 1 saturated solution of potassium iodide in test tube, 2 of copper/saturated copper sulphate solution, thin up drip three saturated sodium bisulfite solution again to 5ml in test tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100424973A CN101329277A (en) | 2007-06-22 | 2007-06-22 | Method for testing overproof of mercury contained in spot-removing cream |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100424973A CN101329277A (en) | 2007-06-22 | 2007-06-22 | Method for testing overproof of mercury contained in spot-removing cream |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101329277A true CN101329277A (en) | 2008-12-24 |
Family
ID=40205195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100424973A Pending CN101329277A (en) | 2007-06-22 | 2007-06-22 | Method for testing overproof of mercury contained in spot-removing cream |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101329277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297238A (en) * | 2014-10-18 | 2015-01-21 | 中山鼎晟生物科技有限公司 | Rapid detection method for mercury in lipstick |
| CN106770221A (en) * | 2016-11-21 | 2017-05-31 | 西北矿冶研究院 | Method for determining mercury content in acid-making wastewater enriched by wet method |
-
2007
- 2007-06-22 CN CNA2007100424973A patent/CN101329277A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297238A (en) * | 2014-10-18 | 2015-01-21 | 中山鼎晟生物科技有限公司 | Rapid detection method for mercury in lipstick |
| CN106770221A (en) * | 2016-11-21 | 2017-05-31 | 西北矿冶研究院 | Method for determining mercury content in acid-making wastewater enriched by wet method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |