Method for testing overproof of mercury contained in spot-removing cream

A detection method and technology of freckle cream, applied in material excitation analysis, fluorescence/phosphorescence, etc., can solve problems such as complex operation and poor reproducibility of results

Inactive Publication Date: 2008-12-24
SHANGHAI QIBAO HIGH SCHOOL
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Problems solved by technology

The existing national standard method for the detection of mercury ions is cold atomic absorption method, which is complicated to operate, and the reproducibility of the results is poor, and it needs to be measured in a professional laboratory

Method used

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  • Method for testing overproof of mercury contained in spot-removing cream

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Embodiment Construction

[0009] The detection method of the freckle cream of the present invention containing mercury exceeding the standard is as follows: dissolving a little DLZ-1 powder in ethanol to make a DLZ-1 test solution, taking the freckle cream and applying it on filter paper, adding DLZ-1 dropwise For the test solution, put the filter paper under the ultraviolet lamp to irradiate, observe the phenomenon, if there is fluorescence, it means that the aminomercuric chloride exceeds the standard.

[0010] The detection method of the present invention utilizes organic reagents combined with substances with weak fluorescence or no fluorescence to form fluorescent complexes for determination. Many metal cations can interact with certain fluorescent reagents, and fluorescence appears under the irradiation of ultraviolet light. Researchers from East China University of Science and Technology synthesized a fluorescent reagent named DLZ-1, which can detect mercury and its compounds at 2ppm, and has sp...

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Abstract

The invention relates to a detection method for detecting overproof hydrargyrum contained in removing-freckle cream, which is characterized in that a small amount of DLZ-1 powder is dissolved in ethanol so as to prepare a DLZ-1 test solution; the removing-freckle cream is plastered on filter paper and the DLZ-1 test solution dropped on the paper; the filter paper is irradiated under an ultraviolet lamp and the phenomenon is observed; if fluorescence exists, the ammonium chloride based hydrargyrum 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 [0001] The invention belongs to the technical field of cosmetic detection, and in particular relates to a method for detecting excessive mercury content in freckle-removing cream. Background technique [0002] Aminomercuric chloride, the chemical formula is Hg(NH 2 )Cl, commonly known as white mercury, is often illegally added to freckle-removing cosmetics. Because high-concentration mercury-containing cosmetics will cause liver and kidney damage, and even lead to mercury poisoning and uremia. It is very important to measure the mercury content in the freckle cream for this reason. The existing national standard method for mercury ion detection is cold atomic absorption method, which is complicated to operate, the reproducibility of the results is poor, and it needs to be measured in a professional laboratory. Contents of the invention [0003] The object of the present invention is to provide a method for detecting that the freckle-removing cream contain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 黎良枝陆雨薇段李平傅星远
Owner SHANGHAI QIBAO HIGH SCHOOL
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