Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for testing overproof of mercury contained in spot-removing cream

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com