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Method for detecting chlorinated phenols in dyes

A technology of polychlorinated phenol and detection method, applied in the field of analytical chemistry, can solve the problems of incomplete dissolution of solvent dyes, misjudgment of judgment map quantification, difficult to remove impurities of extraction dyes, etc.

Inactive Publication Date: 2019-02-19
江苏德旺数码科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Currently commonly used detection methods are: ISO 17070:2006 "Determination of Pentachlorophenol Content in Leather"; National Standard GB / T 18414.2-2006 "Determination of Chlorophenol in Textiles"; National Standard GB / T24166-2009 "Chlorophenol in Dye Determination of Phenol"; however, the above-mentioned detection method has the following disadvantages: ① The current technology causes quantitative misjudgment of polychlorinated phenol chromatogram integration peaks; ② It is difficult to remove the dye impurities extracted by existing methods; ③ The existing dye The stability of the extraction method is not high and the solvent is not perfect enough to dissolve the dye

Method used

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  • Method for detecting chlorinated phenols in dyes
  • Method for detecting chlorinated phenols in dyes
  • Method for detecting chlorinated phenols in dyes

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Experimental program
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Embodiment

[0085] Select Specimen Description

[0086] The extraction recovery rate in this experiment means that the sample selection is based on disperse dyes, mainly because it is the most difficult to dissolve in solvents and it is the largest type of dyes on the market. Other types of dyes have also been tested by this method, and the extraction effect is not much different from that of disperse dyes. However, other dyes have less impurities and can be adjusted by adding an appropriate dissolving solution according to the situation.

[0087] Sample description

[0088] In this experiment, the background sample, the background sample plus standard sample and the standard sample were considered in three combinations, and each set of data was repeated three times. If it is a general test substance, a solvent sample should be added for each measurement as a possible contamination consideration. as follows:

[0089] Group 1. Background sample: 1138 red (RUBINE XFTB, produced on Octobe...

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Abstract

The invention discloses a method for detecting chlorinated phenols in dyes, comprising the following steps: first, obtaining a liquid phase by mixing a sample of a dye to be tested with acetic anhydride; then adding a sample internal standard after adding a mixed solvent to form a homogeneous solution; and next, performing extraction by adding an aqueous solution of sodium sulfate, and passing thesupernatant obtained by the extraction through a gas chromatography-mass spectrometry after centrifugation and filtration separation to detect the content of the chlorinated phenols. The detection method of the invention can overcome the problem of quantitative misjudgment caused by the connected peaks of the chromatogram integration of dichlorophenol and trichlorophenol.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, in particular to a detection method for polychlorinated phenol in dyes. Background technique [0002] Pentachlorophenol (abbreviation: PCP), the appearance is white flakes or crystalline solid, often contains a molecule of crystal water, a little hot has a strong pungent odor, pentachlorophenol is a common preservative in textiles, leather, wood and other products , It will be transformed into dioxin-like highly toxic substances when burned. Animal experiments have confirmed that PCP is a highly toxic substance that is biologically carcinogenic and will accumulate in the organism, causing irreversible effects. [0003] Tetrachlorophenol is widely used in pesticides, and the International Agency for Research on Cancer (IARC) has also proposed its impact on organisms. Although the impact on the human body is not confirmed, it cannot be ignored. In 2016, OekoTexStandard100, a global g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 苏勇志颜吟龙杨泽辉莫祥银
Owner 江苏德旺数码科技有限公司
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