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Gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether in toilet cleaner

A technology of nonylphenol polyoxyethylene ether and gas chromatography, which is applied in the field of detection and analysis, can solve problems such as difficulty in popularization, inaccurate detection results, expensive liquid chromatography-mass spectrometer, etc., achieve accurate and reliable methods, and reduce interference Effect

Inactive Publication Date: 2013-04-03
国家皮革质量监督检验中心(浙江)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, liquid chromatography-mass spectrometers are expensive and difficult to popularize; at the same time, a large number of additives (such as pigments, active agents, and dispersants) contained in toilet cleaners seriously interfere with the test process, resulting in inaccurate test results

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0023] Example: Gas Chromatography-Mass Spectrometry Detection of Nonylphenol Polyoxyethylene Ether Content in Toilet Cleaner

[0024] (1) Sample dissolution

[0025] Accurately weigh 0.4~0.5g of the mixed sample into a small beaker, mix in about 1g of anhydrous sodium sulfate, add it into a stoppered Erlenmeyer flask, dissolve the sample in the small beaker with 20mL chromatographically pure acetonitrile for 3 times, After the sample liquids are combined, filter them into a 25 mL volumetric flask with a syringe filter with a filter membrane of 0.45 μm, and then dilute to the mark with chromatographically pure acetonitrile.

[0026] (2) Chemical treatment of the extract

[0027] Accurately pipette 10mL of the filtrate, add it to a 50mL flat-bottomed flask, then quickly add 1.5g of cracking agent to the flask, and reflux at a temperature of 90°C for 20-25min.

[0028] (3) Purification

[0029] Take out the flask, first carefully add 5~10 drops of distilled water to the flask...

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Abstract

The invention discloses a gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether in a toilet cleaner, relating to the fields of detection and analysis. The gas chromatography-mass spectrometry detection method comprises the following steps of: dissolving a sample, performing chemical treatment on the sample solution, purifying the sample solution by virtue of a solid-phase extraction column, performing gas chromatography-mass spectrometry detection, and comparing with a standard curve to obtain the concentration value of nonylphenol polyoxyethylene ether. The gas chromatography-mass spectrometry detection method disclosed by the invention is convenient to operate, low in cost, good in reproducibility, accurate in nature determination, and capable of rapidly analysing the content of nonylphenol polyoxyethylene ether in the toilet cleaner without a need of an expensive liquid chromatography-mass spectrometry instrument. Compared with the existing test technologies, the gas chromatography-mass spectrometry detection method disclosed by the invention has no need of an expensive liquid chromatography-mass spectrometry instrument, and is accurate and reliable in result during a process of testing the concentration of nonylphenol polyoxyethylene ether in the toilet cleaner.

Description

【Technical field】 [0001] The invention belongs to the field of detection and analysis, in particular to a gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether (abbreviated as NPEO), especially for the detection of the concentration of nonylphenol polyoxyethylene ether in toilet cleaners. 【Background technique】 [0002] Nonylphenol polyoxyethylene ether is a kind of nonionic surfactant, because of its excellent emulsification, dispersion and decontamination functions, and low cost, it has been widely used in detergents with cleaning functions (such as toilet cleaners) product. At present, thousands of tons of nonylphenol ethoxylates are used every year all over the world. The used nonylphenol polyoxyethylene ether basically completely enters the waste water, and finally enters the environmental water body. [0003] A large number of existing studies have confirmed that nonylphenol polyoxyethylene ethers discharged into environmental wa...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06
Inventor 马贺伟黄新霞
Owner 国家皮革质量监督检验中心(浙江)
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