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A kind of gas chromatography-mass spectrometry detection method of nonylphenol polyoxyethylene ether in water

A technology of nonylphenol polyoxyethylene ether and gas chromatography, which is applied in the field of detection of water environmental pollutants, can solve the problems of high test cost, inaccurate quantification, and weak separation ability of liquid chromatography columns, and achieve lower detection limits , simple operation and low consumption cost

Inactive Publication Date: 2012-02-01
浙江省质量技术监督检测研究院
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AI Technical Summary

Problems solved by technology

However, the price of liquid chromatography-mass spectrometry is expensive, and the test cost is high, so it is difficult to popularize in China at present; at the same time, due to the weak separation ability of the liquid chromatography column, the test process is easily interfered by impurities and cannot be accurately quantified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Example: Gas Chromatography-Mass Spectrometry Detection of Nonylphenol Polyoxyethylene Ether Concentration in a River Water

[0029] (1) Membrane filtration pre-purification

[0030] Take about 100mL of the sample to be tested, adjust the pH to 6.0-7.0 with 0.1mol / L hydrochloric acid solution or 0.1mol / L NaOH solution (if the pH of the sample is between 6.0-7.0, there is no need to adjust the pH), and then use the pore size 0.45μm filter membrane was vacuum filtered, and 50mL of the filtrate was collected.

[0031] (2) Enrichment by solid phase extraction

[0032] The filtrate was gradually injected into a solid-phase extraction column (LC18-silica gel filler, 200mg / 3mL), the flow rate was controlled at 4mL / min-5mL / min, and the effluent was discarded.

[0033] (3) Elution

[0034] Put the solid phase extraction column in a 25mL centrifuge tube, centrifuge at 4000r / min for 1min to remove the residual water in the column; then use 10mL methanol to elute the column for ...

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Abstract

The invention discloses a gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether in water, which belongs to the technical field of detection of water environmental pollutants, and includes membrane filtration pre-purification, solid phase extraction enrichment and elution, and elution After special chemical treatment, the liquid is extracted with an organic solvent, and then the organic phase is detected by gas chromatography-mass spectrometry, and compared with the standard curve, the concentration of nonylphenol polyoxyethylene ether is quantitatively obtained. The invention has the advantages of simple pretreatment, easy operation, wide linear range, high enrichment multiple, good reproducibility, and accurate qualitative, without using expensive liquid chromatography-mass spectrometer, and can quickly analyze nonylphenol polyoxyethylene ether in water concentration.

Description

【Technical field】 [0001] The invention relates to the technical field of detection of water environmental pollutants, in particular to a gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether (abbreviated as NPEO) in water, especially for reclaimed water and surface water Detection of nonylphenol ethoxylate concentration. 【Background technique】 [0002] Nonylphenol polyoxyethylene ether is a kind of non-ionic surfactant, because of its excellent emulsification, dispersion and decontamination functions, and low cost, it is widely used in textile printing and dyeing, papermaking, leather, petroleum refining, pesticides, resins Modification and industrial and household washing industries. At present, thousands of tons of nonylphenol ethoxylates are used every year in the world, and the used nonylphenol ethoxylates basically completely enter the waste water and finally enter the environmental water body. [0003] A large number of experimen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/08G01N30/72
Inventor 马贺伟
Owner 浙江省质量技术监督检测研究院
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