GC-MS (Gas Chromatography-Mass Spectrometer) analysis method for quantitatively analyzing polycyclic aromatic hydrocarbon in aquatic product

A technology for quantitative analysis and polycyclic aromatic hydrocarbons, which is applied in the field of GC/MS analysis for quantitative detection of polycyclic aromatic hydrocarbons in aquatic products. high sex effect

Inactive Publication Date: 2017-08-29
贵阳市环境信息中心
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Problems solved by technology

[0006] Aiming at the problems of complicated pretreatment and poor detection effect of polycyclic aromatic hydrocarbons in complex environments existing in the prior art, the present invention provides a simple operation, less susceptible to magazine interference, accurate detection results, and capable of simultaneously detecting 16 kin

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  • GC-MS (Gas Chromatography-Mass Spectrometer) analysis method for quantitatively analyzing polycyclic aromatic hydrocarbon in aquatic product

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Embodiment

[0027] Quantitative Analysis Method of PAHs in Hairtail Muscle Tissue

[0028] (1) Sample pretreatment: thaw the organism at room temperature, remove fish scales and skin, wash fully with pure water to remove possible impurities, take the back muscle as the analysis object, and then freeze-dry the sample; freeze-dried The samples were ground into powder, weighed, then wrapped with extracted filter paper, placed in a desiccator and refrigerated for later use.

[0029] (2) Soxhlet extraction: first use three organic solvents of acetone, dichloromethane, and n-hexane to rinse the extraction vessel; weigh a certain amount of sample (about 5g), and add the recovery rate indicator (NaP-d 8 , ACE-d 10 , PHEN-d 10 、CHRY-d 12 and PERY-d 12 ), and then Soxhlet extraction with 200mL n-hexane / acetone (1:1, v:v) for 48 hours. Preferably, the extraction vessel is a commercially available Soxhlet extractor; or preferably, the extraction vessel is an extraction vessel composed of a conve...

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Abstract

The invention relates to a polycyclic aromatic hydrocarbonanalytical test method in the field of analytical chemistry, and concretely relates to a gas chromatography-mass spectrometry method applicable to quantitatively analyzing polycyclic aromatic hydrocarbon in an aquatic product. Aiming at a complex matrix of an animal-origin (aquatic product) food rich in fat, protein and macromolecular substances, the method comprises the steps of utilizing gel permeation chromatography for degreasing, then utilizing an aluminium oxide-silica gel compound chromatography purification column for effectively extracting the polycyclic aromatic hydrocarbon, utilizing gas chromatography and mass spectrometry for carrying out quantitative analysis, and building the GC-MS (Gas Chromatography-Mass Spectrometer) analysis method for quantitatively analyzing the polycyclic aromatic hydrocarbon in the aquatic product. Compared with an existing method, the method provided by the invention is higher in target compound recovery rate, beneficial for removing matrix interference, improving detection limit and reducing detection cost, and applicable to aquatic product safety evaluation, and the like.

Description

technical field [0001] The invention relates to a GC-MS analysis method for quantitative analysis of polycyclic aromatic hydrocarbons in aquatic products, in particular to GC / MS analysis for the quantitative detection of polycyclic aromatic hydrocarbons in aquatic products by Soxhlet extraction, gel purification, and alumina-silica gel composite purification method. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are hydrocarbons formed by linking two or more aromatic rings, which belong to typical POPs and are widely distributed in natural environmental media. PAHs are mostly light yellow crystalline substances, not only have high melting point and boiling point, but also high octanol-water partition coefficient; but their vapor pressure and water solubility are low. There are many kinds of PAHs, and more than 400 kinds of monomers and their derivatives have been discovered so far, and most of them have strong carcinogenic, teratogenic, mutagenic and ...

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 张春辉王娅
Owner 贵阳市环境信息中心
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