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Method for detecting methyl tert-butyl ether content in soil

The application belongs to the technical field of environmental monitoring and analytical chemistry, and discloses a detection method for the content of methyl tert-butyl ether in soil. The method uses surface functionalized mesoporous silica adsorbent for solid phase extraction, combines ultrasonic assisted extraction with gas chromatography-mass spectrometry analysis, the adsorbent has a pore size of 2.5-4.0 nm, and a surface grafted with bifunctional ligands containing tertiary amine groups and short chain alkyl groups, and has high selectivity and adsorption capacity for methyl tert-butyl ether; the mass spectrometry detection adopts double ion confirmation and intensity ratio criterion, effectively eliminating the interference of structural analogues. Through the design of special adsorption materials, the optimization of the pretreatment process and the construction of the mass spectrometry confirmation logic, the application realizes high sensitivity, high selectivity and high reproducibility detection of trace methyl tert-butyl ether, and can be widely applied to industrial pollution site investigation, farmland soil safety evaluation, groundwater pollution tracing and emergency monitoring of environmental incidents.
Owner:天津市地质矿产测试中心