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.