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- W2362881493 abstract "A rapid analytical method based on modified QuEChERS sample preparation and GC-MS for the analysis of 16 polycyclic aromatic hydrocarbons(PAHs) residues in farmland soils has been developed.In order to evaluate farmland soil contamination around Xi'an city,the concentrations of 16 PAHs were determined.Soil samples were treated by saturated methanolic potassium hydroxide solution,and extracted with acetone-hexane(1:1) by ultrasound method.The extract solution was purified by using modified QuEChERs method with anhydrous magnesium sulfate,silica gel and primary secondary amine(PSA).The samples were analyzed by GC-MS with DB-5MS(30 m × 0.25 mm× 0.25 μm) and EI source in selective ion monitoring mode.With the analytical method developed in this study,the detection limits for PAHs ranged from 0.7 μg/kg to 3.2 μg/kg.The recoveries for PAHs varied from 79.8 % to 109.6 % and precisions(RSDs) were lower than 9.4 %.The determination result shows that all the farmland soil samples around Xi'an city contain PAHs,and about 16.7 % of the soil samples pollute slightly." @default.
- W2362881493 created "2016-06-24" @default.
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- W2362881493 date "2012-01-01" @default.
- W2362881493 modified "2023-09-25" @default.
- W2362881493 title "Rapid determination of polycyclic aromatic hydrocarbons in farmland soils by GC-MS coupled with modified QuEChERS" @default.
- W2362881493 hasPublicationYear "2012" @default.
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