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- W3148147397 abstract "A method for the simultaneous extraction,cleanup,determination of 28 polychlorinated biphenyls(PCBs) and 16 polycyclic aromatic hydrocarbons(PAHs) in sediments has been developed by using accelerated solvent extraction(ASE) and solid phase extraction(SPE) cleanup coupled with capillary gas chromatography-triple quadrupole mass spectrometry(GC-QqQ-MS/MS).The conditions of extraction,cleanup,and instrumental operating were optimized.The results indicated that the optimal conditions of ASE were operated at 90 ℃ for 6min;the Silica gel-Florisil composite columns(packing the Florida silica,0.7 g activated silica gel,1 g anhydrous sodium from bottom to top) was chosen as column of purification;the optimal elution solvent was mixture solvent of acetone/hexane(1 ∶ 19,V/V),0.6 mL/min was optimum for elution rate.The correlation coefficients(R2) for PCBs and PAHs were 0.9987-0.9999 and 0.9939-0.9999 in the range of 2-500 μg/L and 5-1000 μg/L,respectively.The limits of detection of PCBs and PAHs were in the range of 0.001-0.08 ng/g,0.07-0.45 ng/g,and the limits of quantitation were 0.003-0.25 ng/g,0.24-1.67 ng/g,respectively.The average recoveries of the spiked samples ranged from 95.6% to 125.7% with RSD(n=6) of 0.7%-6.4% for PCBs,and from 70.4% to 124.7% with RSD(n=6) of 1.1%-12.8% for PAHs.The present method was applied for the determination of PCBs and PAHs in surface sediments collected from the estuaries around Dianchi Lake,and the results displayed that the concentrations of PCB congeners ranged from n.d.to 0.13 ng/g,and 0.79 to 131.12 ng/g for PAHs congeners in this area." @default.
- W3148147397 created "2021-04-13" @default.
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- W3148147397 date "2013-01-01" @default.
- W3148147397 modified "2023-09-25" @default.
- W3148147397 title "Simultaneous Determination of 28 Polychlorinated Biphenyls and 16 Polycyclic Aromatic Hydrocarbons in Sediments Using ASE-SPE-GC-QqQ-MS/MS" @default.
- W3148147397 hasPublicationYear "2013" @default.
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