Citation: ZHANG Jing-Hua, YUAN Wen-Ting, GAO Zhan-Qi, SUN Cheng, YANG Shao-Gui, HE Huan, ZHANG Li-Min. Determination of Chlorinated Polycyclic Aromatic Hydrocarbons in Surface Water by Solid Phase Extraction Coupled with Gas Chromatography-Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(10): 1604-1609. doi: 10.11895/j.issn.0253-3820.181246
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In this work, a solid phase extraction (SPE) coupled with gas chromatography-mass spectrometry (SPE-GC-MS) method was developed for determination of 6 kinds of typical Cl-PAHs in water. The targets in water sample were concentrated by poly-sery HLB SPE cartridge and passed through the cartridge with a bulk sampler at a flow rate of 2 mL/min, and then eluted by 6 mL of n-hexane/dichloromethane (4:1, V/V). The Cl-PAHs were qualified and quantified by GC-MS in selective ion scan monitoring method (SIM). Good linearity was observed in the range of 1 to 1000 ng/mL Cl-PAHs with correlation coefficients of 0.9952-0.9997. The limits of detection and limits of quantification ranged from 0.013 to 0.592 ng/L and 0.051 to 0.257 ng/L, respectively. Spiked recoveries in pure water ranged from 77.8% to 105.4%, with the rlative standard deviations of less than 10%, except 9-ClFlu, with the spiked recoveries ranging from 34.4% to 45.6%. The results indicated that the SPE-GC-MS analytical method established here was sensitive and accurate for determination of Cl-PAHs in surface water samples. Then the method was applied to analyze Cl-PAHs in water samples collected from Nanjing industrial Park and surrounding areas, and it was found that the total concentration of Cl-PAHs was ranging from 23.594 ng/L to 106.374 ng/L.
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