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| Determination of Low-ring PAHs and Their Derivatives in Groundwater by GC×GC-TOF MS |
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| DOI： |
| KeyWord:Low-ring PAHs derivatives GC×GC-TOF MS groundwater |
| Author | Institution |
| ZHANG Hong-qing,RAO Zhu,WANG Xiao-chun,XU Dan-dan,GU Zi-xin,QIN Kai,GUO Feng,ZHAN Nan |
1.国家地质实验测试中心生态地球化学重点实验室;2.鞍山师范学院化学与生命科学学院;3.中国矿业大学地球科学与测绘工程学院;4.中国地质大学材料与化学学院 |
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| Abstract: |
| A method was developed for the determination of low-ring polycyclic aromatic hydrocarbons(PAHs) and their derivatives in groundwater by liquid-liquid extraction(LLE) followed by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry(GC×GC-TOF MS).Compared with solid phase extraction(SPE),liquid-liquid extraction(LLE) shows higher extraction recoveries for samples, thus LLE was selected as the sample pretreatment method. The optimized results showed that the method has a good linear range of 0.1-1000μg/L with the correlation coefficients(r) higher than 0.99 for most of the targets, except for 1,2,3,4-tetrahydronaphthalene(r=0.9872) and biphenyl(r=0.9899).The spiked recoveries of the targets ranged from 63.3% to 111%with relative standard deviations less than 9.5%(RSD, n=6), except for quinoline(RSD，24.9%),and the detection limits ranged from 1.63ng/L to 14.7ng/L.The method was applied in the determination of low-ring PAHs and their derivatives in real groundwater samples from Hebei province, and the pollutants in two-thirds of samples were detected with the maximum concentration of 353ng/L. |
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