| 分散液液微萃取-气相色谱/质谱法测定水中多环芳烃 |
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| 引用本文： | 张晓赟,张丽君,张占恩.分散液液微萃取-气相色谱/质谱法测定水中多环芳烃[J].分析科学学报,2012,28(2):192-196. |
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| 作者姓名： | 张晓赟 张丽君 张占恩 |
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| 作者单位： | 1. 苏州科技学院环境科学与工程学院,江苏苏州,215011
2. 苏州科技学院环境科学与工程学院,江苏苏州215011;苏州科技学院江苏省环境科学与工程重点实验室,江苏苏州215011 |
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| 基金项目： | 国家"十一五"重大科技项目子课题，国家自然科学基金 |
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| 摘 要： | 用分散液液微萃取-气相色谱/质谱法测定水样中的16种多环芳烃(PAHs)。通过实验确定最佳萃取条件为:20μL四氯化碳作萃取剂,1.0 mL乙腈作分散剂,超声萃取1 min。在优化条件下,多环芳烃的富集倍数达到216～511,方法在0.05～50μg/L范围内呈良好的线性关系,相关系数(R2)在0.9873～0.9983之间,检出限为0.0020～0.14μg/L。相对标准偏差(RSD)在3.82%～12.45%(n=6)之间。该方法成功用于实际水样中痕量多环芳烃的测定。
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| 关 键 词： | 分散液液微萃取 多环芳烃 水样 气相色谱-质谱法 |
Determination of Polycyclic Aromatic Hydrocarbons in Water Samples by Dispersive Liquid-liquid Microextraction Combined with Gas Chromatography/mass Spectrometry |
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| ZHANG Xiao-yun
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ZHANG Li-jun
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ZHANG Zhan-en.Determination of Polycyclic Aromatic Hydrocarbons in Water Samples by Dispersive Liquid-liquid Microextraction Combined with Gas Chromatography/mass Spectrometry[J].Journal of Analytical Science,2012,28(2):192-196. |
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| Authors: | ZHANG Xiao-yun ZHANG Li-jun ZHANG Zhan-en |
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| Institution: | 1,2(1.Department of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011; 2.Jiangsu Province Key Laboratory of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011) |
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| Abstract: | Dispersive liquid-liquid microextraction(DLLME) combined with gas chromatography-mass spectrometry was used to extract and determine polycyclic aromatic hydrocarbons(PAHs) in water samples.Several parameters in the extraction procedure,such as the extraction and dispersive solvents and their volumes,salinity,extraction time,and shaking mode,were optimized.Under the optimum conditions(20 μL carbon tetrachloride as the extraction solvent,1.0 mL acetonitrile as the dispersive solvent,sonication for 1 min),enrichment factors in the range of 216~511 were achieved.The linearity of the method was from 0.05 to 50 μg/L,with correlation coefficients(R2) varying from 0.9873 to 0.9983.The limits of detection ranged from 0.0020 to 0.14 μg/L.The relative standard deviations at a spike concentration of 20 μg/L were ranged from 3.82% to 12.45%(n=6).The method was successfully used for the determination of PAHs in river water samples. |
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| Keywords: | Dispersive liquid-liquid microextraction Polycyclic aromatic hydrocarbons Water samples Gas chromatography-mass spectrometry |
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