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Citation: Guosheng Chen, Shaohan Wang, Yuemei Chen, Haozhi Xie, Hua Xiao, Tao Chen, Ludan Yu, Houjin Li, Fang Zhu, Gangfeng Ouyang. 固相微萃取联用气相色谱-质谱法快速分析水中痕量苯系物[J]. University Chemistry, ;2022, 37(5): 211106. doi: 10.3866/PKU.DXHX202111066 shu

固相微萃取联用气相色谱-质谱法快速分析水中痕量苯系物

School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China

Received Date: 24 November 2021

样品前处理是分析检测的关键步骤，传统的样品前处理技术耗时、费力，且易对环境造成二次污染。固相微萃取（Solid phase microextraction，SPME）技术集采样、萃取、浓缩、进样于一体，萃取过程无需有机溶剂，是一种简单、快速、绿色环保的样品前处理技术。本项目采用SPME技术对水中苯系物进行萃取，优化SPME条件，并联用气相色谱-质谱（Gas chromatography-mass spectrometry，GC-MS）分析检测，建立水中苯系物的定量分析方法。实验结果表明，该方法对苯系物包括苯、甲苯、乙苯、二甲苯的检测具备良好的线性范围（均为100-10000 ng·L^-1），且相关系数R²均大于0.9900。此外，该方法的检测限分别低至37.50、16.67、45.45、10.64 ng·L^-1。将建立的方法用于实际水样中苯系物的检测，加标回收率在86.83%-114.8%之间，方法简便、高效，结果令人满意。本实验将先进的SPME技术引入本科教学实验，一方面融入思政元素，帮助学生牢固树立绿色环保理念，另一方面让学生掌握先进的样品前处理技术，感受前沿技术在化学领域带来的革命性创新。
- Solid phase microextraction,
- Gas chromatography-mass spectrometry,
- BTEX,
- Water
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