Microwave-assisted-demulsification-dispersive liquid-liquid microextraction coupled with gas chromatography-mass spectrometry for the determination of PAHs in water
文献类型： 外文期刊
作者： Wang, Xiajun 1 ; Nie, Jing 1 ; Yu, Guowei 1 ; Wang, Peng 1 ; Li, Zuguang 1 ; Lee, Mawrong 3 ;
作者机构： 1.Zhejiang Univ Technol, Coll Chem Engn, 18 Chaowang Rd, Hangzhou 310014, Zhejiang, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Qual & Stand Agr Prod, Hangzhou 310021, Zhejiang, Peoples R China
3.Natl Chung Hsing Univ, Dept Chem, Taichung 40227, Taiwan
期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）
ISSN： 1759-9660
年卷期： 2018 年 10 卷 42 期
页码：
收录情况： SCI
摘要： In this study, a novel technology of microwave-assisted-demulsification-dispersive liquid-liquid microextraction (MAD-DLLME) was developed for the extraction of polycyclic aromatic hydrocarbons (PAHs) in environmental water samples, which was followed by gas chromatography-mass spectrometry (GC-MS). The key to MAD-DLLME is based on the formation of an emulsion, where target analytes can partition between two phases, and subsequently employing microwave irradiation to achieve phase separation. To the best of our knowledge, it's the first time that microwave-assisted-demulsification has been introduced into sample preparation technology. Under the optimal conditions, the response of the proposed method was found to be linear in the concentration range of 0.05-10.0 g L-1 for most target analytes. The limits of detection for S/N = 3 ranged between 0.3 and 7.1 ng L-1, and relative standard deviations (RSDs) were in the range of 1.1-6.7%. Finally, water samples collected from West Lake and the Qiantang River (Hangzhou, China) were used for verification of the applicability of the developed method, which was demonstrated to be rapid, simple, efficient, reliable, and environmentally friendly.
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