Preparation of magnetic zeolitic imidazolate framework-67 composites for the extraction of phthalate esters from environmental water samples
文献类型： 外文期刊
第一作者： Zhang, Qingsong
作者： Zhang, Qingsong;Cao, Xiaolin;Yin, Jungang;Zhang, Ziping;Liu, Guangyang
作者机构：
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： 2020 年 12 卷 40 期
页码：
收录情况： SCI
摘要： In this paper, magnetic ZIF-67 composites were prepared by anin situmethod and utilized in the magnetic solid-phase extraction of phthalate esters. The obtained magnetic ZIF-67 composites were characterized in detail, and the adsorption performance was evaluated. The results showed that ZIF-67 crystals in the composites had a chamfered cubic shape with about 2.0 mu m diameter and Fe(3)O(4)was attached on the surface of ZIF-67. The parameters affecting magnetic solid-phase extraction efficiency were optimized including the adsorption and desorption conditions. Under the optimum conditions, magnetic solid-phase extraction coupled with gas chromatography-mass spectrometry for analyzing seven phthalate esters in environmental water samples was established. All the analytes exhibited good linearity (1-200 ng mL(-1)) with correlation coefficients higher than 0.9950. The relative standard deviations were between 4.3% and 8.9%. The developed method showed high sensitivity and had good potential for analyzing trace phthalate esters in water samples.
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