期刊
MICROCHIMICA ACTA
卷 184, 期 10, 页码 3681-3687出版社
SPRINGER WIEN
DOI: 10.1007/s00604-017-2382-1
关键词
Dispersive solid-phase extraction; High performance liquid chromatography; SEM; Nitrogen adsorption-desorption; Water analysis; Environmental analysis
资金
- Natural Science Foundation of China [21467028, 21327005]
- Program for Chang Jiang Scholars and Innovative Research Team, Ministry of Education, China [IRT1283]
- Key Laboratory of Polymer Materials of Gansu Province
- Key Laboratory of Ecological Environment Related Polymer Materials of Ministry of Education
The authors describe a zinc(II) benzenetricarboxylate (Zn-BTC) based metal-organic framework (MOF) with chrysanthemum-like structure, and its application to the adsorption of pesticides from real water samples. The Zn-BTC MOF was characterized by XRD, TGA, SEM, nitrogen adsorption-desorption analysis and FT-IR spectroscopy. The MOF was used in dispersive solid-phase extraction of six aromatic pesticides from various wastewater samples prior to their quantification by HPLC. Extraction times, extraction temperature, amount of adsorbent, and oscillation rate were optimized. Under the optimal conditions, the method has relative standard deviations (RSDs) of 6.1-10.1%, and good linearity (correlation coefficients higher than 0.9974). The LODs and LOQs for seven pesticides are found to be 0.20-1.60 mu g.L-1 and 0.66-5.28 mu g.L-1, respectively. The RSDs of within batch extraction are 1.6-9.5% and 3.9-12%.
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