Preparation of mixed-matrix membranes from metal organic framework (MIL-53) and poly (vinylidene fluoride) for use in determination of sulfonylurea herbicides in aqueous environments by high performance liquid chromatography

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:553

Article

Ma, Jiping¹  Li, Shuang¹  Wu, Gege¹  Wang, Shasha¹  Guo, Xiaotong^2,3,4  Wang, Liyan^2,3,4  Wang, Xiaoyan^2,3  Li, Jinhua^2,3  Chen, Lingxin^2,3,5 

[1] Qingdao Univ Technol, State Local Joint Engn Res Ctr Urban Sewage Treat, Sch Environm & Municipal Engn, Qingdao 266033, Shandong, Peoples R China

[2] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China

[3] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn & Technol, Yantai 264003, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[5] Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China

关键词: Sulfonylurea herbicides (SUs);    Dispersion membrane extraction (DME);    Metal-organic frameworks (MOFs);    Mixed-matrix membrane (MMM);    Aqueous environments;   

DOI  :  10.1016/j.jcis.2019.06.082

来源: Elsevier

【 摘 要 】

Novel mixed-matrix membranes (MMM) were prepared from metal-organic frameworks (MOF) (MIL-53) and poly (vinylidene fluoride) (PVDF), viz MIL-53-PVDF MMM, for the simultaneous dispersion membrane extraction (DME) of seven sulfonylurea herbicides (SUs) in aqueous environments followed by high performance liquid chromatography (HPLC) determination. The MIL-53-PVDF MMM was well characterized and major factors influencing DME performances were systematically investigated including membrane type, MOF dosage, eluent type, solution pH, extraction/elution time and salinity, etc. Under optimal conditions, the MIL-53-PVDF MMM based DME coupled with HPLC exhibited excellent linearity within 0.03-10 mu g L-1 for chlorimuronethyl and 0.01-10 mu g L-1 for other six SUs individual. High enrichment factor of 250 was obtained, as well as low detection limits and quantification limits ranged from 3.75 to 10.30 ng L-1 and 12.49-34.30 ng L-1, respectively. Furthermore, the method attained high recoveries of 77.20-111.00% at three spiking levels of SUs, with relative standard deviations of 1.28-14.67% in tap water, seawater and surface water samples. Additionally, the MMM was readily separated from water and well regenerated, and could keep about 80% recovery after 25 cycles. Compared to that reported extraction materials, the MIL-53-PVDF MMM possessed the advantages of high enrichment ability, excellent reusability, good practicality and easy separation, indicating it was a promising alternative for the enrichment of SUs from aqueous environments. (C) 2019 Elsevier Inc. All rights reserved.

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