共 38 条
In situ self-transformation metal into metal-organic framework membrane for solid-phase microextraction of polycyclic aromatic hydrocarbons
被引:47
作者:
Sun, Shutang
[1
,2
]
Huang, Lijin
[1
]
Xiao, Hongyan
[3
]
Shuai, Qin
[1
]
Hu, Shenghong
[4
]
机构:
[1] China Univ Geosci Wuhan, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeomat, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China
[2] China Univ Geosci, Sch Environm Studies, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China
[3] China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
[4] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
来源:
关键词:
Solid phase microextraction;
Metal organic framework membrane;
In situ self-transformation;
Polycyclic aromatic hydrocarbons;
Gas chromatography mass spectrometry;
OF-THE-ART;
POLYCHLORINATED-BIPHENYLS;
GAS-CHROMATOGRAPHY;
ORGANOCHLORINE PESTICIDES;
COATED FIBER;
WATER;
SEPARATION;
GROWTH;
EXTRACTION;
D O I:
10.1016/j.talanta.2019.04.063
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
In this work, a metal-organic framework (MOF) membrane coated copper wire (CW) was prepared as solid-phase microextraction (SPME) materials for extraction of polycyclic aromatic hydrocarbons (PAHs) from water samples. The MOF based SPME fiber was fabricated by a facile and environment-friendly strategy, where the CW acted as both substrate and the copper ion source for MOF membrane growth. Characterization results confirmed that a uniform and dense HKUST-1 membrane was grown on the smooth surface of pristine CW. The effect of extraction parameters (i.e. extraction temperature, extraction time, desorption temperature, desorption time, and salt concentration) were fully optimized. Due to its large surface areas, the MOF membrane coated CW fiber showed good performance with great repeatability (2.6-14%, n = 5), low limits of detection (LODs, 0.12-9.9 ng L-1) and wide linear range (0.01-10 mu g L-1). Moreover, the proposed method was proven to be highly effective for the determination of trace PAHs levels in real environmental water samples where the recoveries of PAHs were in the range of 80.8-114.1%, demonstrating that the as-prepared HKUST-1 membrane coated CW had great potential application in environmental water analysis.
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页码:145 / 151
页数:7
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