Determination of organophosphorus pesticides in ecological textiles by solid-phase microextraction with a siloxane-modified polyurethane acrylic resin fiber |
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Authors: | Xianlei Hu Mingqiu ZhangWenhong Ruan Fang Zhu Gangfeng Ouyang |
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Institution: | Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education of China/Materials Science Institue, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China |
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Abstract: | A novel solid-phase microextraction (SPME) fiber coating was prepared with siloxane-modified polyurethane acrylic resin by photo-cured technology. The ratio of two monomers was investigated to obtain good microphase separation structure and better extraction performance. The self-made fiber was then applied to organophosphorus pesticides (OPPs) analysis and several factors, such as extraction/desorption time, extraction temperature, salinity, and pH, were studied. The optimized conditions were: 15 min extraction at 25 °C, 5% Na2SO4 content, pH 7.0 and 4 min desorption in GC inlet. The self-made fiber coating exhibited better extraction efficiency for OPPs, compared with three commercial fiber coatings. Under the optimized conditions, the detection limits of 11 OPPs were from 0.03 μg L−1 to 0.5 μg L−1. Good recoveries and repeatabilities were obtained when the method was used to determine OPPs in ecological textile. |
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Keywords: | Solid-phase microextraction (SPME) Siloxane-modified polyurethane acrylic resin Ecological textile Organophosphorus |
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