title: Determination of organophosphorus pesticides in ecological textiles by solid-phase microextraction with a siloxane-modified polyurethane acrylic resin fiber.
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% Na(2)SO(4) 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.
authors: 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.
authors: Xianlei
authors: X
authors: Hu
authors: Mingqiu
authors: M
authors: Zhang
authors: Wenhong
authors: W
authors: Ruan
authors: Fang
authors: F
authors: Zhu
authors: Gangfeng
authors: G
authors: Ouyang
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D032561:Cotton Fiber; D003368:Gossypium / Q000737:chemistry*; D057230:Limit of Detection; D009943:Organophosphorus Compounds / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D011140:Polyurethanes / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry; D052617:Solid Phase Microextraction / Q000379:methods*
chemical_list: D000180:Acrylic Resins; D009943:Organophosphorus Compounds; D010575:Pesticides; D011140:Polyurethanes; D012833:Siloxanes