中文摘要：本文首次使用石墨相氮化碳纳米片作为分散固相萃取吸附剂，并与QuEChERS和液相色谱-串联质谱法联用成功地对土壤、小麦和小麦秸秆复杂基质进行了提纯。农药残留回收率范围为80-110%，基质效应弱，且新型吸附剂用量较少、易识别。在2015年小麦生态系统中进行的野外试验证明了GCN的清洗效果和应用潜力，从回收率、基质匹配校准和农药耗散动力学等方面对比发现，GCN具有替代C18的较大潜力和价值，GCN的使用同时丰富了人们对分散固相萃取吸附剂和样本制备的认识。
外文摘要：Nanosheets of graphitic carbon nitride (GCN) were used as the dispersive solid-phase extraction (d-SPE) sorbent for the first time. GCN successfully purified complex matrices of soil, wheat, and wheat straw utilising a simple QuEChERS (quick, easy, cheap, effective, rugged, and safe) method with liquid chromatography tandem mass spectrometry. Pesticides recoveries in the range of 80-110%, small matrix effect, and decreased amounts guaranteed and distinguished this new sorbent. The application of a real formulation of pesticides under field conditions during 2015 in the wheat ecosystem illustrated the clean-up effect and application potential of GCN. It is a valuable and potential substitute for C18 according to the results comparison between two sorbents, including recoveries, matrix-matched calibration, and dissipation kinetics of pesticides. The new use of GCN also enriched the knowledge of d-SPE and sample preparation furthermore.
外文关键词：Dissipation kinetics, dispersive solid phase extraction, graphitic carbon nitride, herbicides, mass spectrometry, residue analysis
作者：Pang, Nannan; Wang, Tielong; Cui, Yu; Hu, Jiye
作者单位：Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Lab Pesticide Residues & Environm Toxicol, Beijing, Peoples R China.
期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
期刊影响因子：1.411
出版年份：2016
出版刊次：12
点击下载：新型石墨相氮化碳及其作为分散固相萃取吸附剂与液相色谱-串联质谱法联用进行小麦生态系统农药田间评价和耗散动力学研究