title: [Characterization of pesticide residual dynamics by in situ attenuated total reflection FTIR].
abstract: In-situ attenuated total reflection FTIR (in situ ATR-FTIR) was used for the dynamic research on the residual of pesticide. The in-situ characterization of dichlorvos and orthene on the tomatoes' surface shows that the dichlorvos has obvious volatility and its degradation amount is 80% 20 minutes after spraying. Meanwhile, the ATR-FTIR shows that the strong absorption peak of dichlorvos at 1 734 cm(-1) turns to negative peaks and the absorption peaks at 3 073 cm(-1) significantly abate. The absorption peaks at 1 277 cm(-1) become weak and red shift (30 cm(-1)) shows that the dichlorvos may be hydrolyzed to some extent. While the absorption peaks of orthene show no change 120 minute after spraying. It shows that the orthene is relatively stable.
authors: Guangzhou Key Laboratory for Functional Studies on Plant Stress-Resistant Genes, School of Life Science, Guangzhou University, Guangzhou 510006, China. yaoyan@gzhu.edu.cn
authors: Yan
authors: Y
authors: Yao
authors: Ping
authors: P
authors: Zhang
authors: Qi-Jie
authors: QJ
authors: Chen
authors: Wen-Feng
authors: WF
authors: Liu
authors: Juan
authors: J
authors: Zeng
authors: Jian-Jun
authors: JJ
authors: Xie
authors: Li-Li
authors: LL
authors: Sun
authors: Xiaro-Lan
authors: XL
authors: Wang
mesh_terms: D004006:Dichlorvos / Q000032:analysis; D018551:Solanum lycopersicum / Q000737:chemistry*; D009946:Organothiophosphorus Compounds / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D063088:Phosphoramides; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013499:Surface Properties; D014835:Volatilization
chemical_list: D009946:Organothiophosphorus Compounds; D010573:Pesticide Residues; D063088:Phosphoramides; C001969:acephate; D004006:Dichlorvos