摘要
原位衰减全反射红外光谱用于农药残留动态研究。通过对果蔬(西红柿)表面敌敌畏和乙酰甲胺磷两种农药的原位表征,发现敌敌畏具有显著的挥发性,喷淋20min后降解达80%,同时,表征CO的1 734cm-1吸收峰在20min转为负峰,结合3 073cm-1吸收峰显著减弱,1 277cm-1吸收峰在减弱的同时发生了显著的红移(30cm-1),表明敌敌畏可能存在一定程度的水解;而喷淋乙酰甲胺磷后120min无明显变化,表明乙酰甲胺磷相对稳定。
In-situ attenuated total reflection FTIR （in situ ATR-FTIR） was used for the dynamic research on the residual of pes- ticide. The in-situ characterization of dichlorvos and orthene on the tomatoes＇ surface shows that the dichlorvos has obvious vol- atility and its degradation amount is 80% 20 minutes after spraying. Meanwhile, the ATR-FTIR shows that the strong absorp- tion peak of dichlorvos at I 734 cm 1 turns to negative peaks and the absorption peaks at 3 073 cm-1 significantly abate. The ab- sorption 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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2012年第12期3217-3219,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(30971912)
广州市属高校科技计划项目(10A036)
广东省大学创新实验立项项目
