【作者】 葛兴； 谭永强； 周小虹；

【Author】 Ge Xing (Beijing Agriculture College 102208) Tan Yongqiang Zhou Xiaohong (Petroleum University,Beijing 102200)

【机构】 北京农学院； 石油大学(北京)；

【摘要】 <正>多菌灵是一种高效、低毒、内吸式广谱杀菌剂。番茄栽培过程中,普遍使用多菌灵防治病害。为保证上市番茄的质量,需对番茄中多菌灵的残留量进行监测,HPLC法是一种较好的分析方法,但高效液相色谱仪价格昂贵,不宜推广。本文采用P2000型高压泵接C18色谱柱,分离后的组分经流动池与紫外光谱仪连接。此装置设备简单、使用方便,适合在基层推广,可替代高效液相色谱仪对番茄果实中多菌灵的消解状况、动态残留量进行测定。更多还原

【Abstract】 In this paper,a quantitative determination method of carbendazim in tomato is developed,by using the UV-260 spectrophotometer and P2000 HPLC pump based on the HPLC theory.Not only this method is convenient and accurate but also apparatuses were cheaper than HPLC device.After extracting tomato in acetone solvent using ultrasonic wave,and then re-extracting using CH₂Cl₂.the extractive from which CH₂Cl₂ was distilled off was dissolved by methanol and are determined.The detection limit of carbendazim in tomato is about 0.5ug/mL.The carbendazim decrease equation is C=2.567e The half-life of carbendazim is 2.02 days,indicating that the tomato are not edible until at least 11 days after the last spraying insecticide.更多还原