【作者】 田勇；

【导师】 冯辉；

【作者基本信息】 华北电力大学（河北） ， 环境工程， 2003， 硕士

【摘要】 本文分两部分内容：1、建立了毛细管气相色谱法测定茶叶中敌敌畏、乐果、辛硫磷、杀螟硫磷、马拉硫磷和亚胺硫磷六种有机磷农药残留的新方法。研究了仪器的工作条件及预处理过程中溶剂、提取方式、洗脱剂和浓缩方法对测定方法灵敏度、检出限、回收率的影响，并且利用本方法对20种市售茶叶进行了检测，得到满意结果。该法回收率范围为83.1%～98.8%，相对标准偏差1.7%～3.3%，检测限1.6×10^-13～6.0×10^-14g/s。2、利用氢化物原子荧光光度法测定一次性可降解餐饮具中微量砷，探讨了仪器的工作条件，方法的检出限为0.068ng·ml^—1，砷浓度在0～200ng·ml^—1范围内呈线性，相关系数为0.9996，相对标准偏差≤4.9，回收率范围88.4%～99.2%。更多还原

【Abstract】 The article has two parts. Firstly，a capillary gas chromatography is found to analyze organic phosphorus pesticide multifarious remains in tea, wich is dichlorvos, phoxim, dimethoate, fenitrothion, malathion and phosmet. Research the optimum conditions and the optimum project of pretreatment, do elective examinations for the market tea. Recoveries obtained are in the range of 83.1% to 98.8%. The relative standard deviations are in the range of 1.7% to 3.3%. And their detection limits are found in the rage of 1.6×10^-13g/s to 6.0×10^-14g/s. Secondly, it is reported that the HG-AFS determination of arsenic is used in single use and degradable lunch contaainer and drinking set wich pretreated by migration. Choose the optimum conditions, there is a linear relationship between the fluorescence intensity and arsenic concentration in the range of 0 to 200 ng·ml^-1, and its detection limit is found to be 0.068ng·ml^-1. Recoveries obtained by the standard addition method are in the range of 88.4% to 99.2%. This method had been largely applied and results were obtained.Tian Yong（environmental engineering） Directed by prof. Feng Hui更多还原