【摘要】 重点研究了元素硫对微库伦法测定石脑油中有机氯的影响规律，重点考察了硫氯比的影响规律，研究发现即使硫氯比小于10 000,甚至3 000,其测定相对误差高达5%～25%,且精密度差，没有明显的影响规律。在标准方法所用70%乙酸电解液的基础上，加入银电极动态修饰用T试剂后，误差降低到0%～3%,精密度大幅度提高，有效地解决了元素硫对测定的影响，并对T试剂作用机制进行了分析。更多还原

【Abstract】 This paper focuses on the influence of elemental sulfur on the determination of organochlorine in naphtha by micro-coulomb method, and focuses on the influence of the ratio of sulfur to chlorine.The research found that even if the ratio of sulfur to chlorine is less than 10 000,or even 3 000,the relative error of the determination is as high as 5%～25%,and the precision is poor, and there is no obvious influence rule.On the basis of the 70% acetic acid electrolyte used in the standard method, after adding the T reagent for dynamic modification of the silver electrode, the error is reduced to 0%～3%,and the precision is greatly improved.The mechanism of action of T reagent was also analyzed.更多还原