硫元素对微库伦法测定石脑油有机氯影响规律及消除办法研究  

Influence of Sulfur on the Determination of Organochlorine in Naphtha by Microcoulomb Method and Study on Elimination Methods

作　　者：张韬 王宗廷[2] 任亚楠 卢建平 张凤梅 温聪颖[2] 卢玉坤[2] Zhang Tao;Wang Zongting;Ren Yanan;Lu Jianping;Zhang Fengmei;Wen Congying;Lu Yukun(Shengli Oil Production Plant,Sinopec Shengli Oilfield Company,Dongying 276800,China;Department of Chemistry,School of Chemistry and Chemical Engineering,China University of Petroleum(East China),Qingdao 266555,China)

机构地区：[1]中国石化胜利油田分公司胜利采油厂,山东东营276800 [2]中国石油大学(华东)化学化工学院化学系,山东青岛266555

出　　处：《山东化工》2023年第20期143-146,共4页Shandong Chemical Industry

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10000,甚至3000,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。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 10000,or even 3000,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.

关 键 词：微库伦法 石脑油有机氯 检测 硫元素影响 消除办法 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]