无吡啶卡尔·费休试剂微库仑法测定石油产品中微量水分的研究  

Studies on Determination of Water in Petroleum by minicoulometric method with Pyridine free Karl Fischer reagent

作　　者：余忠波 

机构地区：[1]长岭炼油化工总厂研究院

出　　处：《分析试验室》1998年第1期60-62,共3页Chinese Journal of Analysis Laboratory

摘　　要：研究了无吡啶卡尔·费休试剂的组成及特性，并建立了利用无吡啶卡尔·费休的微库仑法测定石油产品中水含量的分析方法。方法用二乙醇胺代替吡啶制备成新的卡氏试剂、无臭味、操作方便、分析速度快、灵敏度高、重复性好，其检测下限为１．０μｇ／ｇ，实际样品测定的相对标准偏差小于５％。方法应用于石油产品中水分的测定，结果令人满意。In this paper,the constituent and speciality of pyridine free Karl Fischer reagent have been studied, and a new method for the determination of water in petroleum by minicoulometry with pyridine-free Karl Fischer reagent has been set up.Pyridine has been replaced by diethanola mine in the new reagent. This method is simple, rapid, sensi tive and reproducible. The detection limit is 1.0μg/g, the relative standard deviation is less than 5% in the determin ation of samples. This method was applied to the determination of water in petroleum with satisfactory results

关 键 词：石油产品 水分 微库仑法 卡氏试剂 二乙醇胺 

分 类 号：TE626[石油与天然气工程—油气加工工程]