KF库仑法和KF容量滴定法测试液体石油产品水分探讨  

A Discussion about the Determination of Moisture in Liquid Petroleum Prod ucts by Coulometry and Volumetric Titrimetry

作　　者：张伟杰[1] 陈佳 ZHANG Weijie;CHEN Jia(Hangyu life saving equipment Co.,Ltd.,Xiangyang Hubei 441003)

机构地区：[1]航宇救生装备有限公司,湖北襄阳441003

出　　处：《河南科技》2021年第33期101-103,共3页Henan Science and Technology

摘　　要：本文根据KF库仑法与KF容量滴定法测定原理的区别与联系,并通过试验,研究比较两种方法测试液体石油产品不同水分含量的准确度和精密度。试验结果表明:KF容量滴定法适用于水分含量相对较高样品的测量,含水量在500~10000 ppm时具有很高的准确度和精密度;KF库仑法适用于微量或痕量水分含量样品的测量,含水量在10~1000 ppm时具有很高的准确度和精密度。This article has introduced the differences and connections between coulometry and volumetric titrimetry.At the same time,this article has compared the accuracy and precision of moisture in liquid petroleum products by the two methods.The experiment result shows that coulometry is more suitable for the samples with higher moisture content.When the moisture content of the sample is between 500ppm~1000ppm,the result tested by coulometry is more accurate and precise.Volumetric titrimetry is more suitable for the samples with trace amount of moisture.When the moisture content of the sample is between 10ppm~1000ppm,the result tested by volumetric titrimetry is more accurate and precise.

关 键 词：KF库仑法 KF容量滴定法 水分测定 

分 类 号：O661[理学—分析化学]