影响电位滴定法测定石油产品溴值准确度的原因及提高方法  

Increase the bromine value accuracy of petroleum products by potentiometric titration

作　　者：沈桃英[1] 马琳[1] 彭永加[1] 蒋乐天[1] 王静丽[1] 

机构地区：[1]中国石油独山子石化公司,独山子833600

出　　处：《分析仪器》2012年第3期59-61,共3页Analytical Instrumentation

摘　　要：电位滴定法测定石油产品的溴值,以死停终点法指示反应终点,在实际操作过程中经常会出现重复性差、准确度低的情况,本文主要从空白实验、滴定参数、终点判定、样品量等方面进行了讨论。以期找出影响准确度的原因,并提出解决办法。Potentiometric titration method for the determination of the bromine value of petroleum products by dead-stop end-point method, indicating the reaction end point, in the actual operation process often appears poor reproducibility, low accuracy of the situation, this article mainly from the blank experiment, titration end point judgment, parameters, sample volume and other aspects are discussed. In order to find out the influence of the factor of accuracy, and proposes the practical and feasible measures.

关 键 词：溴值 溴价 溴指数 电位滴定法 死停终点法 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]