分光光度法测定萃取残液中的微量氯仿  

Spectrophotometric Determination of Trace Chloroform in Extraction Raffinate

作　　者：杨会文[1] 胡熙恩[1] 

机构地区：[1]清华大学核能技术设计研究院,北京102201

出　　处：《石油化工》2003年第1期60-61,共2页Petrochemical Technology

摘　　要：研究了分光光度法检测水体中的微量氯仿,确定了试样的制备和处理方法。氯仿的最大吸收波长为530nm,相关线性范围为0～60mg/L。试样制备过程显色清晰,色差稳定。检测方法简便、快捷、实用,适用于生产过程中的在线检测及水体监测。水中溶解的氯仿经萃取回收后,质量浓度可由6000～7000mg/L降至230～250mg/L,氯仿回收率达96%。Trace chloroform in extraction raffinate produced in chemical industrial processing was determined by spectrophotometric method.A spectrophotometric analysis procedure and a method for preparing and handling sample were developed.The absorption peak of the chloroform-pyridine complex is 530 nm,and the linearity range is 0～60 mg/L.This method has been applied to the process of recovering chloroform from extraction raffinate and to on line detection of water quality.

关 键 词：分光光度法 测定 萃取残液 微量氯仿 水体 分光光度计 回收 

分 类 号：X832[环境科学与工程—环境工程] X830.2