硝酸中微量氯离子测定方法探讨  

Discussion on Test Method for Trace Chloride Ion Determination in Nitric Acid

作　　者：宋学兰[1] 巫倩[1] 李艳[1] 

机构地区：[1]四川泸天化股份有限公司,四川泸州646300

出　　处：《中氮肥》2009年第1期59-63,共5页M-Sized Nitrogenous Fertilizer Progress

摘　　要：进行了莫尔法、佛尔哈德法、硫氰酸汞分光光度法测定实际硝酸样品和标样中微量Cl-含量的对比试验,结果表明:莫尔法不能准确测定硝酸中微量Cl-含量,硫氰酸汞分光光度法和佛尔哈德法能准确测定硝酸中微量Cl-含量。通过试验,还确定了硫氰酸汞分光光度法和佛尔哈德法测定硝酸中微量Cl-含量的条件。Compare tests for trace chloride ion between actual sample and standard sample of nitric acid are conducted through Mohr method, Volhard method and mercuric thiocyanate spectrophotometry. The results show that the trace chloride ion in nitric acid can be determined by both Volhard method and mercuric thiocyanate spectrophotometry, but the result determined by Mohr method is not exact. The condition for chloride ion test by Volhard method and mercuric thiocyanate spectrophotometry is determined through examination.

关 键 词：硝酸 氯离子 莫尔法 佛尔哈德法 硫氰酸汞分光光度法 

分 类 号：TQ111.2[化学工程—无机化工]