异烟酸-巴比妥酸分光光度法测定水中总氰化物的探讨  

Discussion on Determination of Total Cyanides in Water by Isonicotinic Acid/Barbituric Acid Spectrophotometry

作　　者：曾嘉[1] 

机构地区：[1]上海市环境监测中心,上海200030

出　　处：《环境监测管理与技术》2012年第3期72-74,共3页The Administration and Technique of Environmental Monitoring

摘　　要：对异烟酸-巴比妥酸分光光度法测定水中总氰化物的试验条件进行了探讨,分析了蒸馏时馏出液体积对结果的影响,明确了显色剂的配制及保存时效等问题。提出样品预蒸馏时可适当减少馏出液的收集体积,测定结果无显著性差异;将氯胺T、异烟酸-巴比妥酸试剂在冰箱中于4℃保存,在正常情况下可稳定使用4周。The test condition was discussed on determination of total cyanide in water by isonicotinic acid/barbituric acid spectrophotometry.Influence factor of distillate liquid volumes during distillation time on the test was analyzed.Preparation of colour-display reagent and store time were identified.It made some suggestion such as reducing distillate quantity collected during distillation at no significant differences of test results,storing solution of chloramine-T and isonicotinic acid-barbituric acid in a refrigerator to keep temperature at 4 ℃,usually which solution could be stable in 4 weeks.

关 键 词：总氰化物 异烟酸-巴比妥酸分光光度法 水质 

分 类 号：O657.32[理学—分析化学]