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.
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
关键词
总氰化物
异烟酸-巴比妥酸分光光度法
水质
Total cyanide
Isonicotinic acid-barbituric acid spectrophotometry
Water quality
