双硫腙分光光度法测定水中微量锌方法的改进  

Improvement of spectrophotometry method with dithizone for determination of zinc ions in aqueous

作　　者：俞静[1] 李文秀 王雪枫[1] 黄雪莉[1] 

机构地区：[1]石油天然气精细化工教育部和自治区重点实验室,新疆大学化学化工学院,新疆乌鲁木齐830046

出　　处：《天津化工》2014年第1期36-39,共4页Tianjin Chemical Industry

基　　金：国家自然科学基金资助项目乙酸和乙酸钠对聚硅酸锌絮凝剂结构;性能的影响研究(21067013);石油天然气精细化工重点实验室开放课题项目(XJDX0908-2012-4)

摘　　要：国标GB/T 5750.6-2006《生活饮用水标准检验方法》中双硫腙分光光度法测定水中锌离子的方法复杂、影响因素多,难以操作。通过使用比色管替换分液漏斗,将试样由配制一批改成逐个配制和把双硫腙四氯化碳溶液吸光度值调整为0.400±0.005等方面的改进,能够提高试验的重复性和精度,降低测试操作难度、工作量和成本。The method for determination of zinc ions in aqueous by spectrophotometry Wltll olmlzone were complex and be many influence factors, which in the national standard GB/T 5750.6-2006 《Standard Examination Methods for Drinking Water》. There were some improvements for that method, such as separatory funnel was replaced by colorimeter tube, the preparation of test specimens was changed from batch to one by one and absorbance values of the dithizone carbon tetrachloride solution was scaled to a 0.400±0.005, that the accuracy and repetition of experiment can be increased, at the same time the cost and workload can be decreased.

关 键 词：双硫腙分光光度法 锌离子 比色管 吸光度 

分 类 号：X803.2[环境科学与工程—环境工程]