摘要
建立了镉-氨水.氯化铵缓冲溶液-对偶氮苯重氮氨基偶氮磺酸-甲醛高灵敏度显色体系下,采用流动注射技术测定环境水样中镉的方法,优化了试验条件,讨论了共存离子与色度的影响及消除办法。方法在6.00μg/L^460μg/L范围内线性良好,检出限为0.1μg/L,实际水样测定的加标回收率为98.6%~102%。
A method with high sensitivity system of Cd -NH3·NH4Cl -ADAAS was established to detercadmium in water by flow injection. The test conditions were optimized and the influence of eoexistions with color as well as its removal were discussed. The good linear relation of the method was obtained in range from 6. 00 μg/L to 460 μg/L. The detection limit was 0. 1 μg/L,recoveries of practical samples 98.6% - 102%.
出处
《环境监测管理与技术》
北大核心
2008年第5期33-35,共3页
The Administration and Technique of Environmental Monitoring
关键词
镉
流动注射
分光光度法
水质
Cadmium
Flow injeetion
Spectrophotometry
Water quality
