在线富集进样-火焰原子吸收法测定水中低含量Cu、Pb、Cd  

Determination of Cu, Pb, Cd by flame AAS with on-line Concentration to Atomizer

作　　者：张长寿[1] 苏静[1] 陈鸿林[1] 

机构地区：[1]江苏省靖江市环境监测站

出　　处：《环境监测管理与技术》1999年第1期35-36,共2页The Administration and Technique of Environmental Monitoring

摘　　要：用在线富集进样火焰原子吸收法测定水中低含量Ｃｕ、Ｐｂ、Ｃｄ，富集倍数分别为１２２、１３６和９４倍，相对标准差为１６％、１５％和４６％（ｎ＝１１），检测限（２σ）为１６μｇ／Ｌ、１５μｇ／Ｌ和０１８μｇ／Ｌ。地面水样中加标回收率为９０％～１０６％，９４％～１０３％和１０６％～１１８％。探讨了分析精密度差的原因；改进了富集进样方法。Trace Cu, Pb and Cd were determined by flame AAS with on line concentrator to atomizer. Concentration ratio 122,136 and 94 Standard deviation were 16%,15% and 4 6%(n=11). Detection limit(2σ) were 1 6 μg/L,1 5 μg/L and 0 1 μg/L. Recoveries with surface water samples were 90%～106%,94%～103% and 106%～118%. The paper also discussed the source of poor precision and presented ways of proving concentration.

关 键 词：原子吸收法 低含量 水质监测 金属元素 

分 类 号：X832.02[环境科学与工程—环境工程]