A NEW ONLINE COPRECIPITATION PRECONCENTRATION TECHNIQUE FOR TRACE-METAL ANALYSIS BY ICP-AES

被引：0
|
作者：
PARK, KH
PAK, YN
机构：
来源：
BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 1995年 / 16卷 / 05期
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In a stream of water sample, trace metal ions are quantitatively coprecipitated with Indium hydroxide and filtered. The filtered precipitate is continuously dissolved in 3 M nitric acid and introduced to ICP directly. The lead, cadmium, and copper are concentrated more than 10-fold and determined with ICP-AES at a sampling frequency of 10/hour. The detection limits are 2.89, 1.43, 0.52 ppb for lead, cadmium, and copper respectively. Recoveries of lead, cadmium, and copper are 98.7, 94.3, and 104.5% respectively. The RSD values for three elements are about 3-5% currently.
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页码：422 / 427
页数：6
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