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http://dx.doi.org/10.5806/AST.2006.19.3.203

Determination of selenium in milk powder by octopole reaction cell ICP-MS  

Cho, Sung-Eel (KT&G Central Research Institute)
Kim, Mi-Ju (KT&G Central Research Institute)
Kim, Yong-Ha (KT&G Central Research Institute)
Min, Young-Keun (KT&G Central Research Institute)
Kim, Young-Sang (Department of Chemistry, Korea University)
Publication Information
Analytical Science and Technology / v.19, no.3, 2006 , pp. 203-210 More about this Journal
Abstract
The determination of trace selenium in milk powder has been studied by octopole reaction cell(ORC)-ICP-MS. The interferences by polyatomic ions and other concomitant molecular species could be removed remarkably by using $H_2$ as reaction gas in ORC. Compared to the normal mode (no cell gas), the $H_2$ cell gas mode improved the accuracy and precision. The quantitative result was average 102.7% and it was slightly higher than certified standard value of milk powder and the RSD was 7.6%.
Keywords
Octopole Reaction Cell(ORC)-ICP-MS; Selenium; Milk Powder;
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