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- E-ISSN 2288-8985
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Determination of selenium in milk powder by octopole reaction cell ICP-MS
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.3, pp.203-210
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(2006). Determination of selenium in milk powder by octopole reaction cell ICP-MS. Analytical Science and Technology, 19(3), 203-210.
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Abstract
Octopole reaction cell inductively coupled plasma mass spectrometer (ORC-ICP-MS)를 이용하여 우 유 분말시료 중 극미량의 셀레늄(Se)을 정량하였다. 반응가스로 H2를 사용함으로써 극미량 측정에서 발 생되는 다원자 이온 종들과 공존 원소에 의해 발생되는 분자들의 방해를 현저하게 제거하였다. Normal mode에 비해서 H2 cell gas mode는 정확성과 정밀성을 크게 향상시켰으며, 우유 표준시료의 보증 값에 비해 정량한 결과는 평균 102.7%로 약간 높게 나타났고, 5회 정량한 값에 대한 상대표준편차는 7.6%이었다.
- keywords
- Octopole Reaction Cell(ORC)-ICP-MS, Selenium, Milk Powder
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