中性子放射化分析法による粉乳中の微量元素の定量

羅 俊光, 葉 錫溶

doi:10.3769/radioisotopes.25.4_206

中性子放射化分析法による粉乳中の微量元素の定量

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羅俊光

国立清華大学原子科学研究所
葉錫溶

国立清華大学原子科学研究所

書誌事項

タイトル別名

Determination of Trace Elements in Powdered Milk by Neutron Activation Analysis
チュウセイシホウシャカブンセキホウニヨルフンニュウチュウノビリョウ

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抄録

Eight trace elements (Co, Cu, Zn, As, Cd, Sn, Sb and Hg) in powered milk have been determined simultaneously by neutron activation analysis with chemical group separation. The irradiated samples were digested with a mixture of HNO₃ and H₂O₂ in a reflux system and subjected to the group separation. Then γ-rays from the radioactive products were measured with a Ge (Li) detector coupled with a 4096 channel pulse height analyzer. The powdered milk samples investigated have been found not to contain heavy metal elements over the warning levels. This method has been shown to be useful for simultaneous determination of heavy metals in biological materials.