Determination of Lanthanoids in Shellfish by Inductively Coupled Plasma-Mass Spectrometry
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概要
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Lanthanoid elements in hard tissue (shell and pearl) of shellfish were determined and their distributions were examined by ICP-MS. The ICP-MS signals for lanthanoids contained in these samples were highly suppressed by coexisting calcium, the macro-component, which made the determination of lanthanoids difficult. To resolve this problem, we applied the coprecipitation-separation method with ferric hydroxide to separation of the lanthanoids from the interfering element, calcium. All the lanthanoids were coprecipitated quantitatively and separated at pH9. Pearl and shell samples were dissolved in inorganic acids and filtered, then the 14 lanthanoid elements in the sample solution were simultaneously determined. The lanthanoids contents in hard tissues ranged from 0.25 to 82ppb in Akoya gai of sea water shellfish, and from 0.3 to 72 ppb in the Dcecho gai of Lake Biwa. It was found that the distribution of lanthanoid elements in these samples followed the Oddo and Harkins law.
- 近畿大学の論文
- 1997-03-05
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