カキ,イガイ,カサガイ類の重金属含量の固有差〔英文〕

概要

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Multiple discriminant and discriminant analyses were applied to distinguish inherent differences for heavy metal contents among oysters/mussels/limpets and between oysters/mussels, oysters/limpets and mussels/limpets using the concentrations of Zn, Cu, Mn, Cr, Cd and Pb in the soft bodies of the three groups as variates. The properties of the metal contents in limpets and mussels were perfectly distinguished from that in the oysters. The property of the metal contents in oysters was distinguished from that in the mussels ca. 70% and from that in the limpets by 80%; in mussels, from the oysters by 100% and from the limpets by ca. 36%; and in limpets, from the oysters by 100% and from the mussels by ca. 89%. The results on discriminations between the two groups were obtained as follows: the property of the metal contents in the oysters was distinguished from that in the mussels by ca. 75 % with mussel-like character of ca. 25% and from that in the limpets by 80% with limpet-like character of 20%; and the properties of the metal contents between mussels and limpets were clearly separated each other without any mixture. In respective sampling sites, where more than two groups were collected, the properties of the metal contents in the three groups were com-pletely distinguished from one another. The discrimination rates were decreased by the mixtures of the specimens grossly contaminated with heavy metals. The orders of metal concentrations in the three groups were as follows: oysters>mussels>limpets for zinc; oysters>mussels>limpets for copper; mussels=oysters>limpets for manganese; mussels= oysters=limpets for chromium; oysters>mussels=limpets for cadmium; and limpets=mussels>oysters for lead.
日本水産學會の論文

著者

生田國雄
宮崎大学農学部

カキ,イガイ,カサガイ類の重金属含量の固有差〔英文〕

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