Abstract
부산 연안에서 월동 중 사망한 아비류 3종 25개체의 체내 조직 중 카드윰과 납 축적 레벨을 밝히고 오염 수준을 파악하였다. 카드뮴과 납 농도는 아비, 회색머리아비, 큰회색머리아비 3종간에 종간차가 인정되지 않았다(p>0.05). 조직 중 카드뮴 농도는 0.02<TEX>$\sim$</TEX>18.3<TEX>${\mu}g/g$</TEX>의 범위로 신장에서 가장 높고 뼈에서 가장 낮은 정상적인 조직분포를 보였다. 간 조직 중 카드뮴 농도 (3.45<TEX>$\sim$</TEX>6.34<TEX>${\mu}g/g$</TEX>)는 다른 나라에서 보고된 아비류 농도(ND<TEX>$\sim$</TEX>7.11<TEX>${\mu}g/g$</TEX>)와 비슷하였다. 큰회색머리아비 1개체를 제외한 모든 개체의 신장 조직 중 카드뮴 농도는 비오염수준(<30 <TEX>${\mu}g/g$</TEX>)에 해당하였다. 조직 중 납 농도는 0.03<TEX>$\sim$</TEX>1.49<TEX>${\mu}g/g$</TEX>의 범위로 뼈에서 가장 높고 근육에서 가장 낮은 정상적인 조직분포를 보였다. 간 조직 중 납 농도(0.19<TEX>$\sim$</TEX>1.22<TEX>${\mu}g/g$</TEX>)는 보고된 정상적인 아비류 농도와 비슷하였다. 대부분의 간 조직 중 납 농도는 비오염수준(0.15<TEX>$\sim$</TEX>3.0 <TEX>${\mu}g/g$</TEX>)에 해당되었다. We investigated Cd and Pb accumulation levels in tissues of 25 individuals of three species of loons wintering in coastal areas of Busan, Korea. Their liver, muscle, kidney and bone tissues were analyzed for Cd and Pb concentrations. Significant difference of Cd and Pb concentrations was not found among the three species (p>0.05). Individual Cd values ranged from 0.02 to <TEX>$18.3{\mu}g/g$</TEX>. Cd concentrations were highest in kidney and lowest in bone. Levels (3.45<TEX>$\sim$</TEX>6.34 <TEX>${\mu}g/g$</TEX>) of all the analyzed liver Cd were similar in comparison with those (ND<TEX>$\sim$</TEX>7.11<TEX>${\mu}g/g$</TEX>) reported for the loons in different areas. All but one (Gavia arctica) of kidney Cd levels were lower than the exposed level (>30 <TEX>${\mu}g/g$</TEX>). Individual Pb values ranged from 0.03 to 1.49 <TEX>${\mu}g/g$</TEX>. Pb concentrations were highest in bone and lowest in muscle. Liver Pb levels in this study were similar to those of normal loons reported from different countries. Based on hepatic Pb levels, almost all of the samples were classified as background level (0.15<TEX>$\sim$</TEX>3.0 <TEX>${\mu}g/g$</TEX>).
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