Trace Element Contamination in Tissues of Four Bird Species from the Rift Valley Region, Ethiopia

详细信息    查看全文

• 作者：Yared Beyene Yohannes ; Yoshinori Ikenaka…
• 关键词：Bird ; Tissue ; Trace element ; Ecological risk assessment ; Ethiopian rift valley
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：98
• 期：2
• 页码：172-177
• 全文大小：
• 刊物主题：Pollution, general; Environmental Health; Ecotoxicology; Soil Science & Conservation; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution;
• 出版者：Springer US
• ISSN：1432-0800
• 卷排序：98

文摘

Concentrations of ten trace elements (Hg, As, Cd, Pb, Co, Cr, Cu, Ni, Se and Zn) were determined in different tissues (liver, kidney, muscle, heart and brain) of African sacred ibis (Threskiornis aethiopicus), Hamerkop (Scopus umbretta), marabou stork (Leptoptilos crumeniferus) and great white pelican (Pelecanus onocrotalus) inhabiting the Ethiopian Rift Valley region. There were differences in trace element patterns among the bird species. Significantly (p < 0.05) higher concentrations of Cd (5.53 µg/g dw ± 2.94) in kidney and Hg (0.75 µg/g ww ± 0.30) in liver were observed in the great white pelican compared to the other species, and liver concentrations of these two elements showed positive correlations with trophic level. Concentrations of toxic elements (As, Cd, Pb and Hg) in liver were below their respective toxicological thresholds, indicating that the data may provide baseline information for future studies.