Abstract:Heavy metals contamination in sediments affects marine ecosystems adversely. The present study analyzed As, Cd, Cr, Cu, Pb and Zn ions in surface sediments and wildfish collected from estuary of Dashentang, Gaoshaling, Haihe, Ziyahe and Nanpaihe in Bohai bay were analyzed. Of six heavy metals, concentration of Zn was the highest (81.55mg/kg), and that of Cd was the lowest (0.28 ± 0.08 mg/kg), and the same trend was also found in the muscle of wildfish where Zn was the highest (96.75±30.98 mg/kg), and Cd was not detectable. The ecological risk of heavy metals in sediments using potential ecological index (RI) was estimated and the RI decreased in the order of Haihe>Ziyahe>Nanpaihe>Dashentang> Gaoshaling. Moreover, the metallothionein concentrations in wildfish from Ziyahe expect for Haihe were the highest, which was consistent to the RI in sediments.
安立会, 郑丙辉, 张雷, 贾宁, 秦延文, 赵兴茹, 贾静. 渤海湾河口沉积物重金属污染及潜在生态风险评价[J]. 中国环境科学, 2010, 30(5): 666-670.
AN Li-Hui, ZHENG Bing-Hui, ZHANG Lei, JIA Ning, QIN Yan-Wen, ZHAO Xing-Ru, JIA Jing. Occurrence of heavy metals in surface sediments from estuaries in Bohai bay and their ecological risk assessment. . CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(5): 666-670.