School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, 730070 Lanzhou, China.
Bull Environ Contam Toxicol. 2010 Apr;84(4):482-7. doi: 10.1007/s00128-010-9971-6. Epub 2010 Mar 20.
Characteristics of the spatial and temporal distributions of selected heavy metals (Cu, Zn, Cd, Pb and Hg) in Bohai Bay, north China was examined. Surface sediment samples from 15 sites were collected and analyzed for the selected metals with atomic absorption spectrometry (AAS) from the year of 1997-2007. Mean concentrations of metals in the 11-year period showed that Hg and Zn concentrations slightly fluctuated, while Cu, Cd and Pb concentrations in sediments varied with time. High levels of heavy metals occurred not only along the shoreline but also at some site in the inner part of the bay, suggesting the contamination sources of heavy metals from both terrestrial inputs and the atmospheric deposition. Compared with the environmental background values of selected heavy metals it indicated that anthropogenic activities influenced the sediment quality. The contamination factor C(fi), which is used to evaluate the pollution of the environment, showed that the contamination by selected heavy metals was moderate. Cd, Zn and Pb were the main polluting elements in this area.
研究了中国北部渤海湾地区部分重金属（Cu、Zn、Cd、Pb 和 Hg）时空分布特征。1997 年至 2007 年，采用原子吸收光谱法（AAS）对来自 15 个采样点的表层沉积物样品进行了上述选定金属的分析。在 11 年的时间里，金属的平均浓度表明，Hg 和 Zn 的浓度略有波动，而沉积物中 Cu、Cd 和 Pb 的浓度随时间变化。重金属的高浓度不仅出现在海岸线附近，而且还出现在湾内的一些地点，这表明重金属的污染来源既有陆地输入，也有大气沉降。与选定重金属的环境背景值相比，这表明人为活动影响了沉积物的质量。污染因子 C(fi) 用于评估环境的污染程度，表明所选重金属的污染程度为中等。Cd、Zn 和 Pb 是该地区的主要污染元素。
