Abstract:Thirteen groups of samples (overlying water, pore-water and sediment) were collected from Hongfeng Lake, located on Yunnan-Guizhou Plateau in southwestern China, to study the behavior and fate of six heavy metals (Cd, Pb, Cu, Zn, Fe and Mn). The results demonstrate that pollution levels of these metals in overlying water and pore-water share the same order: Fe > Mn > Zn > Pb > Cu > Cd, while metal concentrations in the sediment is slightly different: Fe > Mn > Zn > Cu > Pb > Cd. For a single element among these heavy metals, its concentration in sediment was highest, and then that in pore-water was higher than in overlying water. This phenomenon probably means that the heavy metals in the sediment of the lake may be released from the sediment into the overlying water. Although statistical analysis suggested that there was no significant correlation between the concentrations of these metals occurred in overlying water, pore-water and sediment, there are some correlations between these elements. To present a more insight analysis, principal component analysis was applied to study the pollution source of heavy metals concerned. It was found that only one component (representing 67.7% of total variance) was extracted for concentrations of these elements in sediments and two components for those in pore-water (representing 73.6% and 16.73% of total variance respectively) and overlying water (representing 44.2% and 25.1% of total variance respectively).
田林锋, 胡继伟, 秦樊鑫, 黄先飞, 刘峰, 罗桂林, 金梅. 重金属元素在贵州红枫湖水体中的分布特征[J]. 中国环境科学, 2011, 31(3): 481-489.
TIAN Lin-Feng, HU Ji-Wei, QIN Fan-Xin, HUANG Xian-Fei, LIU Feng, LUO Gui-Lin, JIN Mei. Distribation of heavy metal elements in the water body from Lake Hongfeng. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(3): 481-489.