Yuan He-Zhong, Shen Ji, Liu En-Feng
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
Huan Jing Ke Xue. 2011 Mar;32(3):649-57.
The concentrations of Zn, Cu, Mn, Cr, Pb, Al, Fe, iron-bound P (Fe-P) and TP in the sediments from Taihu Lake, a eutrophic shallow lake, China, were determined. The results show that the concentrations of heavy metals are higher than those in the earth crust. Particularly, enrichments of Cr and Pb are more conspicuous than other metals. Moreover, the Pb content in all the sample sites increase markedly from bottom to top, which related to the numerous run-off of Pb-containing wastewater and atmospheric precipitation since 1950. Pollution level in Zhushan Bay of heavy metals and phosphorus is much more serious than other lake regions, and heavy metals and phosphorus contents increase rapidly from about 20 cm of the sediment profile upward, which reveal that the Zhushan Bay is a serious sewage discharging area since 1950. Besides, the significant correlation between Fe-P and TP indicates that Fe-P is an important phosphorus form which can release into the overlying water and be ingested by aquatic organism. That is, Fe-P is responsible for the algae bloom in north and northwest region of Taihu Lake.
对中国富营养化浅水湖泊太湖沉积物中的锌、铜、锰、铬、铅、铝、铁、铁结合态磷（Fe-P）和总磷（TP）浓度进行了测定。结果表明，重金属浓度高于地壳中的浓度。特别是，铬和铅的富集比其他金属更为明显。此外，所有采样点的铅含量从底部到顶部显著增加，这与自1950年以来含铅废水的大量径流和大气降水有关。竺山湾重金属和磷的污染程度比其他湖区严重得多，沉积物剖面约20厘米以上重金属和磷含量迅速增加，这表明竺山湾自1950年以来是一个严重的污水排放区。此外，Fe-P与TP之间的显著相关性表明，Fe-P是一种重要的磷形态，可释放到上覆水中并被水生生物摄取。也就是说，Fe-P是太湖北部和西北部藻类水华的原因。
