梅梁湾重金属浓度的时空变化
Spatial and temporal variation for Heavy Metal Concentration in the water of Meiliang Bay
对太湖梅梁湾及其南部湖心区水域水体的重金属浓度进行了监测;探讨了重金属元素(Al、Ba、Ca、Co、Cu、Fe、K、Mg、Mn、Na、Ni、Pb、Si、Sr、Zn)的时空变化特征;研究了不同重金属元素在不同季节和区域的浓度变化趋势。结果表明,在整个监测时段,全湖区,Al、Fe、Ba、Sr、K、Na浓度有所增加,增幅分别为193.55%、241.15%、1.91%、0.48%、21.35%、20.88%;而Zn、Co、Cu、Mn、Ni、Ca、Mg、Si浓度则有一定的降低,降幅分别为8.28%、54.55%、43.82%、47.75%、32.34%、5.51%、9.35%、70.41%;Pb的浓度基本保持恒定。除Ni、Pb外,水体中各个重金属元素的平均浓度均达到了生活饮用水标准。在全年的不同季节,Na元素的全湖区平均浓度值最高,而Co和Mn的全湖区平均浓度值最小。参照有关标准进行了水体重金属污染评价,结果表明,太湖水质较好,水体中基本上不存在有毒重金属生态污染风险。
In this paper, it has been measured that the concentration of heavy metal elements, include of Al, Ba, Ca, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Si, Sr, and Zn, at Meiliang Bay and his southern water area, Lake Taihu, in the period from October 2003 to August 2005. The results show that the average concentrations of Al, Fe, Ba, Sr, K, and Na increased while, Zn, Co, Cu, Mn, Ni, Ca, Mg, and Si decreased in the observation period. The increase and decrease percent ranges were 193.55%, 241.15%, 1.91%, 0.48%, 21.35%, 20.88%, 8.28%, 54.55%, 43.82%, 47.75%, 32.34%, 5.51%, 9.35% and 70.41% respectively. Meanwhile, the concentration of Pb were showed relatively stable and no obvious variation. The average concentrations of heavy metal elements had essentially lower than the standard values for drinking water of living except for Ni, Pb. The concentration value of Na were taken the maximum while Co, Mn were taken the minimum in different seasons and water areas at the investigated regions. Through the compare method with the standard of heavy metals critical value, the evaluation results show that the water quality is nice enough and there was no ecological pollution hazard of poisonous heavy metal in the water body of Lake Taihu, basically.
成小英、张光生、李聪聪
环境污染、环境污染防治
水体环境学太湖重金属时空变化水质
Environment Study of Water BodyLake TaihuHeavy metalsSpatial and temporal variationWater quality
成小英,张光生,李聪聪.梅梁湾重金属浓度的时空变化[EB/OL].(2010-12-24)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201012-995.点此复制
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