| 受污藕塘中莲藕对重金属的生物富集特征 |
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| 引用本文： | 胡文勇,马陶武,易浪波,何兴兵.受污藕塘中莲藕对重金属的生物富集特征[J].贵州农业科学,2010,38(3). |
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| 作者姓名： | 胡文勇 马陶武 易浪波 何兴兵 |
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| 作者单位： | 吉首大学,生物资源与环境科学学院,湖南,吉首,416000 |
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| 基金项目： | 国家自然科学基金项目“铜锈环棱螺作为评价淡水层积物毒性效应新型测试生物的研究”(20677021) |
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| 摘 要： | 为了研究莲藕对重金属的生物富集特征,分析了风雨湖藕塘、肖家坪藕塘2个受污藕塘中水、底泥和莲藕各组织中重金属的含量。结果表明,2个藕塘底泥中Pb、Cr、Cd含量都明显高于一级土壤环境质量标准值;莲藕地下茎中重金属含量,除风雨湖中的Zn未超出国家食品标准外,其他金属含量都超出了食品标准。由于风雨湖受有机污染严重,Pb、Cd、Cu在风雨湖藕塘莲藕中的富集系数均高于肖家坪藕塘。通过Pearson相关系数分析,肖家坪藕塘周围土壤和底泥中重金属含量的相关性比风雨湖藕塘显著,而2个藕塘底泥和莲藕地下茎中Pb、Cr、Cu3种重金属含量具有显著的正相关性,Cd和Zn不呈现正相关关系。
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| 关 键 词： | 莲藕 重金属 生物富集 相关性 |
Biological Enrichment Characteristics of Heavy Metals in Lotus Root in Polluted Lotus Ponds |
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| HU Wen-yong,MA Tao-wu,YI Lang-bo,HE Xing-bing.Biological Enrichment Characteristics of Heavy Metals in Lotus Root in Polluted Lotus Ponds[J].Guizhou Agricultural Sciences,2010,38(3). |
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| Authors: | HU Wen-yong MA Tao-wu YI Lang-bo HE Xing-bing |
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| Institution: | College of Biological Resource and Environmental Sciences;Jishou University;Jishou;Hunan 416000;China |
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| Abstract: | Concentration of heavy metals in water,sediment and lotus root tissues were measured by atomic absorption spectrophotometer (AAS) in lotus ponds in Fengyu lake and Xiaojiaping lake to study the biological enrichment characteristics of heavy metals in lotus root. Results showed that the concentration of Pb,Cr and Cd in sediments of both lotus ponds were obviously higher than the first-level soil criterion of environmental qualities. The heavy metals content of lotus rhizome were exceed the food standard exce... |
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| Keywords: | lotus root heavy metals biological enrichment correlation |
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