水中通氧对狐尾藻生长及镉吸附的影响

对狐尾藻进行了加氧与不加氧对照处理,比较了它们在不同镉离子浓度水体中的生长状况。通过检测水体中的镉离子浓度值,研究了狐尾藻对镉离子的吸附能力及其对镉离子的富集系数,采用WinRHIZO软件对狐尾藻的根系生长进行了分析,结果表明：在2种处理方式下,狐尾藻在镉离子浓度小于5 mg/L时均能正常生长,且加氧处理可显著提高其对镉离子的吸附能力;狐尾藻在镉离子浓度大于10 mg/L时均受镉离子胁迫作用导致叶片枯萎,且加氧处理可显著加快其对镉离子的吸附速度;狐尾藻在不同镉离子浓度下其最高富集系数为试验设置的20 mg/L,而加氧处理可将最高富集系数提高13.35%。由此可知,加氧处理可促进狐尾藻根系生长,...

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Bibliographic Details
Published in江西农业学报 Vol. 28; no. 6; pp. 100 - 104
Main Author 黄晓波 姚帮松 张立成 阮三桂 蒋鹏 程峰 沈维
Format Journal Article
LanguageChinese
Published 湖南农业大学工学院,湖南长沙,410128%湖南农业大学工学院,湖南长沙410128 2016
湖南农业大学资源环境学院,湖南长沙410128%湖南农业大学资源环境学院,湖南长沙,410128
Subjects
加氧处理
富集系数
狐尾藻
镉污染
Myriophyllum
Bioaccumulation factor
Cadmium pollution
镉污染
狐尾藻
加氧处理
Oxygenation
富集系数
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ISSN1001-8581
DOI10.19386/j.cnki.jxnyxb.2016.06.21

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Summary:对狐尾藻进行了加氧与不加氧对照处理,比较了它们在不同镉离子浓度水体中的生长状况。通过检测水体中的镉离子浓度值,研究了狐尾藻对镉离子的吸附能力及其对镉离子的富集系数,采用WinRHIZO软件对狐尾藻的根系生长进行了分析,结果表明：在2种处理方式下,狐尾藻在镉离子浓度小于5 mg/L时均能正常生长,且加氧处理可显著提高其对镉离子的吸附能力;狐尾藻在镉离子浓度大于10 mg/L时均受镉离子胁迫作用导致叶片枯萎,且加氧处理可显著加快其对镉离子的吸附速度;狐尾藻在不同镉离子浓度下其最高富集系数为试验设置的20 mg/L,而加氧处理可将最高富集系数提高13.35%。由此可知,加氧处理可促进狐尾藻根系生长,增强了狐尾藻对镉离子的吸附能力,进一步提高了狐尾藻对镉污染水体的净化能力。
Bibliography:36-1124/S
Compared the Myriophyllum growth in the water containing different concentrations of cadmium by the oxygen and without oxygen treatment,studied the Myriophyllum adsorption capacity of cadmium and its bioaccumulation factor of cadmium,analyzed the root growth of Myriophyllum by WinRHIZO software. The results showed that within the two treatments the Myriophyllum could grow normally in cadmium concentration below 5 mg / L,the adsorption of cadmium was significantly increased with the increase of oxygen treatment. Leaf blight of Myriophyllum under cadmium stress when the concentration was more than 10 mg / L,and in this concentration,the oxygen treatment could accelerate the adsorption rate of cadmium. The bioaccumulation factor of Myriophyllum was variety in different cadmium concentrations,the highest value was 20 mg / L,while the oxygenated treatment could improve 13.35% of bioaccumulation factor of Myriophyllum. Accordingly,adding oxygen treatment could promote Myriophyllum root growth,enhance the a
ISSN:1001-8581
DOI:10.19386/j.cnki.jxnyxb.2016.06.21