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| 槐叶萍、浮萍、满江红对水体中镉离子的吸收研究 | |
| 引用本文： | 刘俊,杨阿喜,张晓燕,金根娣.槐叶萍、浮萍、满江红对水体中镉离子的吸收研究[J].扬州职业大学学报,2010,14(2):45-47. |
| 作者姓名： | 刘俊 杨阿喜 张晓燕 金根娣 |
| 作者单位： | 1. 扬州职业大学,江苏,扬州,225009 2. 扬州环境资源职业技术学院,江苏,扬州,225127 |
| 摘 要： | 在实验室水培条件下，研究了槐叶萍、满江红、浮萍等水生植物对Cd^2＋的累积吸收能力。用原子吸收分光光度法对三种植物的水培液中Cd^2＋的浓度进行了测定。结果表明Cd^2＋在2～20mg·L^-1的浓度范围内，三种植物对Cd^2＋的累积吸收量随着浓度的增加而增加，槐叶萍累积吸收能力大于满江红，满江红优于浮萍；在40～100mg·L^-1的浓度范围内，三种植物对Cd^2＋的累积吸收量则随着浓度的递增而大幅降低，槐叶萍对Cd^2＋的去除效果较其它两种植物为佳。因此，在治理轻度镉污染水体时，三种植物均是较好的备选植物，而在治理重度镉污染水体时。应首选满江红。 |
| 关 键 词： | Cd^2＋ 污染 槐叶萍 浮萍 满江红 原子吸收分光光度法 |
Study on Ability of Salvinia natans, Lemna minor and Azolla imbricata to Cumulate Cd2+ |
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| LIU Jun,YANG A-xi,ZHANG Xiao-yan,JIN Gen-di.Study on Ability of Salvinia natans, Lemna minor and Azolla imbricata to Cumulate Cd2+[J].Journal of Yangzhou Polytechnic College,2010,14(2):45-47. | |
| Authors: | LIU Jun YANG A-xi ZHANG Xiao-yan JIN Gen-di |
| Institution: | 1. Yangzhou Polytechnic College, Yangzhou 225009, China ; 2. Yangzhou Vocational College of Environment and Resources, Yangzhou 225127, China) |
| Abstract: | In the condition of water planting, the absorptive ability of Salvinia natans, Azolla imbricata and Lemna minor to cumulate Cd^2＋was researched in the lab. The concentration of Cd^2 ＋ in the culture solution was detected by the atomic absorption spectrometry and the cumulating ability of these plants was compared. In the concentration of Cd^2＋ from 2 mg · L^-1 to 20 mg · L^-1, the cumulating ability of the three plants increased with the rise of the concentration of Cd^2＋. The order of the cumulating and absorption of Cd^2＋ was： Salvinia natans 〉 Azolla imbricata 〉 Lernna minor. In the concentration of Cd^2＋ from 40mg · L^-1 to 100 mg · L^-1, the cumulating ability of the three plants decreased with the increase of the concentration of Cd^2＋. Therefore, these three plants are all good for the treatment of low-grade Cd^2＋ pollution, while Azolla imbrieata is the best choice to deal with the serious pollution of Cd^2＋ . |
| Keywords: | Cd2+ |
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