| 水溶液及红壤提取液中镧的生物毒性研究 |
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| 引用本文： | 褚海燕,李振高,谢祖彬,朱建国,曹志洪.水溶液及红壤提取液中镧的生物毒性研究[J].农业环境科学学报,2001,20(2):69-70. |
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| 作者姓名： | 褚海燕 李振高 谢祖彬 朱建国 曹志洪 |
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| 作者单位： | 中国科学院南京土壤研究所 |
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| 基金项目： | 国家自然科学基金!(29890282)资助项目 |
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| 摘 要： | 利用发光细菌法研究了水溶液及红壤提取液中镧的生物毒性。水溶液中镧有较高的生物毒性并随浓度的升高而增强 ,EC50 值为21.1mg·L-1。土壤提取液中的镧有一定的生物毒性 ,并随镧浓度的升高不断增强。随着培养时间的延长 ,土壤提取液中镧的生物毒性逐渐减小。镧在土壤中的生物毒性是直接的
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| 关 键 词： | 稀土 红壤 镧 发光细菌法 生物毒性 |
| 文章编号： | 1000－0267(2001)02－0069－02 |
| 修稿时间： | 2000年7月2日 |
Biological Toxicity of Lanthanum in Aqueous Solution and Extractable Solution from Red Soil |
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| CHU Hai_yan,LI Zhen_gao,XIE Zu_bin,ZHU Jian_guo,CAO Zhi_hong.Biological Toxicity of Lanthanum in Aqueous Solution and Extractable Solution from Red Soil[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2001,20(2):69-70. |
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| Authors: | CHU Hai_yan LI Zhen_gao XIE Zu_bin ZHU Jian_guo CAO Zhi_hong |
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| Abstract: | The biological toxicity of lanthanum (La) in water solution andextractable solution from red soil both was studied by luminous bacterial method. It has been found that La had strong biological toxicity in water solution, and the toxicity was strengthened with the increasing concentration.EC50 value of La was discovered to be 21.1 mg.L－1. La had biological toxicity in soil extractable solution and the toxicity was strengthened with increasing concentration. When incubation time was prolonged, the biological toxicity of La in soil extractable solution had a tendency to decrease. The biological toxicity of La to soil was direct. |
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| Keywords: | rare earths lanthanum red soil luminous bacteria method biological toxicity |
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