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| 镉在土壤中释放的动力学特征研究 | |
| 引用本文： | 张培强,张一平,宋兆华.镉在土壤中释放的动力学特征研究[J].西北农林科技大学学报(社会科学版),2001,29(1):63-67. |
| 作者姓名： | 张培强 张一平 宋兆华 |
| 作者单位： | 1. 西北农林科技大学 生命科学学院 2. 资源与环境科学院, 3. 华南农业大学 资源与环境学院, |
| 基金项目： | 国家教委博士点基金资助项目(900703) |
| 摘 要： | 采用间歇法研究了镉在不同土壤中释放的动力学特征。结果表明 ,酸性土壤镉释放速率大于石灰性土壤 ;随温度升高 ,石灰性土壤镉平均释放速率下降 ,而酸性土壤镉平均释放速率增加 ;不同温度下土壤镉释放速率 V与时间 t最优模型为 ln V=A+ Bt;不同土壤镉释放量 S与时间 t的较优模型为 ln S=A+ k/ t |
| 关 键 词： | 镉 土壤 释放 动力学 |
| 文章编号： | 1000-2782(2001)01-0063-05 |
| 收稿时间： | 3/6/2000 12:00:00 AM |
| 修稿时间： | 2000年3月8日 |
Study on the characteristics of kinetics of cadmium release in soil |
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| HE Wen xiang,ZHU Ming e,ZHANG Yi ping.Study on the characteristics of kinetics of cadmium release in soil[J].Journal of Northwest Sci-Tech Univ of Agr and,2001,29(1):63-67. | |
| Authors: | HE Wen xiang ZHU Ming e ZHANG Yi ping |
| Institution: | 1 (1 College of Life Science;2 College of Resources and Environment,Northwest Science and Technology University of Agriculture and Forestry,Yangling, Shaanxi 712100,China;3 College of |
| Abstract: | Kinetics of cadmium release characteristics in different soils was studied using the Batch Techniques.The rates of cadmium release from the acid soils were bigger than the calcareous soils.The average rates of cadmium release from the calcareous soils decreased as the temperature increased, but for the acid soils, the rates increased.The optimum model of the rates of cadmium release with the time accorded with ln V=A Bt ;for different soils, the amount of cadmium release with the time accorded with the model ln S=A k/t . |
| Keywords: | cadmium soil release/desorption kinetics |
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