| 成都经济区农业土壤Cd元素的解吸动力学 |
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| 引用本文： | 黄 艺,倪师军,王沛东,王红军.成都经济区农业土壤Cd元素的解吸动力学[J].地质通报,2012,31(1):97-100. |
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| 作者姓名： | 黄 艺 倪师军 王沛东 王红军 |
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| 作者单位： | 成都理工大学地球化学与核资源勘查系，四川 成都 610059 |
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| 基金项目： | 国家自然科学基金项目《酸雨胁迫下城市表生土壤镉的地球化学相平衡研究》(批准号:40803031);四川省科技计划项目《成都经济区农业土壤含镉体系地球化学热力学研究》(编号:2010HH0012) |
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| 摘 要： | 对不同酸雨条件下水稻土Cd释放的研究发现，吸附态Cd释放的过程可以分为快反应和慢反应2个阶段。采用常见的动力学方程和本文创建的反三角函数方程，对淋滤实验数据进行了拟合。结果表明，反三角函数方程对多种酸雨条件下水稻土吸附态Cd释放过程的拟合度最佳。此外，多项式方程也能较好地描述这一过程。
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| 关 键 词： | 酸雨 水稻土 Cd 动力学方程 成都经济区 |
The desorption of cadmium in paddy soil under different acid rain conditions in Chengdu economic region |
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| HUANG Yi,NI Shi-jun,WANG Pei-dong,WANG Hong-jun.The desorption of cadmium in paddy soil under different acid rain conditions in Chengdu economic region[J].Geologcal Bulletin OF China,2012,31(1):97-100. |
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| Authors: | HUANG Yi NI Shi-jun WANG Pei-dong WANG Hong-jun |
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| Institution: | Department of Geochemistry and Nuclear Source Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China |
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| Abstract: | According to the batch experiments on cadmium releasing behaviors in paddy soil under different acid rain conditions, the releasing process of cadmium absorbed in the soil can be divided into two steps, i.e., the fast reaction and the slow one. Several frequently used dynamics equations and anti-trigonometric function equation established in this paper were adopted to fit the data obtained from the leaching test, respectively. Compared with the frequently used equations, the anti-trigonometric function equation can describe very well the Cd releasing process in paddy soil under the impact of different acid rain conditions, and the polynomial equation is also suitable for describing this process. |
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| Keywords: | acid rain paddy soil cadmium kinetic equation Chengdu economic region |
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