施磷对土壤中汞、铅吸附特性的影响
陶春军1,2 ,周涛发1,3 ,李湘凌1 ,袁峰1,3 ,陈兴仁2 ,陈永宁2 ,贾十军2 ,陈富荣2
1.合肥工业大学 资源与环境工程学院,安徽 合肥230009;2.安徽省地质调查院,安徽 合肥 230001; 3.中国地质大学 地质过程与矿产资源国家重点实验室,湖北 武汉430074
THE EFFECTS OF APPLYING PHOSPHATEON THE ADSORPTION PROPERTIES OF Hg, Pb IN SOIL
TAO Chun-jun 1,2 , ZHOU Tao-fa 1,3 , LI Xiang-ling 1 , YUAN Feng 1,3 , CHEN Xing-ren 2 , CHEN Yong-ning 2 , JIA Shi-jun 2 , CHEN Fu-rong 2
1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei230009, China; 2.Academy of Geological Survey of Anhui Province, Hefei230001, China; 3.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences, Wuhan430074, China
摘要 以合肥市郊的大兴镇和义城镇地区土壤为主要研究对象,利用批量平衡法初步研究了重金属
在研究区土壤中的等温吸附特征及其吸附热力学特征。外源磷浓度增大提高土壤对重金属Hg、Pb的
吸附能力。在施磷情况下土壤的Hg、Pb吸附自由能均为负值,是常温、常压下可以自发进行的过程
,是物理和化学吸附并存的过程。研究区土壤对Hg、Pb吸附过程均是熵增过程。
Abstract :Soils from two towns of Hefei City in Anhui Province were chosen to investigate the
adsorption properties of heavy metals Hg, Pb under the influence of phosphate acid. Batch
equilibration method was used in this experiment to study the isotherm adsorption and adsorption
thermodynamics characteristics of heavy metals in two typical soils. The results show that phosphate
has effects on the absorption of heavy metals. With increasing phosphate, the Hg, Pb absorption also
increases. The Hg, Pb absorption Gibbs free energies of the two soils are both negative, indicating that
their related chemical processes can take place spontaneously, and that the chemical sorption coexists
with the physical sorption. The absorption of Hg, Pb by the two kinds of soils are governed by positive
adsorption entropy processes.
出版日期: 2010-10-15
基金资助: 国土资源大调查项目(JH2005-3);安徽省优秀青年科技基金(08040106907、
04045063)和“安徽省生态农业地质调查评价方法技术研究与应用”创新团队资助
通讯作者:
陶春军(1982-),男,硕士,安徽省地质调查院,主要从事地球化学方面的研究。
引用本文:
陶春军, 周涛发, 李湘凌, 袁峰, 陈兴仁, 陈永宁, 贾十军, 陈富荣. 施磷对土壤中汞、铅吸附特性的影响 [J]. 物探与化探, 2010, 34(5): 655-658.
DAO Chun-Jun, ZHOU Chao-Fa, LI Xiang-Ling, YUAN Feng, CHEN Xin-Ren, CHEN Yong-Ning, GU Shi-Jun, CHEN Fu-Rong. THE EFFECTS OF APPLYING PHOSPHATEON THE ADSORPTION PROPERTIES OF Hg, Pb IN SOIL. Geophysical and Geochemical Exploration, 2010, 34(5): 655-658.
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