| NaCl对Hg在土壤中吸附规律及动力学的影响 |
| |
| 引用本文： | 王艳娇,谭红,杨鸿波,舒海霞,聂积,王天,何锦林.NaCl对Hg在土壤中吸附规律及动力学的影响[J].安徽农业科学,2010(25):13750-13753. |
| |
| 作者姓名： | 王艳娇 谭红 杨鸿波 舒海霞 聂积 王天 何锦林 |
| |
| 作者单位： | 1. 贵州大学化学工程学院,贵州贵阳,550003;贵州省理化测试分析研究中心,贵州贵阳,550002
2. 贵州省理化测试分析研究中心,贵州贵阳,550002 |
| |
| 基金项目： | 中国自然科学基金项目，贵州省科技攻关项目 |
| |
| 摘 要： | 通过等温吸附试验和吸附动力学试验,研究了NaCl对贵州万山、石阡、松桃、德江、江口5个地区道路周边混合土壤中Hg^2＋的吸附解吸行为。结果表明,Hg^2＋在土壤中的吸附行为由于溶液中加入NaCl而有所差异。在同一浓度NaCl作用下,当Hg^2＋浓度小于3.00mg/L时,NaCl对Hg^2＋的吸附有促进作用;当Hg2＋浓度大于3.00mg/L时,NaCl对Hg^2＋的吸附又显示出抑制作用,且随着NaCl浓度的增加抑制作用增强;添加NaCl使Hg2＋最大吸附量最多可降低63.64%。解吸率也因NaCl的加入有所改变。0.01mol/LKNO3溶液对Hg^2＋的解吸率达3.31%～6.78%,而0.01mol/LKNO3＋NaCl溶液对Hg^2＋的解吸率达21.5%～47.3%。吸附动力学试验结果表明,5个动力学方程都拟合得很好,方程的相关系数R^2均在0.9以上,只是吸附过程有所不同。NaCl增大了Hg^2＋在土壤中的流动性,对Hg2＋的迁移转化产生很大的影响。
|
| 关 键 词： | NaCl Hg^2＋ 吸附 解吸 动力学 |
Mercury Adsorption and Kinetics in Soil Influenced by NaCl in De-icing Salt |
| |
| WANG Yan-jiao et al.Mercury Adsorption and Kinetics in Soil Influenced by NaCl in De-icing Salt[J].Journal of Anhui Agricultural Sciences,2010(25):13750-13753. |
| |
| Authors: | WANG Yan-jiao |
| |
| Institution: | WANG Yan-jiao et al (College of Chemical Engineering,Guizhou University,Guiyang,Guizhou 550003) |
| |
| Abstract: | An investigation on the effects of NaCl on adsorption of Hg2+ in Wanshan,Shiqian,Songtao,Dejiang and Jiangkou in Guizhou Province was carried out using isothermal adsorption and kinetic experiment.The results showed that the adsorption behaviour of Hg2+ was different when NaCl was carried into solution.In the mixed soil,NaCl enhanced Hg2+ adsorption obviously when the concentration of Hg2+was lower than 3.00 mg/L.The reduced effect was influenced by different contamination of NaCl.The addition of NaCl made ... |
| |
| Keywords: | NaCl Hg2+ |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
