| 金霉素在粉质黏壤土中的吸附与解吸行为研究 |
| |
| 引用本文： | 丁于辉,胡育筑,陈建秋.金霉素在粉质黏壤土中的吸附与解吸行为研究[J].安徽农业科学,2011,39(15):8979-8982. |
| |
| 作者姓名： | 丁于辉 胡育筑 陈建秋 |
| |
| 作者单位： | 中国药科大学分析化学教研室; |
| |
| 基金项目： | 国家环保公益性行业科研专项(200809016); 江苏省环境工程重点实验室开放基金项目(KF2009008) |
| |
| 摘 要： | 目的]研究金霉素在粉质黏壤土中的吸附与解吸行为,评估其环境风险。方法]采用批平衡试验研究初始浓度分别为10、20、30、40和50 mg/L金霉素在土壤中的吸附-解吸行为。结果]吸附-解吸试验数据能够用Freundlich模型进行很好的拟合（R2=0.980）,并观察到土壤吸附-解吸滞后现象发生,说明部分金霉素能紧密吸附在土壤颗粒上,在解吸过程中没有被解吸,滞后系数H为0.60。计算了有机质引起的自由能的改变,ΔGom=-20.00 kJ/mol,表明吸附是一个自发的过程,为物理吸附。金霉素在粉质黏壤土中的吸附系数为3 070 L/kg。结论]金霉素流动性较低,吸附在土壤上的吸附能力较强。
|
| 关 键 词： | 金霉素 吸附 解吸 滞后系数 吸附自由能 |
Research on the Adsorption and Desorption Behavior of Chlorotetracycline in Silty Clay Loam |
| |
| DING Yu-hui et al.Research on the Adsorption and Desorption Behavior of Chlorotetracycline in Silty Clay Loam[J].Journal of Anhui Agricultural Sciences,2011,39(15):8979-8982. |
| |
| Authors: | DING Yu-hui |
| |
| Institution: | DING Yu-hui et al(Teaching and Research Office of Analytical Chemistry,China Pharmaceutical University,Nanjing,Jiangsu 210009) |
| |
| Abstract: | Objective]The aim was to research the adsorption and desorption behavior of chlorotetracycline in silty clay loam and estimate its environmental risk.Method]The batch balance test was used to research the adsorption-desorption behavior of chlorotetracycline in soil and its initial concn.were set at 10,20,30,40,and 50 mg/L resp.Result]The data from adsorption-desorption experiment could be fitted very well with Freundlich model(R2=0.980).And the adsorption-desorption hysteresis in soil was observed and it... |
| |
| Keywords: | Chlorotetracycline Adsorption Desorption Hysteresis coefficient Free energy of adsorption |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
