| 季胺盐化合物在水稻土中的吸附与淋溶行为 |
| |
| 引用本文： | 王雄科,向垒,郑美洁,莫测辉,李彦文,赵海明,蔡全英,李慧.季胺盐化合物在水稻土中的吸附与淋溶行为[J].农业环境科学学报,2015,34(6):1115-1120. |
| |
| 作者姓名： | 王雄科 向垒 郑美洁 莫测辉 李彦文 赵海明 蔡全英 李慧 |
| |
| 作者单位： | 暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632;暨南大学生态学系, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632;暨南大学生态学系, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632;暨南大学生态学系, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632,暨南大学环境学院, 环境污染控制与修复材料工程技术研究中心, 广州 510632 |
| |
| 基金项目： | 国家自然科学基金项目(41071211,41173101,41301337);广东省高校高层次人才项目;东莞市科技计划项目(2012108102043) |
| |
| 摘 要： | 通过吸附批处理实验及土柱淋溶实验, 探讨了3种典型季胺盐化合物(QACs)十二烷基三甲基氯化胺(DTAC)、十六烷基三甲基溴化胺(CTAB)及双十二烷基二甲基氯化胺(DDAC)在水稻土中的吸附和淋溶行为。结果表明, QACs(20 mg·L-1)的吸附过程符合拟二级动力学方程(R2>0.995),其有机碳分配系数(Koc)为3056~36 245 mL·g-1,与其分子量及碳链长度显着正相关(P<0.01),即其吸附性能强弱为DDAC>CTAB>DTAC.DDAC和CTAB为易吸附型污染物, DTAC为中等吸附型污染物。中性淋溶条件(pH=7)下, QACs(20 mg·kg-1)难被淋溶, 土柱淋溶率为27%~41%,与其分子量及碳链长度显着负相关(P<0.01);酸性淋溶(pH=4)及去除土壤有机质条件下, QACs的淋溶能力均大幅提高, 土柱淋溶率分别为42%~63%及58%~74%.
|
| 关 键 词： | 季胺盐化合物 吸附 土柱淋溶 水稻土 有机污染物 |
| 收稿时间： | 2015/2/13 0:00:00 |
Sorption and Leaching Behaviors of Quaternary Ammonium Compounds in Paddy Soil |
| |
| WANG Xiong-ke,XIANG Lei,ZHENG Mei-jie,MO Ce-hui,LI Yan-wen,ZHAO Hai-ming,CAI Quan-ying and LI Hui.Sorption and Leaching Behaviors of Quaternary Ammonium Compounds in Paddy Soil[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2015,34(6):1115-1120. |
| |
| Authors: | WANG Xiong-ke XIANG Lei ZHENG Mei-jie MO Ce-hui LI Yan-wen ZHAO Hai-ming CAI Quan-ying and LI Hui |
| |
| Institution: | Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China;Department of Environmental Engineering, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China;Department of Environmental Engineering, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China;Department of Environmental Engineering, Jinan University, Guangzhou 510632, China,Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China and Guangdong Provincial Engineering and Technology Research Center for Environmental Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou 510632, China |
| |
| Abstract: | Sorption and leaching behaviors of three typical quaternary ammonium compounds(QACs), i.e. dodecyl trimethyl ammonium chloride(DTAC), cetyl trimethyl ammonium bromide(CTAB), and didecyl dimethyl ammonium chloride(DDAC), in paddy soil were investigated using batch sorption and soil column leaching experiments. Sorption kinetics of three QACs followed pseudo-second-order kinetics. The organic carbon partition coefficients(Koc) of these QACs, ranging from 3056 mL·g-1 to 36 245 mL·g-1, had significantly positive relationship with their molecular weight and carbon chain lengths, indicating that the sorption of QACs decreased in order of DDAC>CTAB>DTAC. DDAC and CTAB were pollutants with high sorption abilities, while DTAC with moderate sorption ability. In leaching water of pH7, three QACs had low leaching abilities, with leaching rates ranging from 27%~41% and being negatively correlated with their molecular weight and carbon chain lengths. Migration of three QACs(20 mg·kg-1) significantly enhanced in acidic leaching water(pH=4) and organic matter-removed paddy soil, with leaching rates ranging from 42%~63% and 58%~74%, respectively. |
| |
| Keywords: | quaternary ammonium compounds sorption soil column leaching paddy soil organic pollutants |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《农业环境科学学报》浏览原始摘要信息 |
| 点击此处可从《农业环境科学学报》下载免费的PDF全文 |
|
