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| 除草剂苄嘧磺隆在土壤中的吸附 | |
| 引用本文： | 司友斌,周静,王兴祥,周东美.除草剂苄嘧磺隆在土壤中的吸附[J].环境科学,2003,24(3):122-125. |
| 作者姓名： | 司友斌 周静 王兴祥 周东美 |
| 作者单位： | 1. 安徽农业大学环境科技学院,合肥,230036 2. 南京农业大学资源与环境学院,南京,210095 3. 中国科学院南京土壤研究所,南京,210008 |
| 基金项目： | 安徽省自然科学基金重点项目(0 0 0 2 3 0 69),安徽省高等学校青年教师科研项目(2 002jq118),中国科学院红壤生态开放实验站基金资助 |
| 摘 要： | 应用平衡法研究了除草剂苄嘧磺隆在8种土壤中的吸附特性．结果表明,土壤对苄嘧磺隆有很强的吸附性,且随供试土壤理化性质的差异其吸附性呈明显变化．苄嘧磺隆在土壤中的吸附符合Fruendlich方程,其在土壤中的吸附常数Kf与土壤有机质、粘粒含量呈显著正相关(r＝0．7393*和0．7751*,p＜0．05),与土壤pH呈显著负相关(r＝0．7068*,p＜0．05)．苄嘧磺隆在土壤上的吸附自由能为11．45—13．38KJ／mol,表明苄嘧磺隆在土壤中的吸附以物理作用为主。 |
| 关 键 词： | 苄嘧磺隆 吸附 土壤 |
| 文章编号： | 0250-3301(2003)03-04-0122 |
| 收稿时间： | 2002/12/11 0:00:00 |
| 修稿时间： | 2002年12月11 |
Adsorption of Bensulfuron-methyl in Soils |
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| Si Youbin,Zhou Jing,Wang Xingxiang and Zhou Dongmei.Adsorption of Bensulfuron-methyl in Soils[J].Chinese Journal of Environmental Science,2003,24(3):122-125. | |
| Authors: | Si Youbin Zhou Jing Wang Xingxiang and Zhou Dongmei |
| Institution: | College of Environmental Science & Technology, Anhui Agricultural University, Hefei 230036, China. |
| Abstract: | Adsorption of bensulfuron-methyl in eight different soils was studied using the batch equilibration technique. The results showed that soils had strong adsorption of bensulfuron-methyl, which, however, varied with the different properties of the soil tested. The isotherm data were fitted to the Frenundlich equation. The Kf values increased with increasing organic matter and clay content of the soils and decreased with increasing pH. The correlative coefficient between Kf values and organic matter and clay content and pH were 0.7393*, 0.7751*, 0.7068*, p < 0.05, respectively. The free energy of sorption (delta G) ranged from 11.43 to 13.38 kJ/mol indicates the spontaneity of the given sorption process of bensulfuron-methyl in soils. |
| Keywords: | bensulfuron methyl adsorption soil |
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