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阿特拉津在土壤中的吸附行为
  • 期刊名称:环境污染与防治, 29(3), p165-167, 2007.3
  • 时间:0
  • 分类:X592[环境科学与工程—环境工程]
  • 作者机构:[1]吉林大学环境与资源学院,吉林长春130026
  • 相关基金:国家重点基础研究发展规划“973”项目(No.2004CB418505);国家自然科学基金资助项目(No.50478006).
  • 相关项目:城市垃圾填埋场地下水污染的模拟与控制技术研究
中文摘要:

研究了阿特拉津(AT)在3种岩性土壤中的吸附规律。探讨了离子强度、TOC和pH等因素对AT吸附的影响。结果表明:TOC对AT在土壤中吸附的影响较大;增加离子强度,会提高AT在土壤中的吸附能力;pH与AT的吸附量呈负相关。

英文摘要:

Adsorption isotherm and rate experiments were performed on three soil slurry samples (50 g/100 mL of solution) to determine the effects of pH,ionic strength, and TOC on adsorptive capacities for atrazine. The small observed capacities for atrazine were due to its high water solubility (33 mg/L at 27℃); the capacities vs. equilibrium concentration relationships were well correlated by the Freundlich adsorption isotherm. Organic content of the soil sample was the most important factor affecting the atrazine capacity; the highest capacity was found in the soil slurry with the highest TOC. The capacity was higher at a higher ionic strength (NaCl and KNO3 concentration) and/or a lower pH of the slurry sample.

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