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。
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.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2007年第3期165-167,共3页
Environmental Pollution & Control
基金
国家重点基础研究发展规划"973"项目(No2004CB418505)
国家自然科学基金资助项目(No50478006)
关键词
阿特拉津
土壤
吸附
影响因素
Atrazine Soil Adsorption Affecting factor