摘要
研究了体系pH值和土壤矿物成分对贵州省安顺和合肥两个地区碳酸盐岩红土吸附砷的影响 ,探讨了红土对砷的吸附机理 .研究发现 :pH值是影响砷吸附的重要因素 ,一般来说 ,酸性环境 (pH =4— 7)有利于红土对砷的吸附 ,随着体系pH值的升高 ,红土对砷的吸附量逐渐降低 ;不同矿物成分的红土对砷的吸附性能差异很大 ;含针铁矿高的红土对砷表现出良好的吸附性能 。
The characteristics of adsorption of arsenic in red soil in Anshun and Zunyi areas affected by pH value and mineral were studied in this research work,and the adsorb mechanism of arsenic in red soil was discussed.Results shown that pH value is an important factor that affects adsorption of arsenic.Acidic environment(pH=4—7)is propitious to adsorption of arsenic,the capacities of arsenic adsorption decreased with the increase of pH value of the solution.Different minerals cause different effects on the adsorption of arsenic.Goethite is an important adsorbent.
出处
《环境化学》
CAS
CSCD
北大核心
2003年第2期121-125,共5页
Environmental Chemistry
基金
国家自然科学基金重点项目 (4983 3 0 0 0 2 )
攀登 95 预 3 9项目资助
贵州省科学技术基金项目资助
