土壤环境中活性X-3B红染料的吸附行为及影响因素  

Adsorption Behavior of Reactive X-3B Red Dye in Soil Environment and Relevant Influencing Factors

作　　者：周启星[1] 贾宏宇[1] 唐翔宇[2] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程开放研究实验室 [2]中国科学院南京土壤研究所,南京210008

出　　处：《环境科学》2002年第2期82-86,共5页Environmental Science

基　　金：国家自然科学基金资助项目 (2 970 70 0 2 ) ;中科院"引进国外杰出人才"及"百人计划"项目

摘　　要：对土壤吸附活性X 3B红染料的速率进行了测定 ,表明可以划分为高速吸附、减速吸附、缓慢吸附和 0 (平衡 )吸附 4个阶段 ;但各土类在各不同的阶段 ,其吸附速率差异较大 .通过对活性X 3B红染料的土壤吸附等温线的研究 ,发现其吸附行为与Langmuir方程相吻合 ;在此基础上的计算表明 ,该染料在土壤上的最大吸附量为 :水稻土 >红壤 >棕壤 >褐土 .从环境因素的影响而论 ,模拟结果显示 :当土壤有机质较低或气温下降 ,当土壤处于中性状态或水分过多和过少 ,均能通过减少其吸附量达到降低活性XThe determination of rates of soil adsorbing reactive X 3B red dye opened out that the adsorption of the dye by soils could be divided into four stages: high speed adsorption, slowdown adsorption, slow speed adsorption and zero adsorption. There was a great difference in adsorptive rates between various soil types during these different stages. The research on adsorptive isotherms of reactive X 3B red dye pointed out that adsorptive behavior of the dye tallied with the Langmuir equation. The calculation on the basis of the adsorptive isotherms indicated that the maximum adsorption of the dye was in the sequence paddy soil>red soil>brown earth>cinnamon soil. As for relevant environmental factors influencing this adsorption, contents of organic matter and water in soils, soil pH and air temperature were involved. When soil organic matter or air temperature was reduced and soils were at neutral, runny or unwatered conditions, the adsorption of the dye on soils was decreased, thereby inhibiting the accumulation of the dye in soil environment.

关 键 词：土壤环境 有机污染物 活性X-3B红染料 吸附作用 环境行为 

分 类 号：X53[环境科学与工程—环境工程] R124[医药卫生—环境卫生学]