摘要
近海滩涂是一类集中反映人类活动对地区环境影响的特定环境系统,其沉积物中腐殖质对排入重金属的迁移规律有显著影响。本文以渤海近岸滩涂沉积物为分析对象,提取其中腐殖酸,对 Cr(Ⅲ)进行吸附性能实验分析, 结果表明：0.1g 的腐殖酸在室温条件下(20～25℃),pH 值在4～5之间,在 Cr(Ⅲ)的浓度达到800μg/mL 时可达到饱和吸附,吸附量为6.5mg/g；腐殖酸对 Cr(Ⅲ)的吸附符合 Langmuir 等温吸附方程。
The tideland is a kind of special environment system, which can mirror influences from human being＇s activities, and the humus in the sediments will affect the moving laws of heavy metals, with the tideland sediments as the object of the study, the authors extracted the humic acid and tested the adsorption of Cr（Ⅲ） in water solution. The result shows that 0. 1g humic acid can reach saturation adsorption under the anditions of room temperature （20- 25℃ ）, pH 4-- 5 and Cr（ Ⅲ ） concentration 800 μg/mL. The adsorption capacity is 6.5mg/g. The adsorption is fitted well to the Langmuir isotherm equation.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2006年第2期157-161,共5页
Acta Petrologica et Mineralogica
基金
天津科技大学科学研究基金(20050211)
关键词
滩涂
沉积物
腐殖酸
铬
吸附
tideland
sediment
humic acid
chromium
adsorption
