磷对土壤中砷吸附的影响

应用生态学报 ›› 2003, Vol. ›› Issue (11): 1989-1992.

磷对土壤中砷吸附的影响

雷梅, 陈同斌, 范稚连, 莫良玉, 黄泽春

中国科学院地理科学与自然资源研究所环境修复室, 北京 100101

收稿日期:2002-07-05 修回日期:2003-02-08 出版日期:2003-11-15
通讯作者: 陈同斌
基金资助:
国家重点基础研究发展规划项目(G1999011808);北京市自然科学基金重大项目(6990002);国家自然科学基金资助项目(40071075)

Effect of phosphorus on arsenic adorption by three different soils

LEI Mei, CHEN Tongbin, FAN Zhilian, MO Liangyu, HUANG Zechun

Environmental Remediation Laboratory, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Received:2002-07-05 Revised:2003-02-08 Online:2003-11-15

摘要/Abstract

摘要： 在黄壤、红壤和褐土中进行As的等温吸附实验表明,在不添加P的情况下,3种土壤对As的吸附能力随土壤pH的升高而降低,随土壤粘粒含量的降低而减弱,3种土壤吸附能力为黄壤>红壤>褐土.As在土壤中的吸附受P存在的影响,60mg·kg^-1的P可以降低黄壤和红壤对As的最大吸附量.吸附质中P:As的比例不同,P对土壤吸附As的影响差异很大:吸附质中P:As=1:2时,土壤对As的吸附能力均强于P:As=1:1和P:As=2:1,后两者差异不显著,表明土壤中的吸附点位对As和P的亲和性具有一定的差异.Langmuir方程能很好地拟合所测得的土壤平衡溶液中As浓度.

Abstract: The effect of phosphorus on arsenic adsorption by yellow soil, red soil and brown soil was studied using batch experiment. The results indicated that the arsenic without Pamendment adsorption capacity of three tested soils was yellow soil>red soil>brown soil.The maximal adsorption capacity of yellow soil and red soil was decreased with 60 mg穔g^-1 phosphorus added,and that of brown soil was increased with 20 mg穔g^-1 phosphorus added.The arsenic adsorption capacity of three soils was greater when P:As=1:2 than that when P:As=1:1 and P:As=2:1, and the differences between P:As=1:1 and P:As=2:1 treatments were not significant. Observations could be better fitted by Langmuir equations.

中图分类号:

X131.3

雷梅, 陈同斌, 范稚连, 莫良玉, 黄泽春. 磷对土壤中砷吸附的影响[J]. 应用生态学报, 2003, (11): 1989-1992.

LEI Mei, CHEN Tongbin, FAN Zhilian, MO Liangyu, HUANG Zechun. Effect of phosphorus on arsenic adorption by three different soils[J]. Chinese Journal of Applied Ecology, 2003, (11): 1989-1992.

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