文档介绍：第 29 卷
第 3 期
世
界
地
质
Vol. 29
No. 3
2010 年 9 月
GLOBAL GEOLOGY
Sept. 2010
文章编号: 1004 - 5589 ( 2010) 03 - 0490 - 05
垃圾渗滤液污染地下环境介质岩性对 pH 缓冲能力的影响
董军,马小兰,何正坤
吉林大学环境与资源学院,长春 130026
摘要: 通过模拟实验研究垃圾渗滤液污染地下环境介质岩性对 pH 缓冲能力变化的影响。亚黏土和砂
土的 pH 缓冲容量的本底值分别为 440. 20 和 324. 93 mmol / ( kg·pH) ,其中阳离子交换缓冲、碳酸钙
缓冲、硅酸盐缓冲和次级缓冲的本底值分别为 206. 18、88. 43、75. 79 和 69. 80 mmol / ( kg · pH ) ,
149. 31、86. 53、47. 33 和 41. 77 mmol / ( kg·pH) 。污染的亚黏土和砂土的交换性阳离子( CEC) 和交换
性盐基离子( BEC) 均小于本底值; 盐基饱和度随离污染源距离的增加呈先升高后降低的变化趋势。
关键词: 垃圾渗滤液; pH 缓冲体系; 介质; 岩性
中图分类号: X523
文献标识码: A
doi: 10. 3969 / j. issn. 1004-5589. 2010. 03. 018
InFluences on pH BuFFering capacity oF suBsurFace environmental
media lithology polluted By landFill leachate
DONG Jun,MA Xiao-lan,HE Zheng-kun
College of EnVironment and ResourCes,Jilin UniVersity,ChangChun 130026,China
ABstract: Simulated experiment was constructed to investigate the influences on pH buffering capacity of sub-
surface environmental media lithology polluted by landfill leachate. Experimental results indicated that the back-
ground values of pH buffering capacity of loam and sandy soil as 440. 20 and 324. 93 mmol / ( kg·pH) . Cation
exchange,calcium carbonate,silicate and secondary buffering capacity of loam as 206. 18、88. 43、75. 79 and
69. 80 mmol / ( kg pH) and that of sandy soil as 149. 31,86. 53,47. 33 and 41. 77 mmol / ( kg pH