佛山东部地下水BTEX分布特征与来源  

Distribution characteristics and source of BTEX in groundwater of Eastern Foshan,Guangdong

作　　者：刘春燕[1] 黄冠星[1] 张英[1] 荆继红[1] 孙继朝[1] 刘景涛[1] 陈玺[1] 王建伟[2] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,石家庄050061 [2]河北省地矿局国土资源勘查中心,石家庄050081

出　　处：《南水北调与水利科技》2015年第4期654-658,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：国土资源大调查项目(1212011121167)

摘　　要：为了解佛山东部地下水中BTEX 的分布情况, 利用2005 年- 2008 年水样测试数据（ 37 组地下水水样和10 组地表水水样） , 采用气相色谱- 质谱联用技术进行测定.结果表明, 地下水中BTEX 的检出率为24. 32%, 6 种BTEX 的质量浓度在未检出- 27. 2 Lg/ L 之间.其中, 甲苯的检出率最高, 为24. 32%, 最大值为10. 7 Lg/ L; 苯次之, 检出率为10. 81%, 最大值为9 Lg/ L, 乙苯、间/ 对-二甲苯、邻-二甲苯均仅有个别组检出, 且均未超标.地下水中BTEX 主要分布于佛山东部南海区, 以单种BTEX 检出为主; 地下水中BT EX 与地表水中的BTEX 分布特征存在明显的相似性, 均以甲苯和苯为主.含BTEX 地表污水的下渗是佛山东部地区地下水中BT EX 的重要来源.In order to determine the distribut ion characteristics of BTEX ( including Benzene, Toluene, Et hylbenzene, o-Xylene, m-Xylene, and o-Xylene) in groundw ater, 37 groups of groundw at er sam ples and 10 surface wat er samples collected from the east-ern area of Foshan in Guangdong during 2005 to 2008 were tested using t he gas chromatography and mass spectrum ( GC/ MS) . The results showed that the detection rate of BTEX is 24. 32% in groundw ater, and the total BTEX concentrat ion is low er than 27. 2 μg/ L. Among the six kinds of BTEX, T oluene had t he highest detection rate ( 24. 32% ) and detect ion value ( 10. 7 μg/ L) , which was follow ed by Benzene w ith the detection rate of 10. 81% and detection value of 9 μg/ L respect ively. Ethylbenzene, p-Xylene, m-Xylene, and o-Xylene w ere only detect ed in a few of samples, and the concentrations in groundw ater did not exceed the st andard. Most of samples with BT EX w ere dist ributed in Nanhai area, and most of groundwater samples w ere detected con-taining only one kind of BTEX. There w as an obvious correlation bet ween the BT EX distributions in groundw ater and surface water, and Toluene and Benzene were the dominating BTEX in surface water. The infiltration of surface water containing BT EX is an important source of BTEX in groundw ater of the eastern area of Foshan.

关 键 词：佛山东部 地下水 BTEX 分布特征 来源探讨 

分 类 号：X523[环境科学与工程—环境工程]