Distribution characteristics and source of BTEX in groundwater in Guangzhou, Guangdong Province, P. R. China

IF 1.7 4区地球科学 Q3 WATER RESOURCES

Journal of Groundwater Science and Engineering Pub Date : 2016-09-01 DOI:10.26599/jgse.2016.9280028

Chunyan Liu, Jichao Sun, Ji-hong Jing, Ying Zhang, Weijing Guo

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Abstract

: In order to find out the distribution characteristics of BTEX in groundwater, which include Benzene, Toluene, Ethylbenzene, p-Xylene, m-Xylene, and o-Xylene, 82 groups of groundwater samples and 10 surface water samples collected from Guangzhou in Guangdong during 2005 to 2008 were tested by gas chromatography and mass spectrum(GC/MS). The result showed that the BTEX concentration in groundwater does not exceed the standard. The detection rate of BTEX is 14.63% in groundwater, and the total BTEX concentration is lower than 9.5 µ g/L. Of 6 kinds of BTEX, toluene had the highest detection rate (12.20%) and detection value (9.5 µ g/L), which was followed by Benzene, with the detection rate of 3.65%, and detection value of 4.9 µ g/L respectively; most of samples with BTEX are distributed in Huangpu district, Baiyun district, Huadu district and other industrialized areas; this spatial distribution and urban distribution have obvious consistency. With economic development, plant expansion and population growth led to a large amount of waste water discharge, and infrastructure construction is lagging behind, indicating that rapid urbanization is a major driving force of BTEX in groundwater, and through the analysis of a typical area, it is found that benzene system surface water infiltration was an important source of BTEX in groundwater of Guangzhou.

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广东省广州市地下水中BTEX的分布特征及来源

为了了解地下水中苯、甲苯、乙苯、对二甲苯、间二甲苯和邻二甲苯等BTEX的分布特征，采用气相色谱-质谱(GC/MS)技术对2005 - 2008年广东广州82组地下水和10组地表水样品进行了检测。结果表明，地下水中BTEX的浓度没有超标。地下水中BTEX的检出率为14.63%，总BTEX浓度低于9.5µg/L。6种BTEX中，甲苯的检出率最高(12.20%)，检出值最高(9.5µg/L)，其次是苯，检出率为3.65%，检出值为4.9µg/L;BTEX样本主要分布在黄浦区、白云区、花都区等工业化地区;该空间分布与城市分布具有明显的一致性。随着经济发展、厂房扩张和人口增长导致大量废水排放，基础设施建设滞后，表明快速城市化是地下水BTEX的主要驱动力，通过对典型区域的分析，发现苯系地表水入渗是广州地下水BTEX的重要来源。

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来源期刊

Journal of Groundwater Science and Engineering WATER RESOURCES-

CiteScore

2.80

自引率

9.10%

发文量

308

期刊介绍： It publishes original, innovative, and integrative research in groundwater science and engineering with a focus on hydrogeology, environmental geology, groundwater resources, agriculture and groundwater, groundwater resources and ecology, groundwater and geologic environment, groundwater circulation, groundwater pollution, groundwater exploitation and utilization, hydrogeological standards and methods, groundwater information science, climate change and groundwater. The Editorial Board is composed of more than sixty world-renowned experts and scholars, 47% of whom are foreign scientists. Up to now, the foreign authors contributed papers are from USA, Japan, Canada, Australia, Russia, Mongolia, Thailand and Vietnam.