|Table of Contents|

Investigation and research on volatile halogenated hydrocarbon contamination from groundwater in 69 cities of China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2012年第01期
Page:
66-71
Research Field:
水资源与环境
Publishing date:

Info

Title:
Investigation and research on volatile halogenated hydrocarbon contamination from groundwater in 69 cities of China
Author(s):
GAO Cun-rong;  WANG Jun-tao
China Institute of Geo-environmental Monitoring, Beijing 100081, China
Keywords:
groundwater;  volatile halogenated hydrocarbon;  contamination;  detection;  city;  chloroform;  detection ratio;  over standard rate
PACS:
P641.3; X523
DOI:
-
Abstract:
In order to understand the contamination situation and characteristics of volatile halogenated hydrocarbon(VHH)in groundwater of main cities, China, the investigation and research on VHH contamination from groundwater in 69 cities of China were carried out. 791 groundwater samples were collected from wells for industrial and agricultural production and wells for living and drink; mass concentrations of 15 kinds of VHHs, which were chloroform, carbon tetrachloride, 1,1,1-trichloroethane, trichloroethylene, tetracarp, dichloromethane and so on, were analyzed with the analytical apparatus combined gas chromatography and mass spectrometry(P&T-GC/MS)based on US EPA 8260B test method. The results showed that at least one kind of VHHs could be detected in 406 groundwater samples, and the detection ratio of the samples to the 791 groundwater samples was 51.33%; the detection ratio for chloroform was highest(20.35%)among the VHHs, and the ratios for other VHHs were 0.25%-5.06%; no chloroethylene was detected in all the samples; mass concentrations of single VHH of 13 groundwater samples exceeded the standard value, and the over standard rate was 1.64%; VHHs with the over standard rate ranked in descending order were carbon tetrachloride(0.76%), chloroform(0.25%), 1,2-dichloroethane(0.25%), trichloroethylene(0.13%), 1,1,2-trichloroethane(0.13%)and 1,2-dichloropropane(0.13%); mass concentrations of VHHs from the wells in drinking water source area were lower than that in other areas. In general, the detection ratios of VHHs contamination from groundwater in main cities of China were high, at least one kind of VHHs could be detected in 71% of the 69 cities, and the detection ratios in unconfined aquifer were higher than that in confined aquifer, but the over standard rates were low.

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Last Update: 2012-03-20