Hydrochemistry indicating groundwater contamination and the potential fate of chlorohydrocarbons in combined polluted groundwater: a case study at a contamination site in North China.
Groundwater contamination characteristics and the potential fate of chlorohydrocarbons were investigated at a combined polluted groundwater site in North China. Groundwater chemistry and (2)D and (18)O isotope compositions indicated that high salination of groundwater was related with chemical pollution. The elevated salinity plume was consistent with the domain where typical chlorohydrocarbon contaminants occurred. The concentrations of heavy metals, oxidation-reduction potential, and pH in organic polluted areas significantly differed from those in peripheral (background) areas, indicating modified hydrochemistry possibly resulting from organic pollution. Under the presented redox conditions of groundwater, monochlorobenzene oxidation may have occurred when the trichlorohydrocarbons underwent reductive dechlorination. These findings suggested that inorganic hydrochemistry effectively indicated the occurrence of chemical contamination in groundwater and the potential fate of chlorohydrocarbons.
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, CAGS, Shijiazhuang, 050061, People's Republic of China, shuangbinghuang@gmail.com.
Shuang-Bing
SB
Huang
Zhan-Tao
ZT
Han
Long
L
Zhao
Xiang-Ke
XK
Kong
D002681:China; D004784:Environmental Monitoring / Q000379:methods; D004787:Environmental Pollution / Q000032:analysis*; D060587:Groundwater / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000737:chemistry; D054712:Salinity; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
D006843:Hydrocarbons, Chlorinated; D014874:Water Pollutants, Chemical