Research on Groundwater Organic Contamination Characteristics in 69 Cities of China
我国69个城市地下水有机污染特征研究

Organic contamination detection results from 69 cities of 31 provinces show that at least one organic matter was detected in 383 samples among 791 samples detected,with the detection ratio of 48.42%.Single organic pollutant exceeds the standard in 18 samples,and the over-limit of carbon tetrachloride,benzene,chloroform,1,2-dichloroethane,trichloroethylene,1,1,2-trichloroethane,1,2-dichloropropane,and benzo(a) pyrene is 0.75%,0.5%,0.25%,0.25%,0.13%,0.13%,0.13% and 0.13% respectively.Most sampling wells are a...