松花江沿岸某城市浅层地下水有机污染特征

对2005年11月12日中石油吉林石化分公司双苯厂发生爆炸事故所引起的松花江沿岸某城市浅层地下水污染状况进行了调查研究。结果表明，研究区浅层地下水中，除1，2-二氯丙烷、氯苯、苯和乙苯浓度在个别采样井点检出超过《地下水质量标准》三类水质标准外，其它各有机污染物浓度都普遍较低；城区浅层地下水有机污染程度远远重于城郊，且分布在城区东部化工厂一带的工业区，个别地段地下水有机污染程度不容乐观。因此，松花江水与地下水的积极交替带仅限于几百米，研究区内浅层地下水的有机污染是历史因素和人为活动共同作用的结果。

Organic Contamination Characteristic of Shallow Layer Groundwater in Some Littoral City of Songhua River

November 12th in 2005, a explosion occurred in double benzene factory of Jilin. After affairs took place, pollution condition of shallow layer groundwater in some littoral city of Songhua River was investigated. The results showed that, in addition to concentrations of 1, 2-dichloropropane, chlorobenzene, benzene and ethylbenzene exceeded water quality m standard of Quality Standard for Ground Water in individually samples of shallow layer groundwater, other organic pollutants concentrations were lower in study area. The organic pollution of shallow layer groundwater in urban area was more serious than that in suburbs, and the organic pollution distributed in industrial area of chemical engineering factory at eastern of the urban area, the organic pollution degree of groundwater in individual districts is not optimistic. Thus, the aggressive alternation of Songhua River and groundwater takes to be limited by dimension of hundreds meters, the organic pollution of the shallow layer groundwater inside the research area is coefficient result of history factor and artificial activity.