里下河农村地区河道底泥有机物污染特征分析

Characteristics of Organic Pollutants in River Sediments in the Rural Areas of the Lixiahe River Watershed

通过测定里下河3个地区不同环境周围河道底泥中4种有机物含量,分析了苯酚类、多环芳烃类、邻苯二甲酸酯类和有机磷类物质的分布特征,结果显示:所检测的河道均受到4种有机物的污染,有机物在不同地点分布特征不同,具体含量分布表现为苯酚类物质:村庄农田附近>生活区附近>养殖场附近;多环芳烃类物质:生活区附近>村庄农田附近>养殖场附近;邻苯二甲酸酯类物质,生活区附近>养殖场附近>村庄农田附近;有机磷类物质主要分布在村庄农田附近。

The distribution characteristics of phenols, polycyclic aromatic hydrocarbons, phthalates, and organicphosphorus substances were analyzed by measuring their contents in the river sediments in three different regions ofthe Lixiahe River watershed. The results showed that the river was contaminated by these four kinds of organic mat-ter. Their distributions in different locations were different. For phenol substances, it was detected most in thefarmland near the village, followed by the residential areas and the poultry breeding areas. The residential areashad the most polycyclic aromatic hydrocarbon substances, and the farmland near the village and the poultry breed-ing areas had less of it. Phthalate esters were found most in the residential areas, and they were less detected in thepoultry breeding areas and the farmland near the village. Organic phosphorus substances are mainly distributed inthe farmland adjacent to village.