pollution intensity

Storm water samples collected from an urban road in Xi ′ an City show that the urban road surface runoff has much greater pollution intensity of SS and COD and possess less biodegradability.

对西安市南二环路雨天路面径流排水进行了连续取样监测，表明城市道路路面径流污染物SS和COD具有很高的污染强度，且生物可降解性较差。

Then we studied relation between resource and distribution of SO_2 and TSP in Lanzhou. Referring to the state air quality standard, distribution of pollution intensity of the above pollutants was regionalized.

研究了兰州市SO2，TSP等几种大气污染物的空间分布特征与污染源的内在关系，并且结合国家环境空气质量标准中各项污染物的浓度限值，分别对上述污染物的污染强度进行了区域划分。

The results show that the expressway runoff has greater pollution intensity and the main pollutants are SS and COD with rather low biodegradability.

结果表明，高速公路路面排水具有较高的污染强度，污染物以SS和COD为主，且生物可降解性较差。