摘要
根据遂宁市2006—2013年降水监测数据,对该地区的酸雨特征和降水化学组成进行了研究,并与周边地区降水监测结果进行了横向比较。结果表明:遂宁市2011年和2012年存在酸雨污染现象,其年均p H值分别为5.60和5.62,达到和接近轻酸雨区等级划分标准;遂宁市降水中p H的变化趋势与周边地区一致,呈现出一定的区域性污染特征;降雨成分中的SO42-是主要的致酸物质;遂宁市降水中的主要致酸物质有硫酸盐型向硝酸盐型转化的趋势。
The characteristics of acid rain and the chemical composition of precipitation in Suining were studied based on the monitoring data from 2006 to 2013. The results showed that the acid rain in Suining appeared in 2011 and 2012 with the annual average pH of 5.60 and 5.62 respectively. The degree of contamination has nearly reached the grade standard of light acid rain district. There was no significant change in the average pH value in the rest of six years with the range at 6. 65 - 7.03. The same trend of pH in Suining showing the regional pollution characteristics. The SO42- in precipitation was the analysis of the change in the precipitation of of NO3 -/SO42- ratio in precipitation, the phenomena wad Suinig was changing from sulfate to nitrate. and surrounding areas was found- major acid material. Based on the found that the major acid material
出处
《环境科学导刊》
2015年第4期53-56,共4页
Environmental Science Survey
