太原市降水化学特征的时间变化与来源解析
Time Variation and Source Analysis of Precipitation Chemical Characteristics in Taiyuan City
龙腾飞 1王振涛 1崔阳 1何秋生 2雷佳丽1
作者信息
- 1. 太原科技大学环境与资源学院, 山西 太原 030024
- 2. 山西职业技术学院材料环境工程系, 山西 太原 030000
- 折叠
摘要
基于2011-2021年太原市大气湿沉降(降雨、降雪)样品,分析了大气污染物浓度降低时期降水中化学组分的变化特征.结果表明,降水pH值与降雨量呈负相关,10年间酸雨频次逐年递减.Ca2+、NH4+、SO42-和NO3-是含量最丰富的离子;SO2 仍是造成降水酸性的主要原因,但NOx对酸雨的贡献逐年增加.燃煤消耗量的持续下降是SO42-浓度下降的主要原因,而NO3-浓度的上升与机动车保有量的增加有关.
Abstract
Based on the atmospheric wet deposition(rain,snow)samples in Taiyuan from 2011 to 2021,the variation characteristics of chemical components in precipitation during the period of decreasing atmospheric pollutant concentration were analyzed.The results show that there is a negative correlation between the pH value of precipitation and rainfall,and the frequency of acid rain has been decreasing year by year over the past 10 years.Ca2+,NH4+,SO42-,and NO3-are the most abundant ions.SO2 remains the main cause of acidity in precipitation,but the contribution of NOx to acid rain has been increasing year by year.The continuous decrease in coal consumption is the main reason for the decrease in SO42-concentration,while the increase in NO3-concentration is related to the increase in motor vehicle ownership.
关键词
大气降水/水溶性离子/年际变化/来源解析Key words
atmospheric precipitation/water soluble ions/inter annual variation/source analysis引用本文复制引用
基金项目
山西省基础研究计划(20210302124474)
大学生创新创业训练计划培训计划(220230688)
大学生创新创业训练计划培训计划(XJ2023069)
出版年
2024
NETL
NSTL
万方数据