济南市PM_(2.5)中金属及类金属元素季节性变化及相关性分析  

Seasonal Variation and Correlation of Metals and Metalloids Elements in PM_(2.5) in Jinan City

作　　者：孙湛[1] 刘素萍[1] 张谊[1] 刘岚铮[1] 

机构地区：[1]济南市疾病预防控制中心

出　　处：《环境卫生学杂志》2017年第5期403-407,共5页JOURNAL OF ENVIRONMENTAL HYGIENE

摘　　要：目的分析济南市PM_(2.5)的浓度特征、金属及类金属的季节变化以及相关性研究,为济南市大气污染的治理提供参考依据。方法 2016年选择历城区和市中区两个采样点,每月的10—16日,采集PM_(2.5)样品,检测分析PM_(2.5)质量浓度和金属及类金属浓度变化趋势。结果 PM_(2.5)质量浓度为79.7μg/m^3,高于环境空气质量标准平均浓度二级限值,PM_(2.5)质量浓度和金属及类金属元素浓度的全年整体趋势都是由高逐渐降低,保持相对平稳,再逐步升高,冬季>秋季>春季>夏季,历城区高于市中区。结论研究结果提示济南市PM_(2.5)中金属及类金属元素季节性变化明显,尤其是冬季受到气象条件影响PM_(2.5)污染最为严重。大气污染防控是一项系统工程,需要长时间地综合治理,重视不同季节大气污染,制定相应的大气污染防控措施。Objective To analyze the concentration characteristics and seasonal change of metal and metalloids elements in PM（2.5） to provide a basis for the control of air pollution in Jinan city. Method PM（2.5） samples were collected from two sampling points,Licheng and Shizhong,on the 10 th-16 th days of each month in 2016,to determine the concentration of PM（2.5） in air and the concentration of metals and metalloids in PM（2.5） samples by ICP-MS.Results The mass concentration of PM（2.5） was 79. 7 μg/m^3,which was higher than that of the second degree of standard limit of ambient air quality. The trend of the concentration of PM（2.5） and the concentration of metals and metalloids in PM（2.5） in the year was reducing gradually,keeping relatively stable,and then gradually increasing,winter autumn spring summer,Licheng Shizhong. Conclusions There was an obviously seasonal variation of metals and metalloids in PM（2.5） in Jinan,especially the pollution of PM（2.5） was most affected by meteorological condition in the winter. The prevention and control of air pollution is a systematic project. It is necessary to have a comprehensive control over a long period of time,and to pay more attention to the air pollution in different seasons,as well as to formulate corresponding prevention and control measures for air pollution.

关 键 词：PM(2 5) 金属及类金属 季节变化 相关性 

分 类 号：X513[环境科学与工程—环境工程]