摘要
目的分析张家港市PM2. 5的浓度特征、金属及类金属的季节变化以及相关性,为张家港市大气污染的治理提供参考依据。方法 2016年选择张家港市城北小学为采样点,每月的10～16日采集PM2. 5样品,检测分析PM2. 5质量浓度特征和金属及类金属浓度变化趋势。结果 PM2. 5质量浓度为51. 4μg/m3,低于环境空气质量标准平均浓度二级限值,PM2. 5质量浓度和金属及类金属元素的全年整体趋势都是由高逐渐降低,保持相对平稳,然后逐步升高,春季>冬季>夏季>秋季。结论研究结果表明张家港市PM2. 5中金属及类金属元素季节性变化明显,尤其是春季、冬季受气象条件影响,PM2. 5污染最为严重。大气污染防控是一项系统工程,是一个需要长期坚持的综合性治理过程,重视不同季节大气污染,制定相应的大气污染控制措施。
Objective To analyze the concentration characteristics and seasonal change of metals and metalloids elements in PM2. 5 so as to provide a basis for the control of air pollution in Zhangjiagang City. Methods PM2. 5 samples were collected from Zhangjiagang City from the 10 th day to the 16 th day of each month in 2016. The concentration of PM2. 5 in air and the concentration metals as well as metalloids in PM2. 5 samples were determined by ICP-MS. Results The mass concentration of PM2. 5 was 51. 4 μg/m3,which was lower than that of the second degree of standard limit of ambient air quality. The trend of the concentration of PM2. 5,metals and metalloids in PM2. 5 in the year was reducing gradually,keeping relatively stable,and then gradually increasing,spring>winter>summer>autumn. Conclusion There was an obviously seasonal variation of metals and metalloids in Zhangjiagang. PM2. 5 pollution is most serious in spring and winter,due to meteorological conditions. The prevention and control of air pollution is a systematic project. It is necessary to have a comprehensive control over a longer 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.
作者
陈祝军
吴梅
夏威
于颖慧
CHEN Zhujun;WU Mei;XIA Wei;YU Yinghui(Zhangjiagang Center for Diseases Control and Prevention,Jiangsu 215600,China)
出处
《医学动物防制》
2019年第2期193-195,共3页
Journal of Medical Pest Control
基金
苏州市科技支撑计划项目(SYSD2016010)
张家港市科技支撑计划项目(ZKS1635)
