秦鑫,张泽锋,李艳伟,沈艳,赵姝慧.南京北郊春季含Pb气溶胶粒子来源分析[J].环境科学学报,2015,35(3):641-646
南京北郊春季含Pb气溶胶粒子来源分析
- Sources analysis of Pb-containing aerosols in north suburb of Nanjing in spring
- 基金项目：国家自然科学基金(No.41005071,41275152);江苏高校优势学科建设工程资助项目(PAPD)
- 秦鑫
- 1. 南京信息工程大学, 中国气象局气溶胶-云-降水重点开放实验室, 南京 210044;2. 辽宁省人工影响天气办公室, 沈阳 110016
- 张泽锋
- 南京信息工程大学, 中国气象局气溶胶-云-降水重点开放实验室, 南京 210044
- 李艳伟
- 南京信息工程大学, 中国气象局气溶胶-云-降水重点开放实验室, 南京 210044
- 沈艳
- 南京信息工程大学, 中国气象局气溶胶-云-降水重点开放实验室, 南京 210044
- 赵姝慧
- 辽宁省人工影响天气办公室, 沈阳 110016
- 摘要：含有重金属的气溶胶粒子对人类健康有着重要的影响,其中,重金属Pb对人体神经系统有很大的危害,因此,含Pb气溶胶粒子的化学特征和来源问题一直受到人们的广泛关注.本研究于2012年3—4月使用在线单颗粒气溶胶质谱仪(SPAMS)在南京北郊对含Pb气溶胶粒子进行连续观测,并结合自适应共振理论神经网络算法(ART-2a)对其化学特征进行了分析.结果表明,南京北郊春季含Pb气溶胶粒子按照化学组成可分为6类:富钾-铅类(K-rich)、扬尘-铅类(DUST)、钾-元素碳-铅类(K-EC)、铜-元素碳-铅类(Cu-EC)、锌-铅类(Zn)和锰-铅类(Mn),它们主要来自钢铁冶炼、城市扬尘、燃油排放和化工排放,贡献率分别为70.66%、24.53%、2.47%和2.34%.
- Abstract：Aerosol particle which contains heavy metals has significant impact on human health, and Pb is especially harmful to nervous system of human being. Chemical features and sources of aerosol particles containing Pb have therefore aroused public concerns. In this study, aerosol particles were measured with Single Particle Aerosol Mass Spectrometry (SPAMS) in north suburb of Nanjing from March to April, 2012. Using the ART-2a neural network algorithm, we studied the chemical characteristics of aerosol particles and found that these aerosol particles can be classified into six categories according chemical composition: K-rich, DUST, K-EC, Cu-EC, Zn, and Mn. They were mainly from iron and steel making, fugitive dust, fuel drain and chemical emissions, with their respective contributions around 70.66%, 24.53%, 2.47% and 2.34%.
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