量子电子学报 ›› 2019, Vol. 36 ›› Issue (4): 495-499.

• 激光应用 • 上一篇    下一篇

郑州市PM2.5中无机离子浓度变化特征

魏秀丽1,高闽光2,童晶晶2   

  1. 中国科学院安徽光学精密机械研究所,中国科学院环境光学与技术重点实验室, 安徽 合肥 230031
  • 收稿日期:2018-01-29 修回日期:2019-05-21 出版日期:2019-07-28 发布日期:2019-07-11
  • 通讯作者: 魏秀丽
  • 作者简介:魏秀丽(1978- ),女,河南安阳人,硕士,副研究员,主要从事气溶胶化学物理方面的研究。
  • 基金资助:
    Supported by National Natural Science Foundation of China (国家自然科学基金, 41375027)

Characterization of Water-Soluble Species of PM2.5 in Zhengzhou

  1. Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2018-01-29 Revised:2019-05-21 Published:2019-07-28 Online:2019-07-11
  • Contact: xlwei@aiofm.ac.cn

摘要: 大气气溶胶PM2.5是形成大气灰霾的主要因素,在中国大部分城市已成为首要污染物。2014年春节前夕对郑州市进行了为期一周的大气颗粒物PM2.5样品采集,利用偏最小二乘(PLS)多元变量定量分析模型,分析了郑州市SO42-、NO3-和NH4+三种水溶性离子的衰减全反射傅里叶变换红外光谱(ATR- FTIR),并与离子色谱(IC)分析结果进行了对比。分析了郑州市春节前夕SO42-、NO3-和NH4+的污染特征和趋势,初步判定了气溶胶的污染来源。

关键词: 偏最小二乘, 衰减全反射傅里叶变换红外光谱, 水溶性离子, 定量分析

Abstract: The atmospheric aerosol PM2.5 is the main factor in the formation of atmospheric haze, and it’s the chief pollutant in most cities in China. Atmospheric particulate PM2.5 sample collection for almost one week before the eve of the 2014 Spring Festival in Zhengzhou is carried out. By using the partial least squares (PLS) multivariate quantitative analysis model, attenuated total reflection Fourier transformed infrared spectroscopy(ATR-FTIR)of the water-soluble ions SO42-, NO3- and NH4+ in Zhengzhou are analyzed, and the results are compared with those of ion chromatography(IC). The pollution characteristics and trend of SO42-, NO3-and NH4+ before the eve of the 2014 Spring Festival in Zhengzhou are analyzed, and the pollution sources of aerosol are preliminarily determined.

Key words: partial least squares, attenuated total reflection Fourier transformed infrared spectroscopy, water-soluble ions, quantitative analysis