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

Abstract

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

References

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