title: [Quantitative analysis of nitrate in atmospheric particulates PM2.5 with Fourier transform infrared spectroscopy].
abstract: Airborne fine particulate matter PM2.5 as one of composite core pollutants of air pollution is concerned and NO as one of the main components of water-soluble ions has an important impact on precipitation and human health, so searching a method of rapid and reliable detection is an important work. According to advantages of the Fourier transform infrared spectroscopy technology, the infrared spectrum of NO3- in NH4NO3 was compared with PM2.5 by a sampling method of making film. The result shows that their spectra are consistent with each other. A range of infrared spectra of different masses of NO3- were measured and the absorbance was fitted with mass, correlation and mass range of which are 0.994 8 and 7.82-73.78 microg, respectively. According to the corresponding relationship of mass between solution and sample film, the FTIR of the sample film was measured directly and mass concentrations of NO3- in a month (between 2012-03-20 and 2012-04-20) of Hefei area are listed and the average is 4.1713 microg x m(-3).
authors.affiliation: Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. nliu@aiofn.ac.cn
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.forename: Xiu-li
authors.initials: XL
authors.lastname: Wei
authors.forename: Min-guang
authors.initials: MG
authors.lastname: Gao
authors.forename: Liang
authors.initials: L
authors.lastname: Xu
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiao
authors.forename: Sheng
authors.initials: S
authors.lastname: Li
authors.forename: Jing-jing
authors.initials: JJ
authors.lastname: Tong
authors.forename: Si-yang
authors.initials: SY
authors.lastname: Cheng
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D009566:Nitrates / Q000032:analysis*; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000393:Air Pollutants; D009566:Nitrates; D052638:Particulate Matter