DOI: 10.1016/j.atmosenv.2018.02.052
Scopus记录号: 2-s2.0-85042860774
论文题名: Photo-oxidation products of Α-pinene in coarse, fine and ultrafine aerosol: A new high sensitive HPLC-MS/MS method
作者: Feltracco M ; , Barbaro E ; , Contini D ; , Zangrando R ; , Toscano G ; , Battistel D ; , Barbante C ; , Gambaro A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 180 起始页码: 149
结束页码: 155
语种: 英语
英文关键词: Aerosol
; Cis-pinonic acid
; HPLC-MS/MS
; Pinic acid
; Ultrafine particles
Scopus关键词: Aerosols
; Free radicals
; High performance liquid chromatography
; Image processing
; Liquid chromatography
; Meteorological instruments
; Olefins
; Oxidation
; Particle size
; Particle size analysis
; Atmospheric conditions
; Cis-pinonic acid
; Degradation pathways
; Environmental aerosols
; HPLC-MS/MS
; Pinic acid
; Triple-quadrupole mass spectrometer
; Ultrafine particle
; Monoterpenes
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Oxidation products of α-pinene represent a fraction of organic matter in the environmental aerosol. α-pinene is one of most abundant monoterpenes released in the atmosphere by plants, located typically in boreal, temperate and tropical forests. This primary compound reacts with atmospheric oxidants, such as O3, O2, OH radicals and NOx, through the major tropospheric degradation pathway for many monoterpenes under typical atmospheric condition. Although several studies identified a series of by-products deriving from the α-pinene photo-oxidation in the atmosphere, such as pinic and cis-pinonic acid, the knowledge of the mechanism of this process is partially still lacking. Thus, the investigation of the distribution of these acids in the different size aerosol particles provides additional information on this regard. The aim of this study is twofold. First, we aim to improve the existing analytical methods for the determination of pinic and cis-pinonic acid in aerosol samples, especially in terms of analytical sensitivity and limits of detection (LOD) and quantification (LOQ). We even attempted to increase the knowledge of the α-pinene photo-oxidation processes by analysing, for the first time, the particle-size distribution up to nanoparticle level of pinic and cis-pinonic acid. The analysis of aerosol samples was carried out via high-performance liquid chromatography coupled to a triple quadrupole mass spectrometer. The instrumental LOD values of cis-pinonic and pinic acid are 1.6 and 1.2 ng L−1 while LOQ values are 5.4 and 4.1 ng L−1, respectively. Samples were collected by MOUDI II™ cascade impactor with twelve cut-sizes, from March to May 2016 in the urban area of Mestre-Venice (Italy). The range concentrations in the aerosol samples were from 0.1 to 0.9 ng m−3 for cis-pinonic acid and from 0.1 to 0.8 ng m−3 for pinic acid. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82897
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Sciences, Informatics and Statistics, University of Venice, Ca’ Foscari, Via Torino 155, Venice, Italy; Institute for the Dynamics of Environmental Processes CNR, Via Torino 155, Venice, Italy; Institute of Atmospheric Sciences and Climate, ISAC-CNR, Lecce, Italy
Recommended Citation:
Feltracco M,, Barbaro E,, Contini D,et al. Photo-oxidation products of Α-pinene in coarse, fine and ultrafine aerosol: A new high sensitive HPLC-MS/MS method[J]. Atmospheric Environment,2018-01-01,180