DOI: 10.1016/j.atmosenv.2014.07.031
Scopus记录号: 2-s2.0-84904431364
论文题名: Time-resolved characterization of particle associated polycyclic aromatic hydrocarbons using a newly-developed sequential spot sampler with automated extraction and analysis
作者: Eiguren-Fernandez A ; , Lewis G ; S ; , Spielman S ; R ; , Hering S ; V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 125
结束页码: 134
语种: 英语
英文关键词: Ambient particulate matter
; Polycyclic aromatic hydrocarbons
; Sequential spot sampler
; Time-resolved chemical speciation
Scopus关键词: Automation
; Chemical analysis
; Chemical speciation
; Laminar flow
; Liquid chromatography
; Polycyclic aromatic hydrocarbons
; Sampling
; Ambient particulate Matter
; Fine and ultrafine particles
; Liquid chromatography system
; Polycyclic aromatic hydrocarbons (PAHS)
; Sequential spot sampler
; Source apportionment
; Time-resolved
; Time-resolved characterization
; Extraction
; anthracene
; benzo[a]pyrene
; benzo[ghi]perylene
; benz[a]anthracene
; chrysene
; fluoranthene
; indeno[1,2,3 cd]pyrene
; perylene
; phenanthrene
; polycyclic aromatic hydrocarbon
; pyrene
; ambient air
; atmospheric pollution
; automation
; PAH
; particle size
; particulate matter
; sampler
; spatiotemporal analysis
; speciation (chemistry)
; article
; automation
; biomass
; chemical analysis
; concentration (parameters)
; controlled study
; extraction
; liquid chromatography
; particulate matter
; priority journal
; sampler
; California
; Stockton [California]
; United States
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: A versatile and compact sampling system, the Sequential Spot Sampler (S3) has been developed for pre-concentrated, time-resolved, dry collection of fine and ultrafine particles. Using a temperature-moderated laminar flow water condensation method, ambient particles as small as 6nm are deposited within a dry, 1-mm diameter spot. Sequential samples are collected on a multiwell plate. Chemical analyses are laboratory-based, but automated. The sample preparation, extraction and chemical analysis steps are all handled through a commercially-available, needle-based autosampler coupled to a liquid chromatography system. This automation is enabled by the small deposition area of the collection. The entire sample is extracted into 50-100μL volume of solvent, providing quantifiable samples with small collected air volumes. A pair of S3 units was deployed in Stockton (CA) from November 2011 to February 2012. PM2.5 samples were collected every 12h, and analyzed for polycyclic aromatic hydrocarbons (PAHs). In parallel, conventional filter samples were collected for 48h and used to assess the new system's performance. An automated sample preparation and extraction was developed for samples collected using the S3. Collocated data from the two sequential spot samplers were highly correlated for all measured compounds, with a regression slope of 1.1 and r2=0.9 for all measured concentrations. S3/filter ratios for the mean concentration of each individual PAH vary between 0.82 and 1.33, with the larger variability observed for the semivolatile components. Ratio for total PAH concentrations was 1.08. Total PAH concentrations showed similar temporal trend as ambient PM2.5 concentrations. Source apportionment analysis estimated a significant contribution of biomass burning to ambient PAH concentrations during winter. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81138
Appears in Collections: 气候变化事实与影响
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作者单位: Aerosol Dynamics Inc., 935 Grayson St., Berkeley, CA, United States
Recommended Citation:
Eiguren-Fernandez A,, Lewis G,S,et al. Time-resolved characterization of particle associated polycyclic aromatic hydrocarbons using a newly-developed sequential spot sampler with automated extraction and analysis[J]. Atmospheric Environment,2014-01-01,96