DOI: 10.1016/j.atmosenv.2014.06.004
Scopus记录号: 2-s2.0-84902240760
论文题名: Characterization of concentration, particle size distribution, and contributing factors to ambient hexavalent chromium in an area with multiple emission sources
作者: Yu C ; H ; , Huang L ; , Shin J ; Y ; , Artigas F ; , Fan Z ; H ; T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 701
结束页码: 708
语种: 英语
英文关键词: Cr(VI)
; Diesel traffic
; Hexavalent chromium
; Particle size
Scopus关键词: Atmospheric humidity
; Chromium
; Linear regression
; Ores
; Particle size
; Particle size analysis
; Anthropogenic sources
; Atmospheric reactions
; Concentration levels
; Hexavalent chromium
; Meteorological factors
; Multiple emission sources
; Multiple linear regression analysis
; Temperature and humidities
; Chromium compounds
; chromium
; hexavalent chromium
; unclassified drug
; chromium
; concentration (composition)
; meadow
; particle size
; pollution monitoring
; regression analysis
; seasonal variation
; site investigation
; air quality control
; ambient air
; article
; environmental factor
; exhaust gas
; humidity
; meteorological phenomena
; particle size
; particulate matter
; photooxidation
; pilot study
; priority journal
; solar radiation
; summer
; temperature
; winter
; New Jersey
; 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: Airborne hexavalent chromium (Cr(VI)) is a known pulmonary carcinogen and can be emitted from both natural and anthropogenic sources, including diesel emissions. However, there is limited knowledge about ambient Cr(VI) concentration levels and its particle size distribution. This pilot study characterized ambient Cr(VI) concentrations in the New Jersey Meadowlands (NJ ML) district, which is close to the heavily trafficked New Jersey Turnpike (NJTPK) as well as Chromium Ore Processing Residue (COPR) waste sites. Monitoring was simultaneously conducted at two sites, William site (~50m from NJTPK) and MERI site (~700m from NJTPK). The distance between the two sites is approximately 6.2km. Ambient Cr(VI) concentrations and PM2.5 mass concentrations were concurrently measured at both sites during summer and winter. The summer concentrations (mean±S.D. [median]), 0.13±0.06 [0.12] ng/m3 at the MERI site and 0.08±0.05 [0.07] ng/m3 at the William site, were all significantly higher than the winter concentrations, 0.02±0.01 [0.02] ng/m3 and 0.03±0.01 [0.03] ng/m3 at the MERI and William sites, respectively. The site difference (i.e., MERI>William) was observed for summer Cr(VI) concentrations; however, no differences for winter and pooled datasets. These results suggest higher Cr(VI) concentrations may be attributed from stronger atmospheric reactions such as photo-oxidation of Cr(III) to Cr(VI) in the summer. The Cr(VI) distribution as a function of particle size, ranging from 0.18 to 18μm, was determined at the William site. It was found that Cr(VI) was enriched in the particles less than 2.5μm in diameter (PM2.5). This finding suggested potential health concerns, because PM2.5 are easily inhaled and deposited in the alveoli. A multiple linear regression analysis confirmed ambient Cr(VI) concentrations were significantly affected by meteorological factors (i.e., temperature and humidity) and reactive gases/particles (i.e., O3, Fe and Mn). © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81072
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Exposure Science, Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Road, Piscataway, NJ 08854, United States; Department of Building Science, Tsinghua University, Beijing 100084, China; Meadowlands Environmental Research Institute, Lyndhurst, NJ, United States
Recommended Citation:
Yu C,H,, Huang L,et al. Characterization of concentration, particle size distribution, and contributing factors to ambient hexavalent chromium in an area with multiple emission sources[J]. Atmospheric Environment,2014-01-01,94