Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-11943-2017 |
Particulate pollutants in the Brazilian city of Sao Paulo: 1-year investigation for the chemical composition and source apportionment | |
Pereira, Guilherme Martins1,5; Teinila, Kimmo2; Custodio, Danilo1,3,4; Santos, Aldenor Gomes5,6,7; Xian, Huang8; Hillamo, Risto2; Alves, Celia A.3,4; de Andrade, Jailson Bittencourt5,6,7; da Rocha, Gisele Olimpio5,6,7; Kumar, Prashant9,10; Balasubramanian, Rajasekhar8; Andrade, Maria de Fatima11; Vasconcellos, Perola de Castro1,5 | |
2017-10-09 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Finland; Portugal; Singapore; England |
英文摘要 | Sao Paulo in Brazil has relatively relaxed regulations for ambient air pollution standards and often experiences high air pollution levels due to emissions of particulate pollutants from local sources and long-range transport of air masses impacted by biomass burning. In order to evaluate the sources of particulate air pollution and related health risks, a year-round sampling was done at the University of Sao Paulo campus (20ma.g.l.), a green area near an important expressway. The sampling was performed for PM2. 5 (<= 2: 5 mu m) and PM10 (<= 10 mu m) in 2014 through intensive (everyday sampling in wintertime) and extensive campaigns (once a week for the whole year) with 24 h of sampling. This year was characterized by having lower average precipitation compared to meteorological data, and high-pollution episodes were observed all year round, with a significant increase in pollution level in the intensive campaign, which was performed during wintertime. Different chemical constituents, such as carbonaceous species, polycyclic aromatic hydrocarbons (PAHs) and derivatives, water-soluble ions, and biomass burning tracers were identified in order to evaluate health risks and to apportion sources. The species such as PAHs, inorganic and organic ions, and monosaccharides were determined using chromatographic techniques and carbonaceous species using thermal-optical analysis. Trace elements were determined using inductively coupled plasma mass spectrometry. The risks associated with particulate matter exposure based on PAH concentrations were also assessed, along with indexes such as the benzo[a] pyrene equivalent (BaPE) and lung cancer risk (LCR). High BaPE and LCR were observed in most of the samples, rising to critical values in the wintertime. Also, biomass burning tracers and PAHs were higher in this season, while secondarily formed ions presented low variation throughout the year. Meanwhile, vehicular tracer species were also higher in the intensive campaign, suggesting the influence of lower dispersion conditions in that period. Source apportionment was performed using positive matrix factorization (PMF), which indicated five different factors: road dust, industrial emissions, vehicular exhaust, biomass burning and secondary processes. The results highlighted the contribution of vehicular emissions and the significant input from biomass combustion in wintertime, suggesting that most of the particulate matter is due to local sources, in addition to the influence of pre-harvest sugarcane burning. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412582500001 |
WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; WATER-SOLUBLE IONS ; POSITIVE MATRIX FACTORIZATION ; PM2.5 MASS CONCENTRATIONS ; ATMOSPHERIC AEROSOLS ; AIR-POLLUTION ; SEASONAL-VARIATION ; METROPOLITAN-AREA ; NITRO-PAHS ; N-ALKANES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30374 |
专题 | 地球科学 |
作者单位 | 1.Univ Sao Paulo, Inst Chem, BR-05508000 Sao Paulo, SP, Brazil; 2.Finnish Meteorol Inst, POB 503, FIN-00101 Helsinki, Finland; 3.Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal; 4.Univ Aveiro, Dept Environm, P-3810193 Aveiro, Portugal; 5.Univ Fed Bahia, INCT Energy & Environm, BR-40170115 Salvador, BA, Brazil; 6.Univ Fed Bahia, CIEnAm, BR-40170115 Salvador, BA, Brazil; 7.Univ Fed Bahia, Inst Chem, BR-40170115 Salvador, BA, Brazil; 8.Natl Univ Singapore, Dept Civil & Environm Engn, E1A 07-03, Singapore 117576, Singapore; 9.Univ Surrey, Global Ctr Clean Air Res GCARE, Dept Civil & Environm Engn, Fac Engn & Phys Sci, Guildford GU2 7XH, Surrey, England; 10.Univ Surrey, Environm Flow Res Ctr, Fac Engn & Phys Sci, Guildford GU2 7XH, Surrey, England; 11.Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci, BR-05508090 Sao Paulo, SP, Brazil |
推荐引用方式 GB/T 7714 | Pereira, Guilherme Martins,Teinila, Kimmo,Custodio, Danilo,et al. Particulate pollutants in the Brazilian city of Sao Paulo: 1-year investigation for the chemical composition and source apportionment[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(19). |
APA | Pereira, Guilherme Martins.,Teinila, Kimmo.,Custodio, Danilo.,Santos, Aldenor Gomes.,Xian, Huang.,...&Vasconcellos, Perola de Castro.(2017).Particulate pollutants in the Brazilian city of Sao Paulo: 1-year investigation for the chemical composition and source apportionment.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(19). |
MLA | Pereira, Guilherme Martins,et al."Particulate pollutants in the Brazilian city of Sao Paulo: 1-year investigation for the chemical composition and source apportionment".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.19(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论