Characterization of TSP-bound n-alkanes and polycyclic aromatic hydrocarbons at rural and urban sites of Tianjin, China

Wu, Shi; Tao, Shu; Zhang, Zhi-Huan; Lan, Tian; Zuo, Qiting

doi:10.1016/j.envpol.2006.08.020

Cited by 49 publications

(22 citation statements)

References 29 publications

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“…In this study, the ratio FL/Pyr, IND/IND + BghiP, BaP/BghiP and BaP/BaP + CHR of the six sampling sites range from 0.94 (DL) to 1.27 (SZ), 0.48 (BC) to 0.54 (HX), 1.10 (HX) to 1.25 (BC) and 0.39 (DL) to 0.43 (DXC and BC) in heating period respectively (Table 5). The ratio FL/Pyr, IND/IND + BghiP and BaP/ BghiP are approaching those reported in Tianjin and Seoul (Parka et al, 2002;Wu et al, 2007). The ratios FL/Pyr and BaP/BghiP indicate coal combustion may be the main source of PAHs at all sampling sites in heating period.…”

Section: Potential Sources Of Pahssupporting

confidence: 58%

Characterization and Source Identification of PM10-bound Polycyclic Aromatic Hydrocarbons in Urban Air of Tianjin, China

Shi

Peng²,

et al. 2010

Aerosol Air Qual. Res.

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Spatial variations were predominantly due to the different strengths of source emission. The total PAHs concentrations at Dongli Monitoring Station (DL) site and Beichen Science and Technology Park (BC) site were higher than those at other four sites in heating period, while those at Meijiang community (MJ) site and Beichen Science and Technology Park (BC) site were higher in no-heating period. Higher PAHs concentrations during heating period and lower concentrations during no-heating period were observed at the six sampling sites, which may be caused by the stronger emissions from stationary combustion sources in heating period and the quicker air dispersion, washout effects, photodegradation and higher percentage in the air in vapor phase in no-heating period. The PAHs concentrations in gaseous phase were predicted with gas/particle partition model, and the BaP and BaP equivalency results indicated that the health risk of gas and particle phase PAHs to human in Tianjin were higher than that in other cities. The contributions from potential sources to PAHs in PM 10 were estimated by the diagnostic ratios between PAHs and principal component analysis (PCA). In whole sampling period, coal combustion was found to the predominant contributor of PM 10 -bound PAHs, followed by vehicles emission and wood combustion.

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Section: Potential Sources Of Pahssupporting

confidence: 58%

Characterization and Source Identification of PM10-bound Polycyclic Aromatic Hydrocarbons in Urban Air of Tianjin, China

Shi

Peng²,

et al. 2010

Aerosol Air Qual. Res.

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“…CPI 1 and CPI 2 values varied between 0.72-2.8 and 0.98-3.2 with arithmetic means of 1.4 ± 0.38 and 1.7 ± 0.44, respectively, suggesting n-alkanes in residential ACFD were predominately from anthropogenic activities combining biological materials. Human activities related sources of n-alkanes contain CPI values close to unit, whereas natural sources from vegetation generally exhibit high CPI values (> 3.0) (Bi et al, 2005a;Wu et al, 2007). Significantly higher CPI 2 values than CPI 1 suggest that long-chain alkanes in residential ACFD were more dominated by biogenic sources when compared with short-chain homologues.…”

Section: N-alkanes In Residential Acfdmentioning

confidence: 94%

The Effects of Height on the Accumulation of n-Alkanes and Polycyclic Aromatic Hydrocarbons (PAHs) in Air-Conditioning Filter Dust from High-Rise Apartments

Wang

Qian

Liu

et al. 2017

Aerosol Air Qual. Res.

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To assess the effect of floor levels of high-rise apartment buildings on the accumulation of contaminants in indoor environment, residential air-conditioner filter dust (ACFD) samples from the 1 st , 10 th , 20 th and 30 th floors of a high-rise apartment building were collected for the determination of n-alkanes and polycyclic aromatic hydrocarbons (PAHs). The results show that both n-alkanes and PAHs in the residential ACFD were ubiquitous but varied greatly in concentrations. The total concentrations of 27 n-alkanes (Σ 27 AK) and 16 PAHs (Σ 16 PAH) ranged from 1.35 to 9290 µg g -1 and 278-34200 ng g -1 , respectively. Source apportionment revealed that n-alkanes were from mixed sources combining fossil fuel combustion, natural emission and solid biomass burning, but PAHs were mainly from indoor sources. Furthermore, the diagnostic ratio of paired low weight molecular PAH species may change during transportation and accumulation. Significantly higher concentrations of Σ 27 AK and Σ 16 PAH were observed in the samples from low floor levels (the 1 st and 10 th floors) compared to those from high floor levels (the 20 th and 30 th floors). The results of classification and regression tree analysis clearly suggested floor level is the most important factor influencing the accumulation of Σ 27 AK and Σ 16 PAH in the ACFD. Our findings imply that people living on lower floor levels have greater exposure risks to PAHs associated with indoor dust.

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“…Although its reliability is still widely debated, 35 it is extensively employed. 32,36,37,[56][57][58] Different sources release PAH in characteristic proportions that are not affected by vapor-to-particulate phase partitioning. [58][59][60] …”

Section: Statistics and Pah Diagnostic Ratiosmentioning

confidence: 99%

Quantification and source identification of atmospheric particulate polycyclic aromatic hydrocarbons and their dry deposition fluxes at three sites in Salvador Basin, Brazil, impacted by mobile and stationary sources

Rocha¹,

Lopes²,

Pereira³

et al. 2009

J. Braz. Chem. Soc.

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O presente trabalho apresenta o estudo sobre 16 HPAs prioritários em material particulado atmosférico de três sítios próximos a Salvador-BA: (i) Estação da Lapa, estação de ônibus da Região Metropolitana de Salvador; (ii) Porto de Aratu, impactado por intenso movimento de matérias-primas e (iii) Bananeira, localizado na Ilha de Maré, vilarejo que tem como principais atividades a pesca e artesanato. ) apresentou nível mais elevado na Lapa. As fontes de HPAs nos sítios estudados foram principalmente de origem antrópica, tais como veículos de pequeno e grande portes, carregamentos do porto, ressuspensão de partículas do solo, queima de diesel das embarcações e a queima de carvão e madeira para produção de energia.The present work has aimed to determine the 16 US EPA priority PAH atmospheric particulate matter levels present in three sites around Salvador, Bahia: (i) Lapa bus station, strongly impacted by heavy-duty diesel vehicles; (ii) Aratu harbor, impacted by an intense movement of goods, and (iii) Bananeira village on Maré Island, a non vehicle-influenced site with activities such as handcraft work and fisheries. Results indicated that ) is the PAH with highest concentration in samples from Aratu harbor and Bananeira and CRY (0.075-6.85 ng m -3 ) presented higher concentrations at Lapa station. PAH sources from studied sites were mainly of anthropogenic origin such as gasoline-fueled light-duty vehicles and diesel-fueled heavy-duty vehicles, discharges in the port, diesel burning from ships, dust ressuspension, indoor soot from cooking, and coal and wood combustion for energy production.

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Characterization of TSP-bound n-alkanes and polycyclic aromatic hydrocarbons at rural and urban sites of Tianjin, China

Cited by 49 publications

References 29 publications

Characterization and Source Identification of PM10-bound Polycyclic Aromatic Hydrocarbons in Urban Air of Tianjin, China

Characterization and Source Identification of PM10-bound Polycyclic Aromatic Hydrocarbons in Urban Air of Tianjin, China

The Effects of Height on the Accumulation of n-Alkanes and Polycyclic Aromatic Hydrocarbons (PAHs) in Air-Conditioning Filter Dust from High-Rise Apartments

Quantification and source identification of atmospheric particulate polycyclic aromatic hydrocarbons and their dry deposition fluxes at three sites in Salvador Basin, Brazil, impacted by mobile and stationary sources

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