Comparison of hybrid receptor models to locate PCB sources in Chicago

Hsu, Ying-Kuang; Holsen, Thomas M.; Hopke, Philip K.

doi:10.1016/s1352-2310(02)00886-5

Cited by 441 publications

(209 citation statements)

References 14 publications

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“…4 Fitted probability distributions of carcinogenic risk associated with ∑ 32 PCBs a inhalation and b dermal exposure, to heptachlor c inhalation and d dermal exposure, and ∑ 14 PAHs e inhalation and f dermal exposure measured at a suburban site. Higher chronic exposure concentrations may occur in industrial regions, urban locations, and areas around waste disposal/destruction facilities (Hsu et al 2003). The total PCB concentrations of 3370 pg/m 3 (summer) and 1164 pg/m 3 (winter) were measured at an industrial site in Aliaga industrial area near İzmir (Bozlaker et al 2008), and 2119 pg/m 3 (summer) and 1716 pg/m 3 (winter) in urban İzmir, ).…”

Section: Exposure and Risk Assessmentmentioning

confidence: 98%

POPs in a major conurbation in Turkey: ambient air concentrations, seasonal variation, inhalation and dermal exposure, and associated carcinogenic risks

Ugranli

Güngörmüş

Kavcar

et al. 2016

Environ Sci Pollut Res

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Semi-volatile organic compounds were monitored over a whole year, by collection of gas and particle phases every sixth day at a suburban site in Izmir, Turkey. Annual mean concentrations of 32 polychlorinated biphenyls (∑ 32 PCBs) and 14 polycyclic aromatic hydrocarbons (∑ 14 PAHs) were 348 pg/m 3 and 36 ng/m 3 , respectively, while it was 273 pg/m 3 for endosulfan, the dominant compound among 23 organochlorine pesticides (OCPs). Monte Carlo simulation was applied to the USEPA exposure-risk models for the estimation of the population exposure and carcinogenic risk probability distributions for heating and non-heating periods. The estimated population risks associated with dermal contact and inhalation routes to ∑ 32 PCBs, ∑ 14 PAHs, and some of the targeted OCPs (α-hexachlorocyclohexane (α-HCH), β-hexachlorocyclohexane (β-HCH), heptachlor, heptachlor epoxide, α-chlordane (α-CHL), γ-chlordane (γ-CHL), and p,p′-dichlorodiphenyltrichloroethane (p,p′-DDT)) were in the ranges of 1.86 × 10 −16 -7.29 × 10 −9 and 1.38 × 10 −10 -4.07 × 10 −6 , respectively. The inhalation 95th percentile risks for ∑ 32 PCBs, ∑ 14 PAHs, and OCPs were about 6, 3, and 4-7 orders of magnitude higher than those of dermal route, respectively. The 95th percentile inhalation risk for ∑ 32 PCBs and OCPs in the non-heating period were 1.8-and 1.2-4.6 folds higher than in the heating period, respectively. In contrast, the 95th percentile risk levels for ∑ 14 PAHs in the heating period were 4.3 times greater than that of non-heating period for inhalation, respectively. While risk levels associated with exposure to PCBs and OCPs did not exceed the acceptable level of 1 × 10 −6 , it was exceeded for 47 % of the population associated with inhalation of PAHs with a maximum value of about 4 × 10 −6 .

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Section: Exposure and Risk Assessmentmentioning

confidence: 98%

POPs in a major conurbation in Turkey: ambient air concentrations, seasonal variation, inhalation and dermal exposure, and associated carcinogenic risks

Ugranli

Güngörmüş

Kavcar

et al. 2016

Environ Sci Pollut Res

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“…Weighted concentration fields show concentration gradients across potential sources. This method helps determine the relative significance of potential sources (Hsu et al, 2003;Cheng et al, 2013).…”

Section: Meteorological Data and Backward Trajectory Calculationmentioning

confidence: 99%

Monsoon-facilitated characteristics and transport of atmospheric mercury at a high-altitude background site in southwestern China

Hui

Lin

et al. 2016

Atmos. Chem. Phys.

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Abstract. To better understand the influence of monsoonal climate and transport of atmospheric mercury (Hg) in southwestern China, measurements of total gaseous mercury (TGM, defined as the sum of gaseous elemental mercury, GEM, and gaseous oxidized mercury, GOM), particulate bound mercury (PBM) and GOM were carried out at Ailaoshan Station (ALS, 2450 m a.s.l.) in southwestern China from May 2011 to May 2012. The mean concentrations (± SD) for TGM, GOM and PBM were 2.09 ± 0.63, 2.2 ± 2.3 and 31.3 ± 28.4 pg m −3 , respectively. TGM showed a monsoonal distribution pattern with relatively higher concentrations (2.22 ± 0.58 ng m −3 , p = 0.021) during the Indian summer monsoon (ISM, from May to September) and the east Asia summer monsoon (EASM, from May to September) periods than that (1.99 ± 0.66 ng m −3 ) in the non-ISM period. Similarly, GOM and PBM concentrations were higher during the ISM period than during the non-ISM period. This study suggests that the ISM and the EASM have a strong impact on longrange and transboundary transport of Hg between southwestern China and south and southeast Asia. Several high TGM events were accompanied by the occurrence of northern wind during the ISM period, indicating anthropogenic Hg emissions from inland China could rapidly increase TGM levels at ALS due to strengthening of the EASM. Most of the TGM and PBM events occurred at ALS during the non-ISM period. Meanwhile, high CO concentrations were also observed at ALS, indicating that a strong south tributary of westerlies could have transported Hg from south and southeast Asia to southwestern China during the non-ISM period. The biomass burning in southeast Asia and anthropogenic Hg emissions from south Asia are thought to be the source of atmospheric Hg in remote areas of southwestern China during the non-ISM period.

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“…It would provide the spatial pattern of the potential sources of aerosols arriving at a receptor location (Seibert et al, 1994;Hsu et al, 2003;Vinoj et al, 2010). Here, the weights have been given to each of the trajectories arriving at the receptor site on the basis of the mean value of the measured aerosol parameter (AOD in this case).…”

Section: Cwt Analysis and Potential Source Regionsmentioning

confidence: 99%

Multi-year investigations of aerosols from an island station, Port Blair, in the Bay of Bengal: climatology and source impacts

et al. 2012

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Abstract. Long-term measurements of spectral aerosol optical depth (AOD) using multi-wavelength solar radiometer (MWR) for a period of seven years (from 2002 to 2008) from the island location, Port Blair (11.63 • N, 92.7 • E, PBR) in the Bay of Bengal (BoB), along with the concurrent measurements of the size distribution of near-surface aerosols, have been analyzed to delineate the climatological features of aerosols over eastern BoB. In order to identity the contribution of different aerosol types from distinct sources, concentration weighted trajectory (CWT) analysis has been employed. Climatologically, AODs increase from January to reach peak value of ∼0.4 (at 500 nm) in March, followed by a weak decrease towards May. Over this general pattern, significant modulations of intra-seasonal time scales, caused by the changes in the relative strength of distinctively different sources, are noticed. The derivative (α ) of the Angstrom wavelength exponent α in the wavelength domain, along with CWT analysis, are used to delineate the different important aerosol types that influence this remote island. Corresponding changes in the aerosol size distributions are inferred from the numerical inversion of the spectral AODs as well from (surface) measurements. The analyses revealed that advection plays a major role in modifying the aerosol properties over the remote island location, the potential sources contributing to the accumulation mode (coarse mode) aerosols over eastern BoB being the East Asia and South China regions (Indian mainland and the oceanic regions).

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Comparison of hybrid receptor models to locate PCB sources in Chicago

Cited by 441 publications

References 14 publications

POPs in a major conurbation in Turkey: ambient air concentrations, seasonal variation, inhalation and dermal exposure, and associated carcinogenic risks

POPs in a major conurbation in Turkey: ambient air concentrations, seasonal variation, inhalation and dermal exposure, and associated carcinogenic risks

Monsoon-facilitated characteristics and transport of atmospheric mercury at a high-altitude background site in southwestern China

Multi-year investigations of aerosols from an island station, Port Blair, in the Bay of Bengal: climatology and source impacts

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