Dry deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in ambient air

Shih, Margaret; Lee, Wei-Shan; Chang-Chien, Guo-Ping; Wang, Lin‐Chi; Hung, Chia-Yang; Lin, Kuo-Ching

doi:10.1016/j.chemosphere.2005.04.064

Cited by 55 publications

(64 citation statements)

References 21 publications

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“…When comparing atmospheric concentrations between the two seasons, the total I-TEQ concentration in fall was higher by a factor of 1.6-1.8 than in spring, probably (Shih et al, 2006;Lin et al, 2010;Huang et al, 2011). OCDD was the most abundant congener found in all atmospheric samples with an average contribution of 21-27% of the total PCDD/F concentration at sites I, A, and R, and for 42% at site B followed by 1,2,3,4,6,7,OCDF,and 1,2,3,4,6,7, Note that the total PCDF concentration was significantly higher than PCDDs except at site B in the fall, probably because of its high proportion of OCDD (42%).…”

Section: Ambient Air Pcdd/f and Pcb Concentrationsmentioning

confidence: 99%

“…Due to the lack of measured data for the dry deposition velocities of total PCDD/Fs and PCBs, average deposition velocities of total PCDD/Fs and PCBs in the ambient air of southern Taiwan proposed by Shih et al (2006) and Lee et al (1996b), which were 0.42 and 0.28 (cm/s), respectively, were adopted herein. Values were also adopted in this study for the calculation of deposition fluxes of total PCDD/Fs and PCBs.…”

Section: Atmospheric Dry Depositionmentioning

confidence: 99%

“…Shih et al (2006) measured the atmospheric dry deposition flux of total PCDD/Fs in a rural area of Taiwan using the smooth plate with a sharp leading edge, and the averaged flux of total PCDD/Fs was 50 pg/m 2 -day. The impact of dry/wet PCDD/F depositions from the ambient air and the electric arc furnace dust treatment plant in Taiwan has been presented (Lee et al, 2009).…”

Section: Polychlorinatedmentioning

confidence: 99%

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Atmospheric Dry Deposition of Polychlorinated Dibenzo-p-Dioxins/Dibenzofurans (PCDD/Fs) and Polychlorinated Biphenyls (PCBs) in Southern Taiwan

Lin

et al. 2012

Aerosol Air Qual. Res.

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Dry deposition is one of the major routes by which air pollutants enter the ecosystem, and thus this study investigated the dry deposition characteristics of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) and biphenyls (PCBs) in the ambient air of industrial, urban, and rural areas in southern Taiwan from November 2010 to May 2011. Average dry deposition fluxes of total PCDD/Fs and PCBs in the ambient air of four sites were 157-544 pg/m 2 -day (8.30-27.5 pg I-TEQ/m 2 -day) and 289-1010 pg/m 2 -day (0.540-1.94 pg WHO-TEQ/m 2 -day), respectively. The results showed that particle phase depositions dominated the dry deposition processes for the removal of PCDD/Fs and PCBs from the atmosphere, and the atmospheric deposition flux in the cold season tended to be higher than that during the warm season. The dry deposition velocity of individual PCDD/Fs (0.031-0.546 cm/s) increased as the number of chlorinated substitutes increased, which were similar to those measured or predicted in other Asian countries. Similar patterns of dry deposition velocities were observed for individual PCBs (0.069-3.38 cm/s), due to the fact that low chlorinated PCBs are predominant in gas phase and have lower deposition velocities.

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Section: Ambient Air Pcdd/f and Pcb Concentrationsmentioning

confidence: 99%

Section: Atmospheric Dry Depositionmentioning

confidence: 99%

Section: Polychlorinatedmentioning

confidence: 99%

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Atmospheric Dry Deposition of Polychlorinated Dibenzo-p-Dioxins/Dibenzofurans (PCDD/Fs) and Polychlorinated Biphenyls (PCBs) in Southern Taiwan

Lin

et al. 2012

Aerosol Air Qual. Res.

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“…Guangzhou is located in the subtropical region, and home heating is not needed at all during the winter. This eliminates a very important emission source of PCDDs/Fs that is assumed major responsibility for the elevated winter concentration in other studied areas (Eduljee and Dyke, 1996;Moon et al, 2005;Shih et al, 2006). MSWIs and industrial waste incinerators (IWIs) in China are still a minor option for the disposal of solid wastes in China (Ju and Sun, 2004).…”

Section: Possible Mechanisms For the Winter Effect On Formation Of Pcmentioning

confidence: 99%

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

Deng

Peng

Ren

et al. 2011

Atmospheric Environment

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“…The atmospheric PCDD/Fs concentrations measured near the Waelz plant (especially at Site A) were considerably higher than those measured in other countries. Compared to that in other studies in Taiwan (Chi et al, 2009) and urban area (3.1-19 pg I-TEQ/m 2 -d) in southern Taiwan (Shih et al, 2006). We speculate that the high deposition flux of PCDD/Fs at site A is due to the strong re-suspension of fly ash particles from the storage area at the Waelz plant (Fig.…”

Section: Cancer Mortality Of the Population In Study Areamentioning

confidence: 50%

Health Risk from Exposure to PCDD/Fs from a Waelz Plant in Central Taiwan

Tsai¹,

Mao

Hsien

et al. 2014

Aerosol Air Qual. Res.

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This study combined ambient air sampling and biomonitoring data to determine the PCDD/Fs exposure levels and health risk for residents near a Waelz plant. In total, 457 adults completed questionnaires and 48 subjects also gave blood samples. We The estimated lifetime average daily doses (LADDs) were 1.20 and 1.09 pg WHO1998-TEQ/kg/d, which are below the tolerable daily intake (TDI) range of 1-4 pg TEQ/kg bw (World Health Organization). However, the concentration was higher than concentrations for the general population in Taiwan. The USEPA multimedia model showed that the median of lifetime exposure to PCDD/Fs was 1.90 × 10 -2 pg/kg bw/day and 3.19 × 10 -2 pg/kg bw/day for Area U (upwind site) and Area D (downwind site), respectively. The carcinogenic risk was 2.96 × 10 -6 (95th percentile = 1.61 × 10 -5 ), and 4.97 × 10 -6 (95th percentile = 2.59 × 10 -5 ) for Area U and Area D, respectively. In summary, residents near the plant had a higher body burden of PCDD/Fs than the general population in Taiwan. The health risk from exposure, including cancer mortality caused by chronic exposure to PCDD/Fs, needs to be clarified further.

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Dry deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in ambient air

Cited by 55 publications

References 21 publications

Atmospheric Dry Deposition of Polychlorinated Dibenzo-p-Dioxins/Dibenzofurans (PCDD/Fs) and Polychlorinated Biphenyls (PCBs) in Southern Taiwan

Atmospheric Dry Deposition of Polychlorinated Dibenzo-p-Dioxins/Dibenzofurans (PCDD/Fs) and Polychlorinated Biphenyls (PCBs) in Southern Taiwan

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

Health Risk from Exposure to PCDD/Fs from a Waelz Plant in Central Taiwan

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