Gas/particle partitioning of polychlorinated dibenzo-p-dioxins and dibenzofurans in atmosphere; evaluation of predicting models

Oh, Jeong‐Eun; Choi, Jinsoo; Chang, Yoon Seok

doi:10.1016/s1352-2310(01)00201-1

Cited by 81 publications

(42 citation statements)

References 19 publications

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“…The outcomes could be quite apparent, for instance, between reference years 1987 and 2000, there was approximately 89% reduction in the PCDD/F released to the environment of the United States from all known sources combined (US EPA, 2006), and also about 84% reduction in PCDD/F emissions from 327.4 g I-TEQ in 2002 to 52.6 g I-TEQ in 2013 in Taiwan. PCDD/Fs are semi-volatile compounds, and after being emitted from combustion sources, they are distributed in both gaseous and particle phases in the atmosphere (Li et al, 2008b;Chen et al, 2011a;Kuo et al, 2015). The partitioning between the two phases is highly dependent on their vapor pressure and the ambient temperature, with more molecules volatizing into the gaseous phase as temperature increases (Fiedler, 1996;Oh et al, 2001). PCDD/Fs are lipophilic persistent organic compounds, which bioaccumulate in the fatty tissues and biomagnify within the food chain (Rolff et al, 1993;Henny et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

An Overview of PCDD/F Inventories and Emission Factors from Stationary and Mobile Sources: What We Know and What is Missing

Cheruiyot

Lee

Yan

et al. 2016

Aerosol Air Qual. Res.

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This overview attempts to outline what we currently know about the PCDD/F emission inventories and the source categories therein. Besides the best available control techniques, suggestions are offered on how to reduce the PCDD/F emission factors and emission quantity of some important PCDD/F emission sources. The PCDD/F combustion sources can be classified as either stationary or mobile or minimally/uncontrolled combustion sources. The major stationary sources of PCDD/Fs are metal production processes, waste incineration, heat and power plants, and fly ash treatment plant. Crematories, vehicles, residential boilers and stoves are of key concern due to their proximity to residential areas and their relatively lower lying stacks and exhaust gases, which may result in great impact to their surrounding environment.Moreover, we offered our perspectives on how to improve the quality and representative of the PCDD/F emission factors to attain PCDD/F inventories which correspond more to reality. These points of view include: (1) PCDD/F contributions during start-up procedures of MSWIs should be considered, (2) the sampling times of stack flue gases for EAFs and secondary metal smelters should correspond to whole smelting process stages, (3) longer flue gas sampling time should be executed for power plants, (4) direct exhaust samplings from tailpipes for mobile sources, (5) development of an open burn testing facility that can reflect the real open burning conditions, and (6) long-term sampling techniques like AMESA are suggested to used exclusively for the most contributed PCDD/F stationary sources.

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Section: Introductionmentioning

confidence: 99%

An Overview of PCDD/F Inventories and Emission Factors from Stationary and Mobile Sources: What We Know and What is Missing

Cheruiyot

Lee

Yan

et al. 2016

Aerosol Air Qual. Res.

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“…However, the calculated particulate fractionation of 2,3,7,8-substituted congeners was not highly sensitive to the K p (as well as K oa ) calculation methods. Oh et al (2001) found that for the calculation of the particulate phase fraction, the K oa -based method is more compatible with experimental data than K p -based method. Unfortunately in this study, it was not possible to perform a direct comparison between measured and estimated K p (particle ?…”

Section: Gas-particle Partitioning Of Pcdd/fsmentioning

confidence: 77%

“…For the analysis of vapor-phase PCDD/Fs, PUF samples were transferred to a Soxhlet extraction receptacle, spiked with 10 lL of a mixture of 13 C labeled PCDD/F compounds (in the concentration range of 100-200 ng/mL) and extracted with toluene for 16 h. Samples were subsequently cleaned up using silica gel (15 mm ID 9 30 cm column) and acid alumina (10 mm ID 9 30 cm column). Pretreatment of samples was made following the analytical procedure of Oh et al (2001).…”

Section: Sampling and Chemical Analysis For Dioxinsmentioning

confidence: 99%

Partitioning of dioxins (PCDDs/Fs) in ambient air at urban residential locations

Rahman

Shon

et al. 2013

Int. J. Environ. Sci. Technol.

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3 , respectively. The concentration profile of individual species was dominated by the 2,3,4,7,8-PeCDF isomer, which contributed approximately 36 % of the RPCDD/Fs value. The observed temporal trends in PCDD/F concentrations were characterized by relative enhancement in the winter and spring. The relative contribution of different sources, when assessed by principal component analysis, is explained by the dominance of vehicular emissions along with coal (or gas) burning as the key source of ambient PCDD/Fs in the residential areas studied.

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“…A previous study (Oh et al, 2001) has indicated that between 70% and 80% of PCDD/Fs in the atmosphere are essentially bounded to particles. These solid-phase PCDD/Fs are brought into the atmosphere by the wind and eventually settle into water bodies and other receiving areas in the environment via either a dry or wet deposition mechanism.…”

Section: Introductionmentioning

confidence: 96%

Increase of Ambient PCDD/F Concentrations in Northern Taiwan during Asian Dust Storm and Winter Monsoon Episodes

Hsien¹,

Chou

Peng

et al. 2014

Aerosol Air Qual. Res.

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In the spring, Asian dust storms that originate in the deserts of Mongolia and China eventually reach the populated areas of East Asia. The dust storm particles usually contain diverse organic matter and nutrients that may have an adverse effect on human health. In winter, northeast monsoon episodes that originate in the mainland China not only bring cold air but also transport dust and air pollutants to Taiwan over long distances. Based on the above, the presence of persistent organic pollutants (POPs), including polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), in the suspended particles undergoing long-range transport needs to be investigated. In this study, the atmospheric concentrations of PCDD/Fs were monitored and investigated during an Asian dust storm episode and northeast monsoon episode in northern Taiwan. The sampling results indicate that the atmospheric PCDD/Fs observed at two remote sampling sites ranged from 7.46 ± 0.7 to 37. rd December 2008, respectively. Specifically, higher levels of PCDFs (by 70%-76%) were measured in northern Taiwan during these long-range transport periods. As no specific dioxin emission sources exist within 20 km of our sampling sites, the increase in PCDD/F concentrations observed at these two remote sampling sites is likely to be related to the Asian dust storm and northeast monsoon episodes and the pollutants would seem to have come from mainland China.

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Gas/particle partitioning of polychlorinated dibenzo-p-dioxins and dibenzofurans in atmosphere; evaluation of predicting models

Cited by 81 publications

References 19 publications

An Overview of PCDD/F Inventories and Emission Factors from Stationary and Mobile Sources: What We Know and What is Missing

An Overview of PCDD/F Inventories and Emission Factors from Stationary and Mobile Sources: What We Know and What is Missing

Partitioning of dioxins (PCDDs/Fs) in ambient air at urban residential locations

Increase of Ambient PCDD/F Concentrations in Northern Taiwan during Asian Dust Storm and Winter Monsoon Episodes

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