Background Dioxins in House Dusts

O'Connor, Rod; Sabrsula, Justin

doi:10.1080/15275920500194506

Cited by 12 publications

(7 citation statements)

References 9 publications

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“…Concentrations were low compared with most studies reviewed 6,14,25 and also lower than those of the study of O'Connor and Sabrsula 26 In a ranking of indoor semi-volatile compounds in dust in homes based on literature reported toxicity, Bonvallot et al, 7 , considered PCBs found in household dust a risk factor for infants and children, although the concentrations used in the ranking were those by Harrad et al 6 which were substantially higher than those reported here.…”

Section: Discussioncontrasting

confidence: 61%

Polychlorinated biphenyl (PCB) and dioxin concentrations in residential dust of pregnant women

Hinwood

Callan

Heyworth

et al. 2014

Environ. Sci.: Processes Impacts

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Polychlorinated biphenyls (PCBs) and dioxins are well known for their persistence in the environment. PCBs can be found in the residential environment long after the use of these chemicals in domestic products and industrial processes has ceased. Dioxins have been assessed in Australia as being of very low concentrations. Despite concerns about residential dust as a source of human exposure to persistent chemicals, there has been limited testing of PCBs and dioxins in dust in Australia. As part of an assessment of maternal exposure to a variety of persistent toxic substances, we analysed 30 residential dust samples from a variety of geographical settings for their dioxin and PCB concentrations. PCBs were found in most samples, the median and range concentrations (pg g(-1)) of dominant congeners of PCB were as follows: PCB118 (315; <35.0-29 000), PCB105 (130; 14.0-16 000) and PCB156 (440; <5.00-2800). Dioxin concentrations were generally low with median concentrations for the total sum of dioxin-like polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) of 3.75 pg g(-1) each. There was a very high percentage of non-detects. Concentrations of both PCBs and dioxins were low compared with most studies reporting residential dust concentrations internationally. Age of dwelling was the only factor observed to influence both PCB congener concentrations and dioxin isomers in multivariate regression analyses. No other housing or sociodemographic variables, including proximity to industry, were important predictors in multivariate linear regression models.

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Section: Discussioncontrasting

confidence: 61%

Polychlorinated biphenyl (PCB) and dioxin concentrations in residential dust of pregnant women

Hinwood

Callan

Heyworth

et al. 2014

Environ. Sci.: Processes Impacts

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“…The percentage of 2,3,7,8-TCDD compared to total TEQ was highest for the schoolyard (14%) and the market (14%). When compared to house dust, the TEQ values of the workshops were 2 times higher than that of dust from U.S. homes and similar to average values found in houses in Germany in an area known to have high dioxin contamination…”

Section: Resultsmentioning

confidence: 90%

Polybrominated Diphenyl Ethers and Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Surface Dust at an E-Waste Processing Site in Southeast China

Leung

Zheng

et al. 2011

Environ. Sci. Technol.

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Surface dust collected from printed circuit board recycling workshop floors, roads, a schoolyard, and an outdoor food market in Guiyu, China, a village intensely involved in e-waste processing, were investigated for levels of polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). PBDE concentrations in dust from workshop-floors (14,800 ± 5130 ng/g) and on adjacent roads to the workshops (24,900 ± 31,600 ng/g) were highest among the study sites whereas PCDD/F concentrations were highest at the schoolyard (1316 pg/g) and in a workshop (1264 pg/g). Analyses of <2 mm and <53 μm dust particle sizes did not show any significant differences in PBDE concentrations. The cytotoxicity was investigated using two bioassays: 7-ethoxyresorufin O-deethylase (EROD-TEQ) and MTT. EROD-TEQ values ranged from 260 to 432 pg/g, with the highest in dust collected from a street lined with workshops. Using the MTT assay, cytoxicity of dust from the plastic chips drying district in Guiyu was higher than dust from the other sites investigated. This study showed that the primitive recycling of e-waste introduced toxic pollutants into the environment which are potentially harmful to the health of e-waste workers and local residents, especially children, and warrants an urgent investigation into POPs related health impacts.

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“…O'Connor and Sabrsula (2) reported results of measurements of PCDDs and PCDFs (no PCBs were measured) in 14 house dust samples collected from 12 homes in a single community in rural Mississippi. This community was selected because it was not believed to be unduly polluted by airborne dioxins.…”

Section: Discussionmentioning

confidence: 99%

An Investigation of Homes with High Concentrations of PCDDs, PCDFs, and/or Dioxin-Like PCBs in House Dust

Franzblau

Zwica

Knutson

et al. 2009

Journal of Occupational and Environmental Hygiene

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As part of the University of Michigan Dioxin Exposure Study, the 29 congeners of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and dioxin-like polychlorinated biphenyls that have World Health Organization consensus toxic equivalency factors were measured in house dust from 764 homes using a population-based sampling design over selected regions in five Michigan counties. Twenty homes had a total toxic equivalency in house dust that was more than 2.5 standard deviations above the mean (i.e., defined to be outliers). This follow-up investigation describes the outlier house dust measurements and corresponding soil measurements and explores possible sources of these toxins in house dust. The congener distributions in the house dust outliers varied and were dominated (i.e., >50% of the total toxic equivalency) by either polychlorinated dibenzo-p-dioxins (n = 9), polychlorinated dibenzofurans (n = 1), or dioxin-like polychlorinated biphenyls (n = 9). Likely sources of contamination of house dust were identified in only three cases. In two cases, dust contamination appeared to be related to contaminated soil adjacent to the home; in one case, contamination was related to a source within the home (a carpet pad). In most cases, the source(s) of contamination of house dust could not be identified but appeared likely to be related to uncharacterized sources within the homes.

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Background Dioxins in House Dusts

Cited by 12 publications

References 9 publications

Polychlorinated biphenyl (PCB) and dioxin concentrations in residential dust of pregnant women

Polychlorinated biphenyl (PCB) and dioxin concentrations in residential dust of pregnant women

Polybrominated Diphenyl Ethers and Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Surface Dust at an E-Waste Processing Site in Southeast China

An Investigation of Homes with High Concentrations of PCDDs, PCDFs, and/or Dioxin-Like PCBs in House Dust

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