Abstract
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 used the USEPA multimedia model to estimate lifetime exposure and cancer risk. Analytical results show that average atmospheric PCDD/Fs concentrations were 149–285 fg I-TEQ/m 3 and deposition flux was 0.57–116 pg I-TEQ/m 2 -d.
Highlights
Polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are environmental pollutants comprising a group of dangerous chemicals that are potentially highly toxic
Site A was on the roof of an office building at the Waelz plant; Site B was close to a duck farm located about 1.8 km directly downwind from the plant; Site C was near a junior high school about 3.5 km from the plant; and site D was close to a primary school about 4.2 km upwind of the plant
The atmospheric PCDD/Fs concentrations measured near the Waelz plant were considerably higher than those measured in other countries
Summary
Polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are environmental pollutants comprising a group of dangerous chemicals that are potentially highly toxic. 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. This study combined air dispersion models, ambient air sampling, and biomonitoring data to determine the PCDD/Fs exposure level of residents near this Waelz plant and their health risk.
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