BBQ charcoal combustion as an important source of trace metal exposure to humans

To provide information about charcoal combustion as an important source of atmospheric trace metal pollution, 11 charcoal products were combusted and PM 10 filter samples were collected. The PM-bound metal elements were extracted by microwave acid digestion and analyzed by ICP-AES. The concentration...

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Bibliographic Details
Published in:Journal of hazardous materials 2010-04, Vol.176 (1), p.932-937
Main Authors: Susaya, Janice, Kim, Ki-Hyun, Ahn, Ji-Won, Jung, Myung-Chae, Kang, Chang-Hee
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Air Pollutants - standards
Applied sciences
Arsenic - analysis
Atmospheric pollution
Barbecuing
Charcoal
Charcoal - toxicity
Combustion
Cooking
Emission
Environmental Exposure
Environmental Monitoring
Exact sciences and technology
Global environmental pollution
Humans
Incineration
Inhalation Exposure - analysis
Inhalation Exposure - standards
Metal
Metals, Heavy - analysis
Pollution
Risk Assessment
United States
United States Government Agencies - standards
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Summary:To provide information about charcoal combustion as an important source of atmospheric trace metal pollution, 11 charcoal products were combusted and PM 10 filter samples were collected. The PM-bound metal elements were extracted by microwave acid digestion and analyzed by ICP-AES. The concentrations of trace metal elements ranged from a few to 10 5 ng m −3 in the following order of magnitude: Zn > Pb > Mg > Ba > Cu > V > Cr > Co > Cd > Ni > Mn > Se > As. Emissions of most elements from charcoal combustion were high compared to other sources. In case of Cd, Co, and Ni, their concentrations exceeded the inhalation minimum risk levels (MRLs) of the United States Agency for Toxic Substances and Disease Registry (US-ATSDR) for chronic duration exposure by a factor of 30, 3.9, and 2.2, respectively. Likewise, Cd levels exceeded the US-ATSDR MRLs for acute-duration exposure by a factor of 10, while those of Pb and Cd exceeded air quality guideline (AQG) of the World Health Organization (WHO) by a factor of 29 and 59, respectively. Mn levels also exceeded the United States Environmental Protection Agency (US EPA) Reference Air Concentrations (RfCs) by a factor of 2.7. This study shows that barbecue charcoal combustion can be an important source of trace metal emissions to the atmosphere with potential health risks.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2009.11.129