Dioxin inhalation doses from wood combustion...

Research studies on wood smoke and other air pollution.

Dioxin inhalation doses from wood combustion...

Postby Wilberforce » Mon Dec 26, 2011 11:49 am

Dioxin inhalation doses from wood combustion in indoor cookfires
Amanda L. Northcross Corresponding Author Contact Information, E-mail The Corresponding Author,
S. Katharine Hammond, Kirk R. Smith
Department of Environmental Health Sciences, School of Public Health, University of California Berkeley, USA
Received 28 July 2011; revised 20 November 2011; Accepted 22 November 2011. Available online 9 December 2011.

http://www.sciencedirect.com/science/ar ... 1011012416


Approximately 3 billion people worldwide rely on solid biomass fuels for household cooking and space heating, and approximately 50-60% use wood, often indoors in poorly ventilated situations. Daily exposures to high concentrations of smoke from cookstoves inside kitchens create large smoke exposures for women cooks and their small children. The smoke from burning the wood fuel contains hundred of toxic compounds, including dioxins and furans some of the most toxic compounds known to science. Health effects from exposure to dioxins include reproductive and developmental problems, damage the immune system, interference with hormones and also cause cancer. This study measured concentrations of dioxins and furans in a typical Guatemalan village home during open cookfires. Measured concentrations averaged 0.32 ±0.07 ng/m3 over 31 fires. A Monte Carlo simulation was conducted using parameter estimates based on 8 years of research experience in the study area. The estimated total daily intake of 17 particle phase dioxin and furans for women, a 5-year-old child and a 6-month-old infant were 1.2(S.D.=0.4), 1.7(S.D.=0.7) and 2.0(S.D.=0.5) respectively. The 46% of babies have and estimated total daily intake (TDI) which exceed the WHO TDI guideline for dioxins and furans, 3% of women and 26% of 5-year-old children based solely inhalation of particle phase dioxins in woodsmoke from an open cooking fire. These values maybe underestimates, as they did not include gas phase concentrations or ingestion of dioxins and furans through food, which is the largest route of exposure in the developed world.

Keywords: Indoor Air Pollution; Dioxins; Furans; Household Energy
Article Outline

1.0. Introduction
2.0. Materials and Methods
2.1. Sampling
2.2. Extraction
2.3. GC/MS analysis
2.4. Statistical Analysis
3.0. Results
4.0. Discussion
5.0. Conclusion
6.0. Acknowledgments
7.0. References

Corresponding Author Contact InformationCorresponding author, University of California Berkeley, 50 University Hall # 7360, Berkeley, CA 94720 USA, Tel.: 001-510-643-0887

http://www.sciencedirect.com/science/ar ... 1011012416
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis!
Does your child have the flu? Chances are they have been exposed to ambient smoke!
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