Total suspended particulate matter and toxic elements indoors during cooking with yak dung |
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| Authors: | Shichang Kang Chaoliu Li Feiyue Wang Qianggong Zhang Zhiyuan Cong |
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| Institution: | 1. Department of Environmental Sciences and Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an 710049, China;3. Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto, Canada;4. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 510640, China;1. Department of Building Science, Tsinghua University, Beijing, China;2. Institute on the Environment, University of Minnesota, St. Paul, MN, USA;3. Environmental Chemistry and Technology Program, University of Wisconsin, Madison, WI, USA;4. Department of Civil and Environmental Engineering, University of Wisconsin, Madison, WI, USA;5. MRC-PHE Center for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, UK;6. College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing, China;7. Institute for Health and Social Policy, Department of Epidemiology, Biostatistics & Occupational Health, McGill University, Montréal, QC, Canada;1. Key Laboratory of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an 710061, China;2. Department of Environmental Science and Engineering, Xi''an Jiaotong University, Xi''an 710049, China;1. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;2. State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;3. Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, Mikkeli 50130, Finland;4. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China;5. University of Chinese Academy of Sciences, Beijing 100049, China;6. Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33174, USA;1. Department of Environmental Science and Engineering, Xi''an Jiaotong University, Xi''an, China;2. SKLLQG, Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an, China;3. School of Environmental & Municipal Engineering, Xi''an University of Architecture and Technology, Xi''an, China;4. JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China |
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| Abstract: | Many herders in the Tibetan Plateau still inherit the traditional lifestyle, including living in tents and burning yak dung for fuel. This short correspondence reports a pilot study on indoor air quality in the nomadic tents in the Nam Co region, inland Tibetan Plateau. The results showed very high concentrations of total suspended particles (TSP), averaging at 4.45 mg m?3 during the cooking/heating period (with daily value of 3.16 mg m?3). Elevated concentrations of toxic element Cd, As and Pb were also found within the tents, averaging 3.16 μg m?3, 35.00 μg m?3, and 81.39 μg m?3 for a day, respectively, which were not only far higher than those of WHO indoor air quality guidelines, but also more than 104–106 times higher than the outdoor air level in the Nam Co area. The study raises serious concerns over the health of Tibetan herders following their long-term exposure to the tent air. |
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