In Thailand, the emissions of air pollutants from industrial areas are one of the main sources of airpollution. It is generally believed that indoor air pollution such as VOCs as negative causes for ahealth risk. In our research, we measured the concentration of two Volatile organic compounds,formaldehyde and isopropyl alcohol, emissions from sheet-fed offset lithographic printingoperations during January - July 2006 in Bangkok, Thailand. The portable ambient air analyzer wereused to collect and analyze formaldehyde and isopropyl alcohol concentration.
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