Genotoxic Monitoring and Benzene Exposure Assessment of Gasoline Station Workers in Bangkok

Air pollution caused by traffic transportation, fuel combustions and volatile organic compounds (VOCs) composition of gasoline, has progressed to be a serious health problem in Bangkok, Thailand, especially among occupational workers as gasoline station workers (Land transportation department, 2000; Muttamara and Leong, 2000). Exposure to gasoline vapors is classified by the International Agency for Research on Cancer as possibly carcinogenic to humans, mainly on the basis of the established carcinogenicity of some component chemicals such as benzene (IARC, 1989). Benzene is one of primary interest of petroleum constituents which effects to human health. Human exposure to benzene is a global health problem. The major effects of benzene are manifested via chronic (long-term)