Abstract
Benzene, toluene, ethylbenzene and xylene (BTEX) are the most abundant volatile organic compounds (VOCs) in the urban atmosphere. In this paper, fates and possible sources of BTEX in general atmosphere were reviewed. A fairly comprehensive review of BTEX in atmosphere of China’s coastal cities was presented. In the general environment, BTEX partitions mainly into air. Higher atmospheric concentrations of BTEX were observed in the cities of south China than in north China and in winter than in summer. The atmospheric BTEX concentrations were significantly reduced over the past two decades. Vehicle emission and coal burning were the most important sources in North China. In south China, the other sources could make remarkable contribution to atmospheric BTEX concentrations.
Highlights
China is facing serious air pollution [1]
J Environ Sci Public Health 2017; 1 (2): 86-106 (VOCs) that were originated from vehicle exhaust, industrial emission, petroleum and its products, coal and biomass burning [3]
volatile organic compounds (VOCs) in the environment were generally originated from the leakage of petroleum and its products, vehicle exhaust, coal and biomass burning, painting and petrochemical industry [4, 9]
Summary
Ozone has been the second most important cause of air pollution after PM2.5 in recent years. BTEX in the industrial products can enter the environment [5]. They can be widely found in the general environment [6]. BTEX were the most abundant VOCs species in the atmosphere and surface water [4, 7, 8]. BTEX in coastal cities of China have been widely studied [4, 7, 8]. A fairly comprehensive review of BTEX in atmosphere of Chinese coastal cities was presented. Fates and possible sources of BTEX in urban atmosphere were reviewed
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