air quality inside commuting vehicles has seldom been evaluated in iran. accordingly, this study investigates the levels of benzene, toluene, ethylbenzene and xylene (btex) during workdays characterized by heavy traffic inside taxis in tehran- iran between may 2009 and october 2010. the totals of 35 personal samples were collected onto solid sorbent tubes and the concentration of volatile organ...

The presence of benzene, toluene, ethylbenzene, and xylene compounds (BTEX) in the breathing air outside inside buildings is one most significant problems related to human health today. This study was performed determine concentration BTEX pollutants indoor environments. PhoCheck used detect compounds. In this study, (BTEX pollutant) assessed four spaces, including restaurants, laundries, hair ...

background: benzene, toluene, ethylbenzene and xylene (btex) are the most important toxic volatile compounds in the air and could be easily absorbed through the respiratory tract. in recent years, the risk of exposure to btex compounds, especially benzene as a carcinogen, has been considered in petroleum depot stations. objective: to assess the occupational exposure of petroleum depot workers i...

Issue addressed: International studies have consistently found that exposure to air pollutants is higher inside cars than outside. However, few studies have compared personal exposure to air pollutants by travel mode focusing on usual travel patterns. Objectives: To compare the exposure to benzene, toluene, ethylbenzene and xylene (BTEX) and nitrogen dioxide (NO2) for commuters in central Sydne...

The potential degradation of haloalkaliphilic hydrocarbon degrading bacteria is an interesting class of extremophilic organisms that possess special adaptation strategies that make them interesting for the remediation of polluted sites. Haloalkaliphilic pure culture using BTEX as a sole source of carbon and energy was isolated from water samples from Mediterranean Sea, Abu Qir-coastline, Egypt....

Abstract The levels of volatile organic compounds (VOCs) such as Benzene, Toluene, Ethylbenzene, and Xylene isomers (BTEX) are important parameters for an indoor air quality assessment. Exposure to BTEX in science laboratories a university can potentially cause health risks workers. Active sampling was carried out using Tenax® GR sorbent tubes analyzed with thermal desorption gas chromatography...

In this study, we developed a needle trap device packed with HKUST-1 (Cu-based metal-organic framework) for the sampling and analysis of benzene, toluene, ethylbenzene, xylene (BTEX) in ambient air first time. The was synthesized via electrochemical process. Afterwards, adsorbent into 22 gauge needles. To provide different concentrations BTEX, syringe pump connected to glass chamber inject spec...