background: benzene, toluene, ethyl benzene and xylene compounds (btex) are very dangerous in terms of health and environmental and have high toxicity in aquatic environment. the purpose of this study was to investigate the performance analysis of petroleum hydrocarbons xylene using solar radiation uv/tio2 method in industrial synthetic waste . methods: an experimental-interventional study was ...

Four pure cultures of denitrifying bacteria, which had previously been isolated on defined alkylbenzenes, were capable of anaerobic growth with crude oil as the only source of organic substrates. Chemical analyses after growth revealed that the known growth substrates toluene, ethylbenzene, and m-xylene were selectively consumed from the oil. o-Xylene and p-xylene, which as pure compounds did n...

The separation of hippuric and m-methylhippuric acid as toluene and m-xylene metabolites present in urine of people exposed simultaneously to toluene and xylene is described. Chloroform was used for hippuric and m-methylhippuric acid extraction. Satisfactory separation of these metabolites was obtained on TLC plates covered with silica gels and developed in chloroform acetic acid-water (4:1:1);...

Mikulski, P. I., Wiglusz, Renata, Bublewska, Anna, and Uselis, J. (1972). Brit. J. industr. Med., 29, 450-453. Investigation of exposure of ships' painters to organic solvents. An analysis was carried out of the hazard to ships' painters working at different concentrations of toluene and xylene vapours in air. The authors point out that it is possible to use a joint determination of hippuric an...

Burkholderia sp. K24, formerly known as Acinetobacter lwoffii K24, is a soil bacterium capable of utilizing aniline as its sole carbon and nitrogen source. Genomic sequence analysis revealed that this bacterium possesses putative gene clusters for biodegradation of various monocyclic aromatic hydrocarbons (MAHs), including benzene, toluene, and xylene (BTX), as well as aniline. We verified the ...

Abstract The present study evaluated the contamination by monoaromatic hydrocarbons (BTEX: benzene, toluene, ethylbenzene, and xylene) of subsurface gas stations adjacent residences in Amazonian town Bragança, northern Brazil. We combined ground penetrating radar (GPR) geophysical tool, to detect possible plumes BTEX, with chromatography (GC) mass spectrometry (MS), which were used diagnose pre...

Ethylbenzene is primarily produced by the alkylation of benzene with ethylene in liquid-phase slurry reactors promoted with aluminum chloride catalysts or by vapor-phase reaction of benzene with dilute ethylene-containing feedstock with a boron trifluoride catalyst supported on alumina (Cannella 2007; Clayton and Clayton 1981; HSDB 2009; Welch et al. 2005; Ransley 1984). Newer versions of the m...

In the present study, the concentrations of three volatile organic compounds (VOCs), namely, acronym for benzene, toluene, and xylenes (BTX) were assessed because of their role in the tropospheric chemistry. Two representative sites, a roadside and a petrol pump, were chosen for sample collection. VOCs were collected using SKC-activated charcoal tubes and SKC personal sampler and characterized ...

A novel strain of p-xylene-degrading sulfate reducer was isolated in pure culture. Strain PP31 was obtained from a p-xylene-degrading enrichment culture established from polluted marine sediment. Analyses of the 16S rRNA gene and two functional genes involved in sulfate respiration and anaerobic degradation of aromatic compounds revealed that the isolate was closely related to members of the ge...