Showing 1-30 of 43 results for "


IARC monographs on the evaluation of carcinogenic risks to humans, 77, 227-266 (2000-12-02)
Tieyu Wang et al.
Ecotoxicology and environmental safety, 104, 357-364 (2014-04-17)
The contamination status and health risks of benzene, toluene, ethylbenzene and xylene (BTEX) in air, soil, dust and groundwater were evaluated in a pesticide chemical region located in Hebei province, China. The concentrations of BTEX in air ranged from 7.80...
Minghui Fan et al.
Bioresource technology, 143, 59-67 (2013-06-20)
Transformation of lignin to ethylbenzene can provide an important bulk raw material for the petrochemical industry. This work explored the production of ethylbenzene from lignin through the directional catalytic depolymerization of lignin into the aromatic monomers followed by the selective...
Hassan Karimi-Maleh et al.
Biosensors & bioelectronics, 48, 270-275 (2013-05-28)
A carbon paste electrode (CPE) modified with (9, 10-dihydro-9, 10-ethanoanthracene-11, 12-dicarboximido)-4-ethylbenzene-1, 2-diol (DEDE) and NiO/CNTs nanocomposite was used for the sensitive voltammetric determination of cysteamine (CA), nicotinamide adenine dinucleotide (NADH) and folic acid (FA) for the first time. The synthesized...
W Tang et al.
Toxicology, 144(1-3), 39-50 (2000-04-27)
In the present studies, human exposure to styrene and to ethylbenzene (EB) is assessed on the basis of literature data. Total styrene and total EB exposure result from inhalation and from food intake. Styrene and EB inhaled represent the greatest...
A A Toropov et al.
European journal of medicinal chemistry, 43(4), 714-740 (2007-07-17)
Simplified molecular input line entry system (SMILES) has been utilized in constructing quantitative structure-property relationships (QSPR) for octanol/water partition coefficient of vitamins and organic compounds of different classes by optimal descriptors. Statistical characteristics of the best model (vitamins) are the...
Jian Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 107, 1-7 (2013-02-19)
In this work, the structures and normal vibrations of p-difluorobenzene and ethylbenzene in the first excited state have been studied using resonant two-photon ionization spectrum and ab initio quantum chemical calculations. A vibronic spectrum of p-difluorobenzene has been reinvestigated in...
Andreia Neves Fernandes et al.
Bulletin of environmental contamination and toxicology, 92(4), 455-459 (2014-02-18)
This study examined surface water samples for the presence of the monoaromatic hydrocarbons benzene, toluene, ethylbenzene and xylene. Water samples were collected from the sub-basin of the Tegas River and the Marrecas Stream microbasin located in the metropolitan region of...
Leigh Henderson et al.
Mutation research, 635(2-3), 81-89 (2007-05-08)
Ethylbenzene is an important industrial chemical that has recently been classified as a possible human carcinogen (IARC class 2B). It induces tumours in rats and mice, but neither the relevance of these tumours to humans nor their mechanism of induction...
Fei Yu et al.
Journal of hazardous materials, 237-238, 102-109 (2012-09-12)
To investigate the effect of pore structure and surface chemistry on adsorption of monoaromatics, multi-walled carbon nanotubes (MWCNTs) with different specific surface area (SSA) and surface oxygen content by KOH activation treatment have been prepared. The results indicate that adsorption...
Ch Vlachokostas et al.
Environmental pollution (Barking, Essex : 1987), 177, 125-134 (2013-03-19)
Emission from road traffic has become the most important source of local air pollution in numerous European cities. Epidemiological research community has established consistent associations between traffic-related substances and various health outcomes. Nevertheless, the vast majority of urban areas are...
Jordan Wilson et al.
International journal of phytoremediation, 15(3), 257-267 (2013-03-16)
Numerous studies have demonstrated trees' ability to extract and translocate moderately hydrophobic contaminants, and sampling trees for compounds such as BTEX can help delineate plumes in the field. However, when BTEX is detected in the groundwater, detection in nearby trees...
Ann Kambhu et al.
Chemosphere, 89(6), 656-664 (2012-07-11)
The development of slow-release chemical oxidants for sub-surface remediation is a relatively new technology. Our objective was to develop slow-release persulfate-paraffin candles to treat BTEX-contaminated groundwater. Laboratory-scale candles were prepared by heating and mixing Na(2)S(2)O(8) with paraffin in a 2.25...
Alfonso Pérez-Garrido et al.
Bioorganic & medicinal chemistry, 17(2), 896-904 (2008-12-06)
This paper reports a QSAR study for predicting the complexation of a large and heterogeneous variety of substances (233 organic compounds) with beta-cyclodextrins (beta-CDs). Several different theoretical molecular descriptors, calculated solely from the molecular structure of the compounds under investigation...
R von Burg
Journal of applied toxicology : JAT, 12(1), 69-71 (1992-02-01)
You-Ya Zhou et al.
Environmental monitoring and assessment, 185(4), 3037-3048 (2012-09-11)
A method based on headspace (HS) sampling coupling with portable gas chromatography (GC) with photo ionization detector (PID) was developed for rapid determination of benzene, toluene, ethylbenzene, and xylenes (BTEX) in soils. Optimal conditions for HS gas sampling procedure were...
Sherilyn A Gross et al.
Journal of the Air & Waste Management Association (1995), 63(4), 424-432 (2013-05-22)
Concerns have arisen among the public regarding the potentialfor drinking-water contamination from the migration of methane gas and hazardous chemicals associated with hydraulic fracturing and horizontal drilling. However, little attention has been paid to the potentialfor groundwater contamination resulting from...
Carla B Vidal et al.
Journal of environmental management, 112, 178-185 (2012-08-28)
Various technologies have been used for the treatment and remediation of areas contaminated by BTEX (benzene, toluene, ethylbenzene and xylenes), which are organic compounds that are of particular concern due to their toxicity. Potential applications of synthetic zeolites for environmental...
M Rezazadeh Azari et al.
The international journal of occupational and environmental medicine, 3(1), 39-44 (2012-10-02)
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...
Reviews of environmental contamination and toxicology, 106, 123-131 (1988-01-01)
Amy V Callaghan
Current opinion in biotechnology, 24(3), 506-515 (2012-09-25)
Metabolomics is a powerful tool for the assessment of expressed (in vivo or in situ) biological processes. Metabolite profiling is often employed during field investigations of hydrocarbon-laden environments for the purpose(s) of determining the extent of intrinsic or enhanced natural...
Alan P Graves et al.
Journal of medicinal chemistry, 48(11), 3714-3728 (2005-05-27)
Molecular docking is widely used to predict novel lead compounds for drug discovery. Success depends on the quality of the docking scoring function, among other factors. An imperfect scoring function can mislead by predicting incorrect ligand geometries or by selecting...
Yujie Zhang et al.
Journal of environmental sciences (China), 24(1), 124-130 (2012-07-13)
The atmospheric concentrations of carbonyls and BTEX (benzene, toluene, ethylbenzene, m,p-xylene and o-xylene) were measured simultaneously at a same sampling site in Beijing from September 2008 to August 2010. The average concentrations of the total measured carbonyls during autumn, winter...
Adrián Flores Orozco et al.
Journal of contaminant hydrology, 136-137, 131-144 (2012-07-13)
Broadband spectral induced polarization (SIP) measurements were conducted at a former hydrogenation plant in Zeitz (NE Germany) to investigate the potential of SIP imaging to delineate areas with different BTEX (benzene, toluene, ethylbenzene, and xylene) concentrations. Conductivity images reveal a...
Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz, 55(9), 1192-1200 (2012-09-01)
The German Working Group on Indoor Guidelines of the Federal Environment Agency and the States' Health Authorities is issuing indoor air guide values to protect public health. No human studies are available for health evaluation of ethylbenzene in indoor air....
Rogers Ribeiro et al.
Biodegradation, 24(2), 269-278 (2012-08-23)
Because benzene, toluene, ethylbenzene, and xylenes (BTEX) and ethanol are important contaminants present in Brazilian gasoline, it is essential to develop technology that can be used in the bioremediation of gasoline-contaminated aquifers. This paper evaluates the performance of a horizontal-flow...
Wararat Sriprapat et al.
Ecotoxicology and environmental safety, 102, 147-151 (2014-02-18)
Air borne uptake of toluene and ethylbenzene by twelve plant species was examined. Of the twelve plant species examined, the highest toluene removal was found in Sansevieria trifasciata, while the ethylbenzene removal from air was with Chlorophytum comosum. Toluene and...
T Tunsaringkarn et al.
The international journal of occupational and environmental medicine, 3(3), 117-125 (2012-10-02)
Gasoline station workers are exposed to volatile organic compounds such as benzene, toluene, ethylbenzene and xylene (BTEX). To determine the level of exposure to BTEX compounds among gasoline station workers and measure the roadside concentrations of these compounds in the...
Cheng-Hang Lan et al.
Environmental pollution (Barking, Essex : 1987), 193, 156-164 (2014-07-16)
High-technology industries have grown continuously in Taiwan and elsewhere in the world. Volatile organic compounds (VOCs) comprise the highest percentage of emissions in these industries. The objectives of this study were to identify VOC sources and to apportion their contributions...
Yanli Zhang et al.
Journal of environmental sciences (China), 24(1), 131-141 (2012-07-13)
Air samples were collected simultaneously at platform, mezzanine and outdoor in five typical stations of subway system in Shanghai, China using stainless steel canisters and analyzed by gas chromatography-mass selective detector (GC-MSD) after cryogenic preconcentration. Benzene, toluene, ethylbenzene and xylenes...