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 ...

In order to evaluate the adsorption potential of multi-walled carbon nanotubes (MWCNTs) for benzene, toluene and xylenes (BTX), the adsorption capacities of benzene and toluene on two different MWCNTs were measured using a gas-chromatography (GC) and then compared with each other. Fourier transform infrared (FTIR) was employed to investigate the presence of f...

volatile organic compounds (vocs) are in categories of mankind and environmentally harmful materials. some of vocs are also carcinogenic and mutagen. because of expanded application of these compounds as various domestic and industrial usages, prevention of environmental contamination of these compounds is a substantial issue.  in this study, the effect of zero-valent iron nanoparticles applica...

In this work, the structure and reactive properties of niobium (Nb)-impregnated MWW-type materials were evaluated for gas-phase total oxidation volatile organic compounds, including BTX (benzene, toluene o -xylene). The role type (two or three-dimensional) loading Nb considered. results indicated most species with a tetrahedral coordination on external surfaces both two- three-dimensional zeoli...

Aromatic compounds belong to one of most widely distributed classes of organic substances used in industry, services and households and, therefore they are relatively often measured in municipal wastewater. Their efficient biological degradation is essential to reduce the subsequent disposal of such substances into the waters of the receiver, or release into the atmosphere. The mineralization o...

Occupational exposure to (benzene, toluene and xylene, BTX is common in the Chinese workplace. Chronic occupational exposure to benzene is associated with an increased risk of hematological malignancies such as acute myeloid leukemia (AML), but the underlying mechanisms are still unclear. This study investigates changes in poly(ADP-ribosyl)ation and DNA methylation in subjects occupationally ex...

The conversion of plastic wastes into benzene, toluene, and xylenes (BTX) is a promising strategy to achieve circular economy carbon neutrality. Here, the ex situ catalytic fast pyrolysis epoxy-printed circuit boards (PCBs) waste tires (WTs) was studied using hierarchical ZSM-5 zeolites biochar (BC). results show that alkali–acid treatment created micromesoporous structures with higher specific...

Abstract The valorization of biomass-derived molecules into commodity chemicals is important for the transition to renewable feedstocks. model platform molecule 2,5-dimethylfuran (2,5-dmf) can be converted value-added aromatics such as benzene, toluene, and xylenes (BTX) over zeolite catalysts. To explore role acid site(s) in BTX selectivity, gallium has been isomorphously substituted framework...

The profiles of major volatile organic compound (VOC) sources in petrochemical industry of the Yangtze river delta, China, were experimentally determined. Source samples were taken using summa canister near the petrochemical units. The concentrations of 72 VOC species were quantified using canister sampling and a gas chromatography–mass spectrometry system, and VOC source profiles were develope...