Results 251 to 260 of about 81,384 (282)

Colorimetric Polydiacetylene–Aerogel Detector for Volatile Organic Compounds (VOCs)

ACS Applied Materials & Interfaces, 2017
A new hybrid system comprising polydiacetylene (PDA), a chromatic conjugated polymer, embedded within aerogel pores has been constructed. The PDA-aerogel powder underwent dramatic color changes in the presence of volatile organic compounds (VOCs), facilitated through infiltration of the gas molecules into the highly porous aerogel matrix and their ...
Susmita Dolai, Susanta Kumar Bhunia, Stella S. Beglaryan, Sofiya Kolusheva, Leila Zeiri, Raz Jelinek   +5 more
openaire   +2 more sources

Ionic liquid technology to recover volatile organic compounds (VOCs)

Journal of Hazardous Materials, 2017
Volatile organic compounds (VOCs) comprise a wide variety of carbon-based materials which are volatile at relatively low temperatures. Most of VOCs pose a hazard to both human health and the environment. For this reason, in the last years, big efforts have been made to develop efficient techniques for the recovery of VOCs produced from industry.
M J, Salar-García, V M, Ortiz-Martínez, F J, Hernández-Fernández, A P, de Los Ríos, J, Quesada-Medina   +4 more
openaire   +2 more sources

Volatile Organic Compounds (VOCs) Biofiltration with Two Packing Materials

Environmental Technology, 2006
The treatment of a gas stream containing a mixture of acetone, toluene and trichlorethylene (TCE) was tested in two biofilters packed with compost only (biofilter B1) or a mixture of pozzolan and compost (biofilter B2). The biofilter performance was evaluated at VOCs concentration of 101 mg m(-3) of acetone - 210 mg m(-3) of toluene - 89 mg m(-3) of ...
S, Gracy, C, Hort, V, Platel, M B, Gidas
openaire   +2 more sources

Volatile Organic Compounds (VOCs) for Noninvasive Plant Diagnostics

2013
Plant systems are frequently important agriculture commodity crops, and it can be critical to track emerging pathogen infections or nutrient deficiencies that can limit or prevent food production. While some methods have been developed for in field monitoring, they are frequently invasive and not rapid. Volatile organic compounds (VOCs) are produced by
Aksenov AA, Novillo AVG, Sankaran S, Fung AG, Pasamontes A, Martinelli F, Cheung WHK, Ehsani R, Dandekar AM, Davis CE.   +9 more
openaire   +2 more sources

Aldehydes, Volatile Organic Compounds (VOCs), and Health

2019
A variety of organic compounds are found in the indoor air. Aldehydes and volatile organic compounds (VOCs) are chemicals categorized with boiling points from 50–100 °C to 240–260 °C; therefore, they can be found indoors in the gaseous phase. Formaldehyde is a dominant aldehyde found indoors.
Atsuko Araki, Rahel Mesfin Ketema, Yu Ait Bamai, Reiko Kishi   +3 more
openaire   +1 more source

Grape volatile organic compounds: analysis, biosynthesis, and profiling [PDF]

Journal of Experimental Botany
Abstract Important contributors to grape quality are secondary metabolites, that will consequently define the wine quality and consumer acceptance. Secondary metabolites that influence the aromatic profile of grapes are volatile organic compounds (VOCs).
Iva Šikuten, Petra Štambuk, Zvjezdana Marković, Ivana Tomaz, Darko Preiner   +4 more
openaire   +2 more sources

VOC: Volatile Organic Compounds

2000
Volatile Organic Compounds (VOC) are implicated in different problems of air pollution. Some of these compounds are toxic and dangerous for health. But, they all contribute to ozone formation in the lower troposphere. VOC emissions can come from various sources: road traffic, aircraft transports, combustion plants, solvent use, industry and vegetation.
openaire   +1 more source

Volatile Organic Compound (VOC) Transport through Compacted Clay

Journal of Geotechnical and Geoenvironmental Engineering, 2001
Movement of volatile organic compounds (VOCs) through compacted clay liners was investigated using laboratory-scale column and tank tests. Hydraulic conductivity of the compacted clay was not significantly impacted by the introduction of VOCs in concentrations up to 20 mg/L.
Jae Y. Kim, Tuncer B. Edil, Jae K. Park
openaire   +1 more source

[Volatile Organic Compounds (VOC): definition, classification and properties].

Revue des maladies respiratoires, 2008
The term volatile organi compounds includes a wide variety of chemical substances with the common feature of being carbon compounds that are volatile at ambient temperature. They can be classified into different families defined by their chemical formulae, each of which possesses common properties, although there may be major differences in terms of ...
openaire   +2 more sources

Volatile organic compounds (VOCs) in urban atmosphere of Hong Kong

Chemosphere, 2002
The assessment of volatile organic compounds (VOCs) has become a major issue of air quality network monitoring in Hong Kong. This study is aimed to identify, quantify and characterize volatile organic compounds (VOCs) in different urban areas in Hong Kong.
S C, Lee, M Y, Chiu, K F, Ho, S C, Zou, Xinming, Wang   +4 more
openaire   +2 more sources