Purpose The purpose of this memorandum is to document the conversion factors for reporting hydrocarbon emissions in different forms. The general forms are total hydrocarbons (THC), total organic gas (TOG), nonmethane hydrocarbons (NMHC), nonmethane organic gas (NMOG), and volatile organic compounds (VOC), all defined in the introduction below. For reporting hydrocarbon emissions from nonroad eq...

This paper presents, a strategy to identify persons based on measurement of human body odour from Human Sweat. To Approach this concept, the common volatile organic compounds (VOC) determined in the sweat of person of age 30 & above by using Master GC-Headspace Technique. The proposed method was capable to identify persons either with or without using deodorant irrespective of their eating habi...

Air pollution is currently the most serious environmental health threat worldwide. Volatile Organic Compounds (VOCs) are considered as the main effective factors in causing air pollution. Vehicles are among the major sources which emit these compounds, so it seems that automobiles’ microenvironment is one of the places where people are exposed to high concentration of VOC. Evaluating the exposu...

In this paper volatile organic compounds (VOCs) from durum wheat cultivars and landraces were analyzed using PTR-TOF-MS. The aim was to characterize the VOC's profile of the wholemeal flour and of the kernel to find out if any VOCs were specific to varieties and sample matrices. The VOC data is accompanied by SDS-PAGE analyses of the storage proteins (gliadins and glutenins). Statistical analys...

The protection of paintings and other objects in collections is a major concern for museum administrators, conservators and national authorities. Artwork may get damaged by accumulation of air pollutants inside protective enclosures due to emissions of volatile and semi-volatile compounds from the exposed objects or from the enclosure itself. Relatively little is known about emissions and depos...

Direct human emissions are known to contribute volatile organic compounds (VOCs) to indoor air via various mechanisms. However, few measurements that determine the emissions of a full suite of occupant-associated VOCs are available. We measured occupant-related VOC emissions from engineering students in a classroom using a proton-transfer-reaction time-of-flight mass spectrometer (PTRTOF-MS). T...

Objective: Emission of volatile organic compounds (VOC’s) into the atmosphere leads to increases in the concentration of ambient ozone, a major component of photochemical smog. Therefore, the ability to determine the contribution of a selected VOC to ozone formation would be extremely valuable for both environmental and industrial reasons. To this end, a promising strategy is to create detailed...

Modern statistical methods which were developed for pattern recognition are increasingly being used for data analysis in studies on emissions of volatile organic compounds (VOCs). With the detection of disease-related VOC profiles, novel non-invasive diagnostic tools could be developed for clinical applications. However, it is important to bear in mind that not all statistical methods are equal...

"VOC emissions from beef feedlot pen surfaces as affected by within-pen location, moisture and temperature" (2015). Air quality Feedlot Gas chromatography Odour VOC A laboratory study was conducted to evaluate the effects of pen location, moisture, and temperature on emissions of volatile organic compounds (VOC) from surface materials obtained from feedlot pens where beef cattle were fed a diet...

A solvochromic material made from incorporation of photoluminescent Pt(II)([formula: see text]) moieties into commercially available homopolymer poly(4-vinylpyridine) exhibits different emission energies, due to different degrees of self-aggregation in various solvents and as thin film upon exposure to vapour of different volatile organic compounds (VOC); self-aggregation enables intra- and int...