Search results
Results From The WOW.Com Content Network
Breath gas analysis is a method for gaining information on the clinical state of an individual by monitoring volatile organic compounds (VOCs) present in the exhaled breath. Exhaled breath is naturally produced by the human body through expiration and therefore can be collected in non-invasively and in an unlimited way. [1]
The VOC Solvents Emissions Directive was the main policy instrument for the reduction of industrial emissions of volatile organic compounds (VOCs) in the European Union. It covers a wide range of solvent-using activities, e.g. printing, surface cleaning, vehicle coating, dry cleaning and manufacture of footwear and pharmaceutical products.
IMS chip at the U.S. Pacific Northwest National Laboratory: this dime-sized chip provides dozens of channels through which ions travel (perpendicular to plane of view) to be separated and identified Ion mobility spectrometry ( IMS ) It is a method of conducting analytical research that separates and identifies ionized molecules present in the ...
In a photoionization detector, high-energy photons, typically in the vacuum ultraviolet (VUV) range, break molecules into positively charged ions. [2] As compounds enter the detector they are bombarded by high-energy UV photons and are ionized when they absorb the UV light, resulting in ejection of electrons and the formation of positively charged ions.
The profiling of VOCs emitted by living organisms takes an increasing importance in various scientific domains like in medicine, in food sciences or in chemical ecology. For instance, in medicine, non-invasive diagnosis techniques of cancer based on the profiling of VOCs from the exhaled breath have been developed.
AOL Promotions. You’ll no longer see paid ads, but you’ll continue to see promotions for AOL products and brands. We want to keep you in-the-know of our latest product news and information.
It is still employed with a focus on volatile organic compounds (VOCs) found in body odor. [2] VOCs are carbon-based molecular groups having a low molecular weight, secreted during cells' metabolic processes. [3] Their profiles may be altered by diseases such as cancer, metabolic disorders, genetic disorders, infections, and among others.
Non-methane volatile organic compounds (NMVOCs) are a set of organic compounds that are typically photochemically reactive in the atmosphere—marked by the exclusion of methane. [1] NMVOCs include a large variety of chemically different compounds, such as benzene , ethanol , formaldehyde , cyclohexane , 1,1,1-trichloroethane and acetone . [ 2 ]