polycyclic


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Related to polycyclic: Polycyclic aromatic hydrocarbons

polycyclic

[¦päl·i′sī·klik]
(organic chemistry)
A molecule that contains two or more closed atomic rings; can be aromatic (such as DDT), aliphatic (bianthryl), or mixed (dicarbazyl).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Polycyclic aromatic hydrocarbons in Norwegian forest soils; impact of long range atmospheric transport.
The likely culprit, scientists eventually deduced, was the intrinsic infrared emission from a class of organic molecules known as polycyclic aromatic hydrocarbons (PAHs), which, scientists would later discover, are amazingly plentiful; nearly 10 percent of all the carbon in the universe is tied up in PAHs.
There are very few studies that consider monitoring the effects of a polycyclic aromatic hydrocarbon spill; most have been done with biomarkers, without any analytical quantification [16].
Large Polycyclic Aromatic Hydrocarbons are ubiquitous combustion products and belong to more important hydrocarbon molecules.
According to an announcement, a batch of the smoked sausages brand '[eth]*IeIu[eth] [eth]1/4Ia[eth] [eth][bar][eth] [eth]ae[eth][c][eth][c][eth][eth]'Ia[eth] [eth][bar][eth]1/4 [eth][currency][eth] Ie[eth] Ia[eth]Ie [eth]centsIa[eth][sup.3]' -- Choriatika Allantika Xipsitis Ltd -- contains more than the permitted levels of Polycyclic Aromatic Hydrocarbons (PAHs) which are a group of more than 100 different chemicals that are released from burning coal, oil, gasoline, trash, tobacco, wood, or other organic substances such as charcoal-broiled meat.
MT-TNO research into the biodegradation of soils and sediments contaminated with oils and polycyclic aromatic hydrocarbons (PAHs).
"Studying the properties of the polycyclic aromatic hydrocarbon mid-infrared emission bands in distant universe is of fundamental importance to improving our understanding of the evolution of dust and chemical enrichment in galaxies throughout cosmic time," the University of California said in the statement.
Polycyclic aromatic hydrocarbons (PAHs), a group of typical chemicals containing two or more aromatic rings, are widely distributed in water [1],soil, sediment [2-5],and air [6].PAHs have been attracting increasing attention, because many are known to be carcinogenic, mutagenic, or teratogenic [7, 8], which are serious health threats to organisms.
The present study entails the quantification and evaluation of potential risk due to Polycyclic Aromatic Hydrocarbons (PAHs) which is one of the known organic pollutants from vehicular, power generation system's exhaust and other industrial activities.
Markes' new sorbent tube is dedicated to the reliable analysis of polycyclic aromatic hydrocarbons (PAHs) in air.

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