As a result of previous operations by several companies at the site, the groundwater, soil and sediment became contaminated with lead, PCBs, polyaromatic
hydrocarbons (PAHs) and VOCs.
It also found there could be health risks due to the possible inclusion of human carcinogenic polyaromatic
hydrocarbons in charcoal - a group of chemicals that occur naturally in coal, crude oil, and gasoline.
All the chemicals and reagents i.e., cyclohexane, acetone, anhydrous sodium sulphate, dichloromethane, silica and standards of polyaromatic
hydrocarbons obtained from E-Merck.
Whereas, the formation of phosphor-carbonaceous polyaromatic
structure generated from the reaction between APP and RPUF enhances the mass-transport barrier to the volatile products in high temperature.
Compared to conventional gasoline and petroleum diesel, B100 cuts harmful emissions such as carbon monoxide by 50%, polyaromatic
hydrocarbons by 90%, nitrogen oxides by 95%, and particulate matter by 99%.
It is known that aromatic and polyaromatic
compounds are the main sources of fluorescence in organic substances and this fluorescence is due to electronic transition of [pi] orbitais of the C = C bonds in these molecules .
Kioko told the court shisha contains many cancer-causing agents, including carcinogens, nitrosamines, polyaromatic
hydrocarbons, volatile aldehydes, benzene, heavy metals and addictive agents such as nicotine.
Hookah smoking, compared with cigarette smoking, produces a greater content of tobacco smoke, tar, carbon monoxide, polyaromatic
hydrocarbons, and carbonylic compounds.
Studies have shown that combustion of wood releases large particulate matter such as carbon monoxide, nitrogen oxide, formaldehyde, and polyaromatic
hydrocarbons which can deposit deep into the alveoli and can cause considerable damage to the respiratory system predisposing those exposed to such smoke to TB infection [12, 13].
The most common chemical combinations included pairs of metals (such as lead and cadmium, and thallium and cesium), a trio of phytoestrogens associated with soy consumption (genistein, daidzein, and O-desmethylangolensin, a metabolite of daidzein), polyaromatic
hydrocarbon metabolites, parabens, and caffeine.
DCES students Mahmoud Khateb Abdel Rasool, Ali el Sammak, Ahmed al Gendy and Indra Gunawan presented their projects titled"natural dyes in cyandie" and"encapsulation of polyaromatic
hydrocarbons in block copolymer micelles: theoretical and experimental study in the analytical chemistry and polymeric science and material engineering categories.
(2006) explored the chemical nature and radiocarbon signature (as a proxy of mean residence time) of fractions extracted through a variety of common procedures, all assumed to isolate PyC with a highly condensed polyaromatic