| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,760,046,434 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
aromatic hydrocarbon |
Also found in: Encyclopedia, Wikipedia | 0.01 sec. |
|
hydrocarbon /hy·dro·car·bon/ (hi´dro-kahr″bon) an organic compound that contains carbon and hydrogen only. alicyclic hydrocarbon one that has cyclic structure and aliphatic properties. aliphatic hydrocarbon one in which no carbon atoms are joined to form a ring. aromatic hydrocarbon one that has cyclic structure and a closed conjugated system of double bonds. chlorinated hydrocarbon any of a group of toxic compounds used mainly as refrigerants, industrial solvents, and dry cleaning fluids, and formerly as anesthetics. aromatic hydrocarbon Etymology: Gk, aroma, spice; hydor, water; L, carbo, coal an organic compound that has a benzene or other aromatic ring, as distinguished from an open-chain aliphatic compound. hydrocarbon an organic compound that contains carbon and hydrogen only. alicyclic hydrocarbon one that has cyclic structure and aliphatic properties. aliphatic hydrocarbon one that does not contain an aromatic ring. aromatic hydrocarbon one that has cyclic structure and a closed conjugated system of double bonds. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| The program differs from the previous round of testing conducted in 2002 in that it is specifically aimed at finding and testing dust for polycyclic aromatic hydrocarbons, lead, asbestos, and manmade vitreous fibers, four substances that the EPA's top scientists have said are prevalent toxins contained in the WTC dust and act as an "fingerprint" differentiating WTC from urban dust which can also contain contaminants. In April, the Center for Children's Environmental Health at Columbia University released findings concluding that children exposed to combustion-related pollutants known as polycyclic aromatic hydrocarbons (PAH) in the womb are 2. Extracts were split, with 50% going to bioassays and 25% going to chemical analysis of polychlorinated dibenzo-p-dioxins/ dibenzofurans (PCDDs/PCDFs) and nitropolycydic aromatic hydrocarbons (N-PAHs), and 25% going to chemical analysis of PAHs, polychlorinated biphenyls (PCBs), and organochlorine (OC) pesticides. |
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|