Difference between revisions of "VOC"
From Coastal Wiki
(→Notes) |
Dronkers J (talk | contribs) |
||
| (9 intermediate revisions by one other user not shown) | |||
| Line 1: | Line 1: | ||
{{Definition|title= volatile organic compounds (VOC) | {{Definition|title= volatile organic compounds (VOC) | ||
| − | |definition= There is no clear and widely supported definition of a VOC. VOC is a term used more in relation to air quality and environmental studies. From a chemistry viewpoint “Volatile Organic Compound” can mean any organic compound (all chemical compounds containing carbon with exceptions) that is volatile (evaporating or vaporizing readily under normal conditions). This is a very broad set of chemicals. Definitions vary depending on the particular context. There are many other widely used terms that are a subclass of VOCs | + | |definition= There is no clear and widely supported definition of a VOC. VOC is a term used more in relation to air quality and environmental studies. From a chemistry viewpoint “Volatile Organic Compound” can mean any organic compound (all chemical compounds containing carbon with exceptions) that is volatile (evaporating or vaporizing readily under normal conditions). This is a very broad set of chemicals. Definitions vary depending on the particular context. There are many other widely used terms that are a subclass of VOCs<ref>[http://en.wikipedia.org/wiki/Volatile_organic_compound www.wikipedia.org July 27 2009]</ref>.}} |
== Notes == | == Notes == | ||
| − | VOCs include substances like the chlorinated hydrocarbons (CHC like: [[chloroform]], | + | VOCs include substances like the chlorinated hydrocarbons (CHC like: [[trichloromethane|chloroform]], tetrachloormethane, tetrachloorethyleen,...), monoaromatic substances (MAH like: [[benzene]], [[trichlorobenzene]], toluene and ethylbenzene). |
| − | Most VOCs are industrial compounds with a high annual production. So is tetrachloormethane produced at 300 | + | Most VOCs are industrial compounds with a high annual production. So is tetrachloormethane produced at 300.000 tons a year.<P> |
| − | Many are persistent and toxic but show a low tendency towards [[bioaccumulation]] (at least compared to PCBs). Chronic exposure to some VOCs (e.g. | + | Many are [[persistent]] and [[toxic]] but show a low tendency towards [[bioaccumulation]] (at least compared to [[PCB|PCBs]]). Chronic exposure to some VOCs (e.g. benzene) can cause immunodeficiency and carcinogenic effects<ref>Roose, P.; Brinkman, U.A.Th. (2005). Determination of volatile organic compounds in marine biota, in: Roose, P. (2005). Volatile organic compounds and related microcontaminants in the Scheldt estuary and the southern North Sea: method development and monitoring. pp. 85-108 </ref>. |
| − | <ref>Roose, P.; Brinkman, U.A.Th. (2005). Determination of volatile organic compounds in marine biota, in: Roose, P. (2005). Volatile organic compounds and related microcontaminants in the Scheldt estuary and the southern North Sea: method development and monitoring. pp. 85-108 </ref> | ||
| − | |||
| − | |||
<P> | <P> | ||
<BR> | <BR> | ||
| Line 23: | Line 20: | ||
<references/> | <references/> | ||
| − | [[Category: | + | {{author |
| + | |AuthorID=19826 | ||
| + | |AuthorFullName=Daphnis De Pooter | ||
| + | |AuthorName=Daphnisd}} | ||
| + | |||
| + | [[Category:Toxicity chemicals]] | ||
Latest revision as of 13:39, 9 August 2020
Definition of volatile organic compounds (VOC):
There is no clear and widely supported definition of a VOC. VOC is a term used more in relation to air quality and environmental studies. From a chemistry viewpoint “Volatile Organic Compound” can mean any organic compound (all chemical compounds containing carbon with exceptions) that is volatile (evaporating or vaporizing readily under normal conditions). This is a very broad set of chemicals. Definitions vary depending on the particular context. There are many other widely used terms that are a subclass of VOCs[1].
This is the common definition for volatile organic compounds (VOC), other definitions can be discussed in the article
|
Notes
VOCs include substances like the chlorinated hydrocarbons (CHC like: chloroform, tetrachloormethane, tetrachloorethyleen,...), monoaromatic substances (MAH like: benzene, trichlorobenzene, toluene and ethylbenzene).
Most VOCs are industrial compounds with a high annual production. So is tetrachloormethane produced at 300.000 tons a year.Many are persistent and toxic but show a low tendency towards bioaccumulation (at least compared to PCBs). Chronic exposure to some VOCs (e.g. benzene) can cause immunodeficiency and carcinogenic effects[2].
Case studies
Volatile organic compounds in North Sea fish
References
- ↑ www.wikipedia.org July 27 2009
- ↑ Roose, P.; Brinkman, U.A.Th. (2005). Determination of volatile organic compounds in marine biota, in: Roose, P. (2005). Volatile organic compounds and related microcontaminants in the Scheldt estuary and the southern North Sea: method development and monitoring. pp. 85-108
Please note that others may also have edited the contents of this article.
|
