Difference between revisions of "Tetrabromobisphenol A"

From Coastal Wiki
Jump to: navigation, search
(Notes)
 
(3 intermediate revisions by one other user not shown)
Line 1: Line 1:
=== ===
+
{{tocright}}
 
{{Definition|title=tetrabromobisphenol–A(TBBP-A)
 
{{Definition|title=tetrabromobisphenol–A(TBBP-A)
  
Line 19: Line 19:
 
Tetrabromobisphenol-A is produced in the USA, Israel and Japan but not in the EU. Current production is estimated between 120.000 and 150.000 ton each year, of which approximately 40.000 ton is exported to the European Union.
 
Tetrabromobisphenol-A is produced in the USA, Israel and Japan but not in the EU. Current production is estimated between 120.000 and 150.000 ton each year, of which approximately 40.000 ton is exported to the European Union.
  
Tetrabromobisphenol-A is likely to reach the marine environment largely through industrial waste waters
+
Tetrabromobisphenol-A is likely to reach the marine environment through industrial waste waters from land-based industrial activities. A small contribution may come from releases to the water from losses from products which contain the substance<ref name="Ospar">[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR Commission, 2005: OSPAR background document on tetrabromobisphenol-A]</ref>.
from land-based industrial activities. A small contribution may come from releases to the water from  
 
losses from products which contain the substance<ref name="Ospar">[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR Commission, 2005: OSPAR background document on tetrabromobisphenol-A]</ref>.
 
  
 
There is currently no information on levels of tetrabromobisphenol-A in marine waters, but there are
 
There is currently no information on levels of tetrabromobisphenol-A in marine waters, but there are
Line 27: Line 25:
  
 
Tetrabromobisphenol-A is considered to have a moderate tendency towards [[bioaccumulation]].
 
Tetrabromobisphenol-A is considered to have a moderate tendency towards [[bioaccumulation]].
It's is a very persistent substance. It's also very difficult to be biodegraded in aerobic conditions, while it's still rather unknown whether it degrades in anaerobic conditions: it has been suggested that under anaerobic conditions TBBT-A may be biodegraded to [[bisphenol-A]]. <P>
+
It's is a very [[persistent]] substance. It's very difficult to be biodegraded in aerobic conditions, while it's still rather unknown whether it degrades in anaerobic conditions: it has been suggested that under anaerobic conditions TBBT-A may be biodegraded to [[bisphenol-A]]. <P>
TBBP-A is a toxic substance as concentrations above 2,6 µg/l might already cause problems at chronic exposure for marine invertebrates. Such concentrations might already impair the shell growth of a [[species]] of oysters. Fresh water invertebrates and fish have a higher tolerance, concentrations of 0,12 and 0,16 mg/l respectively are necessary to cause effects.
+
TBBP-A is a [[toxic]] substance as concentrations above 2,6 µg/l might already cause problems at chronic exposure for marine invertebrates. Such concentrations might already impair the shell growth of a [[species]] of oysters. Fresh water invertebrates and fish have a higher tolerance, concentrations of 0,12 and 0,16 mg/l respectively are necessary to cause effects.
 
Present marine concentrations are considered to be of little risk to [[biota]], however concern is raised about the possible degradation to biphenol-A, of which low concentrations have been shown to affect the [[endocrine system]]<ref name="Ospar">[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR Commission, 2005: OSPAR background document on tetrabromobisphenol-A]</ref>.
 
Present marine concentrations are considered to be of little risk to [[biota]], however concern is raised about the possible degradation to biphenol-A, of which low concentrations have been shown to affect the [[endocrine system]]<ref name="Ospar">[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR Commission, 2005: OSPAR background document on tetrabromobisphenol-A]</ref>.
 
<P>
 
<P>
Line 45: Line 43:
 
[http://www.vliz.be/projects/endis/EDnorth.php?showchemprop=true&showeffects=true&chemeffects=true&chemid=656 Tetrabromobisphenol-A on ED North Database]
 
[http://www.vliz.be/projects/endis/EDnorth.php?showchemprop=true&showeffects=true&chemeffects=true&chemid=656 Tetrabromobisphenol-A on ED North Database]
 
<P>
 
<P>
[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR background document on cadmium]  
+
[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00202_BD%20on%20TBBPA.pdf OSPAR background document on Tetrabromobisphenol-A ]  
 
<P>
 
<P>
 
<BR>
 
<BR>
Line 53: Line 51:
 
<references/>
 
<references/>
  
[[Category:Coastal and marine pollution]]
+
{{author
 +
|AuthorID=19826
 +
|AuthorFullName=Daphnis De Pooter
 +
|AuthorName=Daphnisd}}
 +
 
 +
[[Category:Toxicity chemicals]]

Latest revision as of 13:36, 9 August 2020

Definition of tetrabromobisphenol–A(TBBP-A):
Tetrabromobisphenol–A is a brominated organic compound. It's primary used as an intermediate in the production of flame retardants like PBDEs, but can also be used as a flame retardant itself[1].
This is the common definition for tetrabromobisphenol–A(TBBP-A), other definitions can be discussed in the article

Notes

tetrabromobisphenol–A
TBBP-A.jpg
Formula
C15H12Br4O2

Tetrabromobisphenol-A is produced in the USA, Israel and Japan but not in the EU. Current production is estimated between 120.000 and 150.000 ton each year, of which approximately 40.000 ton is exported to the European Union.

Tetrabromobisphenol-A is likely to reach the marine environment through industrial waste waters from land-based industrial activities. A small contribution may come from releases to the water from losses from products which contain the substance[1].

There is currently no information on levels of tetrabromobisphenol-A in marine waters, but there are measurements in estuarine sediments and in North Sea biota. Concentrations in the Scheldt estuary sediments range between 0,1 and 32 µg/kg wet weight. Concentrations in North Sea biota can reach up to 245 µg/kg wet weight in whiting fillet.

Tetrabromobisphenol-A is considered to have a moderate tendency towards bioaccumulation.

It's is a very persistent substance. It's very difficult to be biodegraded in aerobic conditions, while it's still rather unknown whether it degrades in anaerobic conditions: it has been suggested that under anaerobic conditions TBBT-A may be biodegraded to bisphenol-A.

TBBP-A is a toxic substance as concentrations above 2,6 µg/l might already cause problems at chronic exposure for marine invertebrates. Such concentrations might already impair the shell growth of a species of oysters. Fresh water invertebrates and fish have a higher tolerance, concentrations of 0,12 and 0,16 mg/l respectively are necessary to cause effects. Present marine concentrations are considered to be of little risk to biota, however concern is raised about the possible degradation to biphenol-A, of which low concentrations have been shown to affect the endocrine system[1].


Environmental standards and legislation

Included in the OSPAR list of substances of priority action


See also

Tetrabromobisphenol-A on ED North Database

OSPAR background document on Tetrabromobisphenol-A


References

The main author of this article is Daphnis De Pooter
Please note that others may also have edited the contents of this article.

Citation: Daphnis De Pooter (2020): Tetrabromobisphenol A. Available from http://www.coastalwiki.org/wiki/Tetrabromobisphenol_A [accessed on 28-03-2024]