Difference between revisions of "Nonylphenol"

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{{Definition|title= nonylphenol  
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{{Definition|title= nonylphenol (NP)
Nonylphenol ethoxylates (NPEs) are part of the alkylphenol ethoxylate group of non-ionic surfactants. All NPEs degrade relatively easily to form short-chained NPEs and nonylphenol (NP).<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00136_BD%20on%20nonylphenol.pdf OSPAR Commission, 2004: OSPAR background document on nonylphenol/nonylphenolethoxylates]</ref>
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|definition=Nonylphenol ethoxylates (NPEs) are part of the [[APE|alkylphenol ethoxylate group]] of non-ionic surfactants. All NPEs degrade relatively easily to form short-chained NPEs and nonylphenol<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00136_BD%20on%20nonylphenol.pdf OSPAR Commission, 2004: OSPAR background document on nonylphenol/nonylphenolethoxylates]</ref>.
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== Notes ==
 
== Notes ==
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{| class="toccolours" border="1" style="float: right; clear: right; margin: 0 0 1em 1em; border-collapse: collapse;"
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! bgcolor="#FF8888" | Nonylphenol
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| align="center" bgcolor="#FFFFFF" | [[Image:Nonylphenol.png|200px|6PPD]]
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|-
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! bgcolor="#8888FF" | Formula
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| align="center" | C<sub>15</sub>H<sub>24</sub>0
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Nonylphenol ethoxylates were used as emulsifiers, dispersive agents, surfactants and/or wetting agents and are the primary source of inputs to the sea of NP and NPEs. The main users were cleaning sectors. Other significant sectors were emulsion polymerisation and textiles. Estimated use in Western Europe in 1997 was 76 600 tonnes. In Europe their domestic use has been phased out since 1995, their industrial use since 2000.
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Nonylphenol ethoxylates were used as emulsifiers, dispersive agents, surfactants and/or wetting agents and are the primary source of inputs to the sea of NP and short chained NPEs. The main users of NPEs were cleaning sectors, but they were also used in emulsion polymerisation and textiles. Estimated use in Western Europe in 1997 was 76.600 tonnes. In Europe their domestic use has been phased out since 1995, their industrial use since 2000.
It can enter the marine environment mainly through waste water from industrial activities, which either produce or use NPEs or NP, and through municipal waste waters.  
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NP can enter the marine environment mainly through waste water from industrial activities, which produce or use NPEs (or NP), and through municipal waste waters<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00136_BD%20on%20nonylphenol.pdf OSPAR Commission, 2004: OSPAR background document on nonylphenol/nonylphenolethoxylates]</ref>.
  
NP and short-chained NPEs are toxic to aquatic organisms. NP concentrations of 10µg/l can cause reproduction effects in [[pollution and benthic fishes|fish]], while concentrations of 100 µg/l are lethal. In [[pollution and marine mammals|mammals]] and fishes the are also show to cause [[endocrine disrupting compounds|endocrine disruptive effects]]. They appear to feminize juvenile males by acting like estrogens.
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NP and short-chained NPEs are [[toxic]] to aquatic organisms. NP concentrations of 10µg/l can have effect on the reproduction of [[pollution and benthic fishes|fish]] and concentrations of 100 µg/l are lethal. In [[pollution and marine mammals|mammals]] and fishes they are also shown to cause [[endocrine disrupting compounds|endocrine disruptive effects]] as they appear to feminize juvenile males by acting like oestrogens.
Since they are lipophilic, they accumulate in sediments, and [[bioaccumulation|bioaccumulate]] in aquatic species. They also have a tendency towards [[biomagnification]].  
 
  
Concentrations up to 3,1 μg/l have been measured in [[estuary|estuaries]]. In the liver of fresh water fish in Switzerland concentrations have been as high as 9,5 mg/kg [[dry weight]] of NP. Concentrations are decreasing as a  result from the reduced use of NPEs.  
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They are lipophilic, accumulate in sediments, and [[bioaccumulation|bioaccumulate]] in aquatic [[species]]. They also have a tendency towards [[biomagnification]].
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Concentrations between 0.2 and 12 μg/l are current in UK rivers and the Belgian Scheldt estuary. Concentrations up to 180 μg/l have been measured rivers receiving lots of sewage treatment works effluents<ref>[http://www.vliz.be/imis/imis.php?module=ref&refid=97941 Ghekiere, A.; Verslycke, T.; Janssen, C.R. (2006). Effects of methoprene, nonylphenol, and estrone on the vitellogenesis of the mysid Neomysis integer. Gen. Comp. Endocrinol. 147(2): 190-195] </ref>. In the liver of fresh water fish in Switzerland NP concentrations have been as high as 1 mg/kg [[dry weight]]. Concentrations have been decreasing in the past 20 years as a  result from reduced use of NPEs<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00136_BD%20on%20nonylphenol.pdf OSPAR Commission, 2004: OSPAR background document on nonylphenol/nonylphenolethoxylates]</ref>.
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== Environmental standards and legislation ==
 
== Environmental standards and legislation ==
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== See also ==
 
== See also ==
  
[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00274_BD%202_4_6_tri_tert-butylphenol%20_2006%20version_.pdf OSPAR background document on 2,4,6-tri-''tert''-butylphenol]  
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[http://www.vliz.be/projects/endis/EDnorth.php?showchemprop=true&showeffects=true&chemeffects=true&chemid=278 Nonylphenol on the ED North Database]
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[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00136_BD%20on%20nonylphenol.pdf OSPAR background document on nonylphenol/nonylphenolethoxylates]  
 
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==References==
 
==References==
 
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{{author
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|AuthorID=19826
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|AuthorFullName=Daphnis De Pooter
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|AuthorName=Daphnisd}}
 
[[Category:Coastal and marine pollution]]
 
[[Category:Coastal and marine pollution]]

Revision as of 15:24, 20 March 2013

Definition of nonylphenol (NP):
Nonylphenol ethoxylates (NPEs) are part of the alkylphenol ethoxylate group of non-ionic surfactants. All NPEs degrade relatively easily to form short-chained NPEs and nonylphenol[1].
This is the common definition for nonylphenol (NP), other definitions can be discussed in the article

Notes

Nonylphenol
6PPD
Formula
C15H240

Nonylphenol ethoxylates were used as emulsifiers, dispersive agents, surfactants and/or wetting agents and are the primary source of inputs to the sea of NP and short chained NPEs. The main users of NPEs were cleaning sectors, but they were also used in emulsion polymerisation and textiles. Estimated use in Western Europe in 1997 was 76.600 tonnes. In Europe their domestic use has been phased out since 1995, their industrial use since 2000. NP can enter the marine environment mainly through waste water from industrial activities, which produce or use NPEs (or NP), and through municipal waste waters[1].

NP and short-chained NPEs are toxic to aquatic organisms. NP concentrations of 10µg/l can have effect on the reproduction of fish and concentrations of 100 µg/l are lethal. In mammals and fishes they are also shown to cause endocrine disruptive effects as they appear to feminize juvenile males by acting like oestrogens.

They are lipophilic, accumulate in sediments, and bioaccumulate in aquatic species. They also have a tendency towards biomagnification.

Concentrations between 0.2 and 12 μg/l are current in UK rivers and the Belgian Scheldt estuary. Concentrations up to 180 μg/l have been measured rivers receiving lots of sewage treatment works effluents[2]. In the liver of fresh water fish in Switzerland NP concentrations have been as high as 1 mg/kg dry weight. Concentrations have been decreasing in the past 20 years as a result from reduced use of NPEs[1].


Environmental standards and legislation

Included in the OSPAR list of substances of priority action

Included in the water framework list of priority substances


See also

Nonylphenol on the ED North Database

OSPAR background document on nonylphenol/nonylphenolethoxylates


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 (2013): Nonylphenol. Available from http://www.coastalwiki.org/wiki/Nonylphenol [accessed on 28-03-2024]