2000-320

Ecotoxicology of oil field chemicals: A short review of methods for the evaluation of low-dose and long-term impact on fish and invertebrates

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Title:Ecotoxicology of oil field chemicals: A short review of methods for the evaluation of low-dose and long-term impact on fish and invertebrates

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Conferences (Konferanser)
Authors:Beyer, J.
Sanni, S.
Research group:Biomiljø (Biomiljø)
Distribution restriction:Open
Order no.:2000/320
Price.:60
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Additional information:
The 11th International Oil Field Chemicals Symposium, Fagernes, Norge (NIF) 19-22 March, 2000.;

Abstract:
Chemicals released to the environment during petroleum exploration and ;production (E&P) operations offshore are rapidly diluted in the water column. ;Thus, acute effects in larger organisms, such as fish, related to eventual ;toxicity of chemical species would normally not be expected. In addition, there ;is an ongoing process of substituting acute toxic chemicals through evaluations ;made with hazard ranking models (e.g. CHARM). However, currently there is an ;increasing concern about potential chronic biological effects and long-term ;impacts on populations of organisms that may be linked to subtle effects at ;minute concentrations of contaminants. Unfortunately, very little information ;is available on these kinds of environmental effects of E&P chemicals. It may ;even be questioned whether the sets of effect evaluation endpoints presently ;used are sufficiently complete, or whether relevant impact parameters are still ;missing. ;Generally, the range of biological effect endpoints being investigated in ;marine organisms exposed to antropogenic contaminants has expanded considerably ;within environmental science the past decade. This process has clearly improved ;our capability for bridging various types of chemical exposure to the ;occurrence of putative adverse effects in aquatic organisms. Several commonly ;used chemicals have entered a phase-out process due to such new knowledge; one ;example is the nonylphenol derivatives. Should future regulation of the use and ;release of E&P chemicals also include chronic type of tests in line with recent ;ecotoxicological discoveries? What kind of new effect endpoints may be ;incorporated in these regulations? And what may be considered as present lacks ;of ecotoxicological knowledge relevant to E&P chemicals? In this presentation ;an attempt to briefly answer these questions is made.;;;;;;;;;;;;

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International Research Institute of Stavanger
Mailing address:
Visiting address:
P.O. Box 8046, N-4068 Stavanger, Norway
Prof. Olav Hanssensvei 15, 4021 Stavanger


Phone:
Fax:

+47 51 87 50 00
+47 51 87 52 00

General email address: firmapost@iris.no