Potentially significant underestimation of PAHs in contaminated sediments / by M. Fox, T. Murphy, L. Thiessen, R. Khan. : En13-5/94-31E-PDF
"Freshwater and marine sediment samples collected for analysis of trace organic contaminants are frequently freeze dried and then stored, either cold or at ambient temperatures, sometimes for years, before extraction and analysis. The potential for loss of up to 99% of naphthalene was observed during the analysis of coal tar contaminated sediments from Hamilton Harbour, Lake Ontario. Investigations revealed that inadequate temperature control and excessive total exposure time during freeze drying produced large and highly variable losses of naphthalene and much smaller losses of higher molecular weight PAHs. Such under reporting of naphthalene may lead to serious underestimation of the acute toxicity of sediments to benthic fauna"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.877207&sl=1
| Ministère/Organisme | Canada. Environment Canada. Canada. Water Science and Technology Directorate. National Water Research Institute (Canada). Lakes Research Branch. |
|---|---|
| Titre | Potentially significant underestimation of PAHs in contaminated sediments / by M. Fox, T. Murphy, L. Thiessen, R. Khan. |
| Titre de la série | [NWRI contribution] ; 94-31 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Cover title. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. |
| Information sur la publication | [Ottawa] : Environment Canada, Water Science and Technology Directorate = Environnement Canada, Direction générale des sciences et de la technologie, eau, [1994] |
| Auteur / Contributeur | Fox, M. E., author. Murphy, Thomas P. D. (Thomas Patrick Daniel), 1948- author. Thiessen, Lina A., author. Khan, Raza M., author. |
| Description | 1 online resource (6 unnumbered pages) : illustrations. |
| Numéro de catalogue |
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| Descripteurs | Lakes Sediments Pollutants |