00000nam 2200000zi 4500 9.882402 CaOODSP 20241203113653 m o d f cr |n||||||||| 191125e197412##onca o f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En36-522/31-1974E-PDF Brownlee, B. G., author. Biodegradability testing of nonionic surfactants / Brian Brownlee. [Burlington, ON] : Canada Centre for Inland Waters, December 1974. 1 online resource (19 pages) : figures. text txt rdacontent computer c rdamedia online resource cr rdacarrier Unpublished report Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 16). "The biodegradability of three nonionic surfactants was determined at 20ºC. The OECD screening method was used. Cultures were inoculated with secondary sewage effluent. Surfactant concentrations were measured by the Wickbold method consisting of solvent extraction by foam stripping, precipitation of surfactant with a bismuth reagent, and potentiometric determination of the bismuth. Degree of biodegradation decreased in the order: alcohol ethoxylate, nonylphenol ethoxylate, branched alkylphenol ethoxylate"--Summary. Surface active agents Biodegradation. Surfactants Biodégradation. Canada. Environment Canada. Canada Centre for Inland Waters. Unpublished report (Canada Centre for Inland Waters) (CaOODSP)9.881827 PDF 949 KB https://publications.gc.ca/collections/collection_2019/eccc/en36-522/En36-522-31-1974-eng.pdf