00000nam 2200000zi 4500 9.872917 CaOODSP 20241203113648 m o d f cr ||||||||||| 190514e198802##oncd #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/88-63E-PDF Onuska, Francis I., 1935- author. Supercritical fluid chromatography of alkylene oxide : fatty alcohol condensates : their quantitation in water samples / by Francis I. Onuska and K.A. Terry. Fatty alcohol condensates : their quantitation in water samples Burlington, Ontario : National Water Research Institute, Research and Applications Branch, Canada Centre for Inland Waters, February 1988. 1 online resource (18 unnumbered pages) : graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 88-63 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "A method is described for the quantitative determination of linear alkylene oxide - fatty alcohol condensates, nonionic surface active agents in water. Surface active agent is extracted from water samples with benzene. Surfactant is further extracted by salting out into chloroform. Capillary, supercritical fluid chromatography allows the separation and quantitative determination of oligometric constituents using carbon dioxide as a supercritical fluid. In this case, a fingerprint of the surfactant is obtained. Analysis time, however, is approximately 60 minutes. In the second case, the ether groups of ethylene oxide fatty alcohol condensates are cleaved by reaction with 50 percent hydrobromic acid in glacial acetic acid in sealed ampoules. The resulting alkyl bromides are extracted with carbon disulfide and chromatographed by both the supercritical fluid, capillary column chromatography (SFC) and high resolution open tubular column gas chromatography (OTC - HRGC). Results are in good agreement between these two techniques"--Summary. Includes summary and management perspective in English and French. gccst Water management Supercritical fluid chromatography Surface active agents Terry, K. A., author. Canada. Environment Canada. National Water Research Institute (Canada). Research and Applications Branch. Canada Centre for Inland Waters. NWRI contribution ; 88-63. (CaOODSP)9.844121 PDF 1.84 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-88-63-eng.pdf