00000nam 2200000zi 4500 9.873353 CaOODSP 20241203113649 m o d f cr bn||||||||| 190522s1997 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/97-202E-PDF Onuska, Francis I., 1935- author. High resolution gas chromatography - mass spectrometry of some benzidines in industrial waste water / Francis I. Onuska, Ken A. Terry and R. James Maguire. Burlington, Ontario : Aquatic Ecosystem Protection Branch, National Water Research Institute, Department of the Environment, [1997] 1 online resource (4 unnumbered pages, 13 pages) : illustration. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 97-202 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "The analysis of aromatic amines, particularly benzidines, at trace levels in environmental media has been difficult because of the lack of suitably deactivated capillary column stationary phases for gas chromatography. This report describes the use of a newer type of column, and it describes a method for the analysis of benzidines in waste water. The method was applied to the analysis of industrial effluent from a pigment-manufacturing company. 3,3'-Dichlorobenzidine and benzidine were found in four 24-hour composite waste water samples in 1996 at concentrations up to 650 µg/L. Aniline and some substituted anilines were also found in one of the composite samples"--Abstract. Includes management perspective and abstract in French. gccst Waste water gccst Pollutants Terry, K. A., author. Maguire, R. J. (R. James) author. Canada. Environment Canada. National Water Research Institute (Canada). Aquatic Ecosystem Protection Branch. NWRI contribution ; no. 97-202. (CaOODSP)9.844121 PDF 745 KB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-97-202-eng.pdf