00000nam 2200000zi 4500 9.877346 CaOODSP 20241203113651 m o d f cr bn||||||||| 190801s1993 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre En13-5/93-69E-PDF Kaniansky, Dušan‏, author. On-line isotachophoretic sample preconcentration of paraquat and diquat and their determination capillary zone electrophoresis in spiked water samples / D. Kaniansky and F. Iványi ; F.I. Onuska. Burlington, Ontario : National Water Research Institute = Institut national de recherche sur les eaux, [1993] 1 online resource (5 unnumbered pages, 23 pages, 8 unnumbered pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 93-69 Page 20 blank and unnumbered in original print edition and omitted in this copy. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 13-15). "Capillary zone electrophoresis (CZE) with on-line isotachophoretic (ITP) sample pretreatment in a column-coupling configuration was studied from the point of view of ultratrace determination of paraquat and diquat in water. Using this technique, sample volumes as large as 90 µL can be accommodated and the herbicides analyzed with a detection limit of 2.10⁻⁹ mol/L. A photometric absorbance detector was used operating at 310 nm wavelength. Adsorption losses of the herbicides on the walls of the sample containers were found to be main sources of analytical errors. They could be eliminated by spiking the samples with diethylenetriamine"--Abstract. Includes summaries and abstracts in English and French. gccst Water gccst Herbicides gccst Chemistry Iványi, F., author. Onuska, Francis I., 1935- author. Canada. Environment Canada. National Water Research Institute (Canada). Research and Applications Branch. Univerzita Komenského v Bratislave. Katedra analytickej chémie. National Water Research Institute (Canada) NWRI contribution ; no. 93-69. (CaOODSP)9.844121 PDF 2.51 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-93-69-eng.pdf