caa a22 4500 465748635 CHVBK 20180323111827.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00323016 doi (NATIONALLICENCE)springer-10.1007/BF00323016 Ultraviolet multiwavelength absorptiometry (UVMA) for the examination of natural waters and wastewaters [Elektronische Daten] Part III. Determination of chromium(VI) [O. Thomas, S. Gallot, E. Naffrechoux] Summary: Chromium(VI) is one of the major pollutants of waters and unfortunately, at the present time, it cannot be determined with a simple and fast method. The use of the ultraviolet multiwavelength absorptiometry (UVMA) for chromium determination is very convenient for that purpose because of the well known absorption properties of chromium. Two methods are proposed which lead to different sensitivity. The first one needs hydroxide sodium addition for the measurement of the chromate form and has a detection limit of 4 μg/l. The second does not use any reagent and determines directly both dichromate and chromate forms, whose sum gives the concentration of chromium(VI). This last procedure is faster but the characteristics are slightly less precise. These proposed methods have been compared with a reference method, for natural waters and treated wastewaters, with good agreement. These procedures can be used for water quality monitoring. Springer-Verlag, 1990 Thomas O. Département de Chimie et Ingéniérie de l'Environnement, ESIGEC, Université de Savoie, B.P. 1104, F-73011, Chambery Cédex, France aut Gallot S. Centre de Mathématiques, Ecole Polytechnique, F-91128, Palaiseau Cédex, France aut Naffrechoux E. Département de Chimie et Ingéniérie de l'Environnement, ESIGEC, Université de Savoie, B.P. 1104, F-73011, Chambery Cédex, France aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/3(1990-01-01), 241-244 0937-0633 338:3<241 1990 338 216 https://doi.org/10.1007/BF00323016 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00323016 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Thomas O. Département de Chimie et Ingéniérie de l'Environnement, ESIGEC, Université de Savoie, B.P. 1104, F-73011, Chambery Cédex, France aut NATIONALLICENCE 700 1- Gallot S. Centre de Mathématiques, Ecole Polytechnique, F-91128, Palaiseau Cédex, France aut NATIONALLICENCE 700 1- Naffrechoux E. Département de Chimie et Ingéniérie de l'Environnement, ESIGEC, Université de Savoie, B.P. 1104, F-73011, Chambery Cédex, France aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/3(1990-01-01), 241-244 0937-0633 338:3<241 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465748503 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer