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On-line determination of mercury in river water at the German monitoring station Schnackenburg/Elbe |
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| Authors: | Olaf Elsholz Carsten Frank Birgit Matyschok Frank Steiner Oliver Wurl Burkhard Stachel Heinrich Reincke Manfred Schulze Ralf Ebinghaus Maximilian Hempel |
| Institution: | Fachhochschule Hamburg, Lohbrügger Kirchstra?e 65, 21033 Hamburg, Germany, DE Wassergütestelle Elbe der ARGE Elbe, Ne?deich 120–121, 21129 Hamburg, Germany, DE Bezirksregierung Lüneburg, Auf dem Michaeliskloster 8, 21335 Lüneburg, Germany, DE GKSS-Forschungszentrum, Max-Planck-Stra?e 1, 21502 Geesthacht, Germany, DE GALAB, Max-Planck-Stra?e 1, 21502 Geesthacht, Germany, DE |
| Abstract: | A monitor is described which provides the on-line determination of mercury in river water at concentrations from 20 to 1000 ng/L. The measurement includes an on-line digestion with Br–/BrO3 – and UV-radiation. Each determination is controlled by an on-line addition of 50 and 100 ng/L mercury carried out by pre-dilution of a 500 and 1000 ng/L stock solution using sequential injection analysis (SIA). One cycle of analysis takes 20 min and results in nine signals. A five days stand-alone operation has been performed successfully. Details are also published at web page: “http/www.rzbd.fh-hamburg.de/¶～prmercol” |
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