On-line determination of mercury in river water at the German monitoring station Schnackenburg/Elbe.
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".
Fachhochschule Hamburg, Germany.
O
O
Elsholz
C
C
Frank
B
B
Matyschok
F
F
Steiner
O
O
Wurl
B
B
Stachel
H
H
Reincke
M
M
Schulze
R
R
Ebinghaus
M
M
Hempel
D004784:Environmental Monitoring / Q000295:instrumentation*; D005618:Fresh Water / Q000737:chemistry*; D005858:Germany; D008628:Mercury / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D014874:Water Pollutants, Chemical; D008628:Mercury