S. Seefeld et U. Baltensperger, DETERMINATION OF BROMIDE IN SNOW SAMPLES BY ION CHROMATOGRAPHY WITH ELECTROCHEMICAL DETECTION, Analytica chimica acta, 283(1), 1993, pp. 246-250
Ion chromatography with electrochemical detection was applied to the d
etermination of bromide in snow samples. Greater reproducibility and i
ncreased sensitivity was obtained by coating the silver electrode with
a highly insoluble AgI surface. Without preconcentration, a detection
limit of less than 1 mug l-1 was achieved. With preconcentration, sno
w samples from a high-alpine site with bromide concentrations as low a
s 90 ng l-1 could be analysed.