β Scribed by Tatsuhiko Tanaka; Yasuyuki Maki; Yoko Kobayashi; Atsushi Mizuike
No coin nor oath required. For personal study only.
Anodic dissolution of milligram amounts of the sample and removal of most of the dissolved silver are done simultaneously by electrolysis using the sample as anode, a platinum cathode controlled at -0.25 V vs. SCE and 1 ml of 0.08 M nitric acid-O.001 M sutphuric acid as electrolyte. Silver remaining in the electrolyte is removed by a second electrolysis with a platinum anode. Nanogram amounts of lead and cadmium in the electrolyte are then determined by atomic absorption spectrometry and anodic stripping voltammetry.
π SIMILAR VOLUMES
The chelating ion-exchanger Cellex-P, a cellulose phosphate ester, is shown to he effective for the preconcentration of Cu, Ni, Mn, Cd, Zn and Pb from water. The pH of the sample is not critical within the approximate range 5-8. The collected ions can he eluted efficiently in lo-25 ml of 1 M nitric