簡易型溶出波ポーラログラフの試作
1972 年 21 巻 11 号 p. 1516-1518
詳細
1972 年 21 巻 11 号 p. 1516-1518
A handy-type anodic stripping polarograph which has only basic circuit of polarograph was presented for an ultra trace analysis of metal ion. The schematic diagram was given in Fig. 1. Its sweep rate driven by a synchronous motor and gear-head was 15 sec/full span. Limit switches were attached to both sides of a potentiometer and load resistors were 2 kΩ, 5 kΩ and 10 kΩ. A recoder chart speed was 60 cm/min and a full-scale was 10 mV for 25 cm.
The wave height of cadmium was linearly proportional to 0.0010.01 ppm for 10 min pre-electrolysis and 0.010.1 ppm for 2 min pre-electrolysis. The standard deviation was 5% for 0.08 ppm Cd in 0.2 M KCl at 10 measurements. This handy-type anodic stripping polarograph was applied to the determination of Cd in mine water. These results obtained with this anodic stripping polarograph were in good agreements with that obtained with atomic absorption spectroscopy.
