Ion-exchanger phase spectrophotometry for trace cobalt.
An ion-exchanger phase spectrophotometric method with disodium 1-nitroso-2-naphthol-3,6-disulphonate (Nitroso-R salt) has been developed for the determination of cobalt(II) at 0.1 mug/l. levels in sea-water. The sensitivity is about 1000 times that for conventional spectrophotometry.
Nakashima
T
T
Department of Chemistry, Faculty of Science, Fukuoka University, Nanakuma, Jonan-ku, Fukuoka 814-01, Japan.
Yoshimura
K
K
Waki
H
H