HUANG Dian-wen, HE Xuan. Study on the Catalytical Spectrophotometric Determination of Trace Cobalt(Ⅱ) with Co(Ⅱ)-H2O2-Arsenazo M[J]. 2006, 23(1): 64-66.
HUANG Dian-wen, HE Xuan. Study on the Catalytical Spectrophotometric Determination of Trace Cobalt(Ⅱ) with Co(Ⅱ)-H2O2-Arsenazo M[J]. 2006, 23(1): 64-66.DOI:
the fading reaction of Arsenazo M oxidized by H2O2
which can be catalyzed by Co(Ⅱ)
has been studied.A new method for the catalytic spectrophotometric determination of trace cobalt has been developed.The lineer range is 0~0.08 mg/L and the detection limit is 1.73×10-9 g/L.The proposed method has been used to determine trace cobalt in vilamin B12 with satisfactory results.