Citation: Shao Min LIU, Jiao Mai PAN. Determination of Trace Manganese (Ⅱ) by Its Catalytic De-colourizing Reaction On the Aerial Oxidation of 1.5-bis (2-hydroxy-5-chlorophenyl)-3-cyanoformazan and Its Kinetic Reaction Mechanism[J]. Chinese Chemical Letters, ;1999, 10(5): 403-406. shu

Determination of Trace Manganese (Ⅱ) by Its Catalytic De-colourizing Reaction On the Aerial Oxidation of 1.5-bis (2-hydroxy-5-chlorophenyl)-3-cyanoformazan and Its Kinetic Reaction Mechanism

Shao Min LIU ¹ ,
Jiao Mai PAN ²

1.
Department of Analytical Chemistry, Hefei Institute of Economics and Teehnology, Hefei 230052;
2.
Departmenl of chemistry, Easl China Normal University, Shanghai 200062

Received Date: 17 November 1998

A kinetic method is described for the determination of trace amounts of maneancse(Ⅱ) based on its catalytic effect on the aerial oxidation of 1.5-bis (2-hydrox)-5-chlorophenyl)-3-cyanofonnazan. The reaction is followed spcctrophotometrically by measuring the rate of change in absorbancc at 580nm. The calibration curve (rate constant vs. manganese concentration) is linear in the range of 10~200ng in 25ml solutions. Kinetic parameters of the reaction arc reported. There are few interfcrences.
- Catalytic-spectrophotonletry,
- manganese,
- 1.5-bis(2-hydroxy-5-chlorophenyl)-3-cyanofrmazan
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