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2003•Journal of Shandong Institute of Building MaterialsRequires access

Spectrophotometric Determination of Trace Manganese (II) with 5'-Nitrosalicylfluorone in Cationic-microemulsion Medium

Ke Zhang

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Abstract

The chromogenic reaction of manganese (Ⅱ)-5'-nitrosalicylfluorone in mixture cationic-microemulsion medium was studied. In the borax (pH9.5～10.5) buffer solution, manganese reacts with 5'-NSF to form a 1∶2 purple complex. The maximum absorption is at 548?nm and the molar absorptivity is 1.39×10 5?L·mol -1·cm -1.Beer's law is obeyed in the range of 0～0.28?mg/L for manganese (Ⅱ). The method has been applied to the determination of trace manganese in the rock minerals and water with satisfactory results.

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What this paper is about

The chromogenic reaction of manganese (Ⅱ)-5'-nitrosalicylfluorone in mixture cationic-microemulsion medium was studied. In the borax (pH9.5～10.5) buffer solution, manganese reacts with 5'-NSF to form a 1∶2 purple complex. The maximum absorption is at 548?nm and the molar absorptivity is 1.39×10 5?L·mol -1·cm -1.Beer's law is obeyed in the range of 0～0.28?mg/L for manganese (Ⅱ). The method has been applied to the determination of trace manganese in the rock minerals and water with satisfactory results.

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Available abstract

The chromogenic reaction of manganese (Ⅱ)-5'-nitrosalicylfluorone in mixture cationic-microemulsion medium was studied. In the borax (pH9.5～10.5) buffer solution, manganese reacts with 5'-NSF to form a 1∶2 purple complex. The maximum absorption is at 548?nm and the molar absorptivity is 1.39×10 5?L·mol -1·cm -1.Beer's law is obeyed in the range of 0～0.28?mg/L for manganese (Ⅱ). The method has been applied to the determination of trace manganese in the rock minerals and water with satisfactory results.

Key concepts: Manganese, Molar absorptivity, Cationic polymerization, Microemulsion, Chemistry, Chromogenic, Spectrophotometry, Borax

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