Determination of Manganese(Ⅱ)by Fiber Optic Kinetic Method with FIA and Binary Fluorescent Complex Indicator Manganese-Binary Fluorescent Complex-Sodium Periodate

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (2): 188.

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Determination of Manganese(Ⅱ)by Fiber Optic Kinetic Method with FIA and Binary Fluorescent Complex Indicator Manganese-Binary Fluorescent Complex-Sodium Periodate

WANG Jun-Feng, ZHANG Zhu-Jun

Department of Chemistry, Shan'xi Normal University, Xi'an, 710062

Received:1994-04-18 Revised:1994-10-03 Online:1995-02-24 Published:1995-02-24

Abstract

Abstract: Fiber optic has been coupled in the kinetic spectrofluorimetric apparatus with FIA.The feasibility of binary fluorescent complex as a new type of kinetic indicator has been investigated.Anew indicating reaction using₈-hydroxyquinoline-5-sulfate aluminium as kinetic fluorescent indicator in Mn-H₂QS-NaIO₄system has been developed to determine trace manganese(Ⅱ).The limit of detection is 1 ng/mL and the linear calibration curve is obtained in the range of 5-200 ng/mL manganese(Ⅱ) level and the sampling speed is 45 samples per hour.The proposed method has been applied to determine manganese in teas,mineral and waters.

Key words: Manganese, Binary fluorescent complex, Catalytic kinetics, Flow injection analysis, Fiber optic spectrometry

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WANG Jun-Feng, ZHANG Zhu-Jun. Determination of Manganese(Ⅱ)by Fiber Optic Kinetic Method with FIA and Binary Fluorescent Complex Indicator Manganese-Binary Fluorescent Complex-Sodium Periodate[J]. Chem. J. Chinese Universities, 1995, 16(2): 188.

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Determination of Manganese(Ⅱ)by Fiber Optic Kinetic Method with FIA and Binary Fluorescent Complex Indicator Manganese-Binary Fluorescent Complex-Sodium Periodate

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