CATALYTIC PHOTOMETRY FOR THE DETERMINATION OF TRACE AMOUNTS OF MANGANESE(II)
Jie Guo, LI Zu-bi
Abstract
Jie Guo, LI Zu-bi
Abstract
A new kinetic method for the determination of trace amounts of manganese(Ⅱ) was established based on the catalytic action of Mn(Ⅱ) on the oxidation fading reaction between butylrhodamine B and KIO_4 in HOAc-NaOAc buffer at pH 4.63. Linearity of the calibration curve was kept in the range of 0-1.0 μg/25 mL for Mn(Ⅱ), and the detection limit was 2.87×10~(-6)g·L~(-1). The method has been used for the determination of trace manganese in water samples with satisfactory results.
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A new kinetic method for the determination of trace amounts of manganese(Ⅱ) was established based on the catalytic action of Mn(Ⅱ) on the oxidation fading reaction between butylrhodamine B and KIO_4 in HOAc-NaOAc buffer at pH 4.63. Linearity of the calibration curve was kept in the range of 0-1.0 μg/25 mL for Mn(Ⅱ), and the detection limit was 2.87×10~(-6)g·L~(-1). The method has been used for the determination of trace manganese in water samples with satisfactory results.
Key concepts: Manganese, Detection limit, Calibration curve, Trace Amounts, Chemistry, Photometry (optics), Catalysis, Buffer solution