Abstract：A new catalytic spectrophotometric method for the determination of trace amount of Mn(Ⅱ) was developed. The method is based on the oxidation of 7-(2-nitryl-4-methyl phenylazo)-8-hydroxy-qinolin-5-slfonic acid by potassium periodate in the presence of nitrilo triacec acid as an activator and CTMAB as a sensitizer. The wavelengths for the determination was 509 nm.The linear range of determination is 0-3.2×10-9 g·mL-1 for Mn(Ⅱ). The determination limit is 3.8×10-11 g·mL-1. The interference of foreign ions was studied. The method can be used for the determination of Mn(Ⅱ) in mung bean, rice, cereal and soil samples.
宋桂兰，任皞，李国宝，杨琳. CTMAB增敏催化动力学光度法测定痕量锰[J]. 光谱学与光谱分析, 2006, 26(08): 1536-1539.
SONG Gui-lan, REN Hao, LI Guo-bao, YANG Lin. Determination of Trace Manganese by Catalytic Kinetic Spectrophotometry Method with CTMAB as the Sensitizer. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(08): 1536-1539.
