催化分光光度法测定煤矸石中痕量锰

[Determination of trace manganese in coal gangue by catalytic spectrophotometry].

作者信息

Xia C, He X

机构信息

Institute of Environmental Eng., and Chemical Hi-tech., Xiangtan Polytechnic University, 411201 Xiangtan.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Feb;21(1):90-1.

PMID:12953587

Abstract

In HAc-NaAc solution trace Mn(II) catalyzes strongly decolorization reaction of bright green SF(BGSF) by oxidizing with potassium periodate and its catalytic extent is linear with the contents of Mn(II) in the certain range. Based on this study, a catalysis spectrophotometric method for determining trace Mn(II) was developed. The results show that the maximum absorption of the complex is at 651 nm and the detection limits of the method is 0.060 microgram.L-1 for Mn(II) and Beer's law is obeyed for Mn(II) in the range of 0.03-0.3 microgram.50 mL-1. The method has been applied to the determination of trace Mn in coal gangue with satisfactory results.

摘要

在HAc-NaAc溶液中，痕量Mn（II）能催化高碘酸钾氧化亮绿SF（BGSF）的褪色反应，且在一定范围内其催化程度与Mn（II）含量呈线性关系。基于此研究，建立了一种测定痕量Mn（II）的催化分光光度法。结果表明，该配合物的最大吸收波长为651 nm，该方法对Mn（II）的检出限为0.060 μg·L-1，Mn（II）在0.03 - 0.3 μg·50 mL-1范围内符合比尔定律。该方法已应用于煤矸石中痕量Mn的测定，结果令人满意。