Wu Yun, Li Jing-feng
Department of Chemistry, Inner Mongolia Normal University, Huhhot 010022, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2004 Dec;24(12):1652-4.
A new catalytic kinetic spectrophotometry method for the determination of trace manganese based on the oxidation reaction of H2O2 with methylthymol blue in Na2B4O7-NaOH medium has been developed. The range of the determination range was 0.20-40.00 microg x L(-1). The apparent activation energy and apparent rate constant were 73.24 kJ x mol(-1) and 5.62 x 10(-4) x s(-1), respectively, and the detection limit was 6.4 x 10(-10) g x mL(-1). The method has been used to determine trace manganese in Mongolian medicine with satisfactory result.
基于在Na2B4O7-NaOH介质中H2O2与甲基百里香酚蓝的氧化反应，建立了一种测定痕量锰的新催化动力学分光光度法。测定范围为0.20 - 40.00 μg x L(-1)。表观活化能和表观速率常数分别为73.24 kJ x mol(-1)和5.62 x 10(-4) x s(-1)，检出限为6.4 x 10(-10) g x mL(-1)。该方法已用于测定蒙药中的痕量锰，结果令人满意。
