碱性品红催化光度法测定痕量亚硝酸根  

Determination of Trace Nitrite by Catalytic Spectrophotometry with Basic Fuchsin

作　　者：陈常兴 

机构地区：[1]山东医学高等专科学校,山东省临沂市青年路39号276002

出　　处：《光谱实验室》2009年第3期724-726,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：在H3PO4介质中和加热条件下,痕量亚硝酸根对溴酸钾氧化碱性品红的反应有强烈的催化作用,研究了反应的条件,测定了动力学参数,建立了测定痕量亚硝酸根的方法,方法检出限为1.38×10-9g.mL-1,测定范围为1.38—69.00μg.L-1,用于水样、唾液等中的痕量亚硝酸根的测定,结果满意。Trace nitrite can produce great catalysis in the oxidation of basic fuchsin with KBrO3 in H3PO4 and heated. The reaction conditions were studied, the kinetic parameters were determined, and the determination method for trace nitrite was established. The detection limit is 1.38×10^-9g· mL^-1 in the linear range of 1. 38-69. 00μg · L^-1. This method can be used to determine the trace nitrite in water and saliva with satisfactory results.

关 键 词：催化光度法 碱性品红 亚硝酸根 

分 类 号：O657.32[理学—分析化学]