Abstract：A new method was proposed for the determination of trace nitrite by two wavelength negative absorption catalytic spectrophotometry based on the catalysis of nitrite on the oxidation fading reaction of acridine orange by potassium bromate in phosphoric acid medium. The additive value of negative absorbances at two wavelengths was linear to the nitrite concentration in the range of 1.0×10-5-5.0×10-7 mol·L-1. The method has been used to the determination of nitrite in environment water sample with satisfactory result.
訾言勤，陆浩淼. 双波长负吸收催化光度法测定痕量亚硝酸根及其反应机理的研究[J]. 光谱学与光谱分析, 2006, 26(01): 137-139.
ZI Yan-qin, LU Hao-miao. Study on Determination of Trace Nitrite and Reaction Mechanism by Two-Wavelength Negative Absorption-Catalytic Spectrophotometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(01): 137-139.
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