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本文研究了硫堇与亚硝酸根的反应 ,根据三波长处吸光度的加和值与亚硝酸根浓度的线性关系 ,提出并建立了测定亚硝酸根含量的新方法 ,线性范围 0～ 0 .5 6 0 m g· L- 1 ,用于样品中亚硝酸根的测定获得满意结果。并对反应机理进行了初步探讨
In this paper, the reaction between thionine and nitrite was studied. A new method for the determination of nitrite content was proposed and established according to the linear relationship between the sum of absorbance at three wavelengths and the concentration of nitrite. The linear range was from 0 to 0.56 0 mg · L-1, for the determination of nitrite in the sample to obtain satisfactory results. The reaction mechanism was also discussed