“还原─偶氮光度法”测定废水中的硝基苯还原介质对方法灵敏度的影响

就“还原─偶氮光度法”还原介质对硝基苯还原率和分析方法灵敏度的影响进行了实验．实验的结果是：在硫酸介质中，硝基苯的平均还原率为９３．０％，分析方法的灵敏度是０．０１４７吸光度／微克硝基苯·在盐酸中为８５．３％和０．０１３７．实验结果表明，硝基苯在硫酸介质中还原优于盐酸。

The Influence of the Reducing Medium to the Reduction Rate and Response Rate of Nitro-benzene in Redution-double Nitrogen Photometric Process

Abstract We have finished the reducing experiment of reduction - absorption method about the effects of reduction rate and the sensitivity of the analaytical method to reducing medium for nitrobenzene. The result of experiment is that the average re- ducing rate of nitrobenzene is 93. 0% in the sulfuric acid medium and 85. 3 % in the chlorhydric. The sensitivity of analyse method is 0.0147 absorption of light per microgram nitrobenzene in the sulfuric acid medium and 0.0137 in chleorhydric. The experimental re- sult shows that the nitrobenzene reduction in sulfuric acid ie better than that in chlorhydric.