【摘要】 提出了一种用分光光度计测定N2O4中铝含量的方法。先对样品进行预处理以消除N2O4本身颜色对比色的影响。给出了测定步骤。由实验确定的操作条件是:显色剂为玫红三羧酸铵溶液0.5 g/L,最佳用量5 mL,最大吸收波长530 nm。实验表明,该法测得的N2O4中铝含量的相对标准偏差小于5%,回收率大于96%。方法准确可靠。更多还原

【Abstract】 A measurement method of aluminum content in N₂O₄ using spectrophotometry was put forward in this paper.The pretreatment of the N₂O₄ sample was adopted to eliminate the influence of N₂O₄’s color on the colorimetric.The measurement step was given.The test condition determined by experiment was that colour regent was（0.5） g/L ammonium aurin tricarboxylate solution with optimal 5 mL dosage and maximum absorbing wavelength was 530 nm.The test showed that the relative standard deviation of aluminum content in N₂O₄ measured by this method was smaller than 5%,and recovery rate was bigger than 96%.The method was accurate and reliable.更多还原