【摘要】 利用羟胺与碘反应生成亚硝酸 ,然后与对氨基苯磺酸发生重氮化反应 ,再与 α-萘胺偶联形成偶氮化合物 ,从而建立了测定羟胺的新光度法。方法线性范围为 2 .0× 1 0 - 6 ～1 .5× 1 0 - 5mol/L ,表观摩尔吸光系数为 3.1× 1 0 4 L· mol- 1· cm- 1,应用于水中羟胺和试剂丁二酮肟含量的测定 ,结果满意。更多还原

【Abstract】 In this paper,a new spectrophotometric method for the determination of hydroxylamine is described. This method is based on hydroxylamine is oxidized by iodine to give nitrite, which can be used to form a diazo dye. The linear range is 2.0×10 -6 ～1.5×10 -5 mol/L with the apparent molar absorptivity of 3.1×10 4 L·mol -1 ·cm -1 . The method has been applied to the determination of hydroxylamine and diacetyldioxime in real samples with satisfactory results.更多还原