【摘要】 基于盐酸羟胺将Fe3+还原为Fe2+的原理,研究了测定盐酸羟胺的新方法。用硫氰酸钾作 Fe3+的显色剂,藉硫氰酸铁褪色光度法间接测定了盐酸羟胺,最大吸收波长在475 nm,盐酸羟胺质量浓度在0．4-9．6 mg／L内服从比尔定律,其回归方程为A=0．004 3ρ十0．230 5,相关系数,r为 0．998 8。回收试验表明拟订方法准确可靠,方便快捷。更多还原

【Abstract】 Hydroxylamine hydrochloride was determined by ironic rhodanate fading spectrophotometric method, based on Fe3+ reduced into Fe2+ by hydroxylamine hydrochloride and reacting on potassium rhodanate. The absorption peak is at 475 nm and the Beer’s law was obeyed in the hydroxylamine hydrochloride concentration range of 0. 4-9. 6 mg/L with the equation A = 0. 004 3ρ + 0. 230 5 and its relative coefficient r 0. 998 8. The method proposed is rapid and satisfactory.更多还原