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研究了非离子型表面活性剂 Ｔｒｉｔｏｎ Ｘ－ １００ 存在下，用５ － Ｂｒ－ Ｐ Ａ Ｄ Ａ Ｐ 光度法联合测定镍和锰的方法。结果表明：在ｐ Ｈ９ ．０ 的硼砂缓冲介质中，５ － Ｂｒ － Ｐ Ａ Ｄ Ａ Ｐ 与镍和锰生成紫红色络合物，最大吸收波长为λ Ｎｉｍ ａｘ ＝ ５７５ｎ ｍ ，λｍ ｎｍ ａ ｘ ＝ ５７５ｎｍ ；表现摩尔吸光系数为ε Ｎｉ５ ７ ５ ＝ １ ．０７ ×１０５ Ｌ·ｍ ｏｌ－ １ ·ｃｍ － １ ，ε Ｍｎ５ ７ ５ ＝ １ ．１２ ×１０５ Ｌ·ｍ ｏｌ－ １ ·ｃｍ － １ ；镍量在０ ～１６ μｇ／２５ ｍｌ ，锰量在０ ～１２ μｇ／２５ ｍｌ 的范围内符合比耳定律。实测了钢样中镍和锰的含量，结果令人满意。
The method for the determination of nickel and manganese with 5 - Br - P A D A P spectrophotometry in the presence of nonionic surfactant Triton X - 100 was studied. The results show that: in p H9. 0 in borax buffer medium, 5 - Br - P A D A P and nickel and manganese generated purple complexes, the maximum absorption wavelength of λ Nim ax = 575n m, λm nm a x = 575nm; performance molar absorption coefficient of ε Ni5 7 5 = 1. 07 × 105 L · m ol-1 · cm-1, ε Mn5 7 5 = 1. 12 × 105 L · m ol-1 · cm-1; Beer’s law is obeyed in the range of 0-16 μg / 25 ml of nickel and 0-12 μg / 25 ml of manganese. The contents of nickel and manganese in the steel samples were measured and the results were satisfactory.