【摘要】 用改进的纳氏光度法测定ＭＨ－Ｎｉ电池正极材料Ｎｉ（ＯＨ）２中残留的氨的量。实验中研究了络合剂ＥＤＴＡ的用量和ｐＨ对氨回收率的影响。结果表明：ＥＤＴＡ的量对氨的回收率有影响。而在碱性条件下，待蒸溜溶液的初始ｐＨ值对回收率影响不大，本方法的回收率为９５％～１０５％，相对标准偏差为３．１％，适合Ｎｉ（ＯＨ）２中氨的测定更多还原

【Abstract】 The content of ammonia remaining in nickel hydroxide was tested by the method of modified Nessler.The influcence of pH and EDTA on the reclaining rate was also studied.The results indicate that the amount of EDTA can affect the reclaiming rate of ammonia,but preliminary pH has not affected the reclaiming rate of ammonia. The reclaiming rate is 95%～105% and relative standard derivation is 3.1% in this method.It is suitable for determining ammonia in nickel hydroxide.更多还原