镉镍电池正极浸渍液中镁含量的测定

Measurement method of magnesium in Cd/Ni secondary battery impregnating solution

研究与运用了一氧化氮-乙炔火焰原子吸收光谱法测定镉镍电池正极浸渍液中的镁含量;介绍镁最佳测定条件以及呈良好线性范围的浓度,并对该方法的干扰因素进行了综合考虑。该方法灵敏度高,干扰少,准确度与精确度均能满足镉镍电池研制工作的要求。测定样品含镁量,相对标准偏差均小于1.0%;标准加入回收率均在98%～102%范围,完全适用于镉镍电池正极浸渍液镁含量的生产控制分析。

The application of nitrous oxide-ethaneflame atomic absorbing spectral method to measurethe content of Magnesiumin Cd/Nibatteries impregnatingsolution is studied.This paper introduces the optimummeasuringcondition for Magnesiumand potencyin which a fine liner range presents,and makesa synthetic consideration to interference factors.The methodhas the advantagesof high sensitivity.Andthis methodis proved,to be simple operation,easy master,short analyzing cycle,less inter ference and good in selectivity and reappearance.The relative standard deviations are all less than1.0%in ten samplemea-sures,and the standard adding recovery is the range of98%-102%.The practice shows that the methodis fully suited to measurethe Magnesiumcontent in Cd/Nibatteries impreg-nating solution.The proposed methodwas proved to be a useful instrument analytical techniquein nitrous oxide-ethaneflame absorbingspectral method.