铬天青S分光光度法测定贮氢合金中的铝
Battery Bimonthly(2010)
Abstract
采用铬天青S分光光度法测定贮氢合金中的铝。最大吸收波长为548nm,表观摩尔吸光系数为5.24×104L/(mol·cm),铝含量在0~0.3μg/ml时有良好的线性关系,绘制标准曲线时加入的镍的含量与样品相近,可消除镍的干扰。本方法简单、快速、准确、精密度高,用于贮氢合金中铝含量的测定,结果满意,RSD<1.4%,回收率为98%~102%。
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Key words
spectrophotometry,hydrogen storage alloy,chrome azurol S,aluminum(Al)
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