【摘要】 <正>分析铜合金成分,有时要求采用微量分析的方法。针对取样少的特点,本文利用火焰原子吸收法操作简便和相对精度好的优点来测定铜和锌,而对于火焰法灵敏度较差或含量低的元素锡、铅、镍用石墨炉原子吸收法测定。 锡在石墨管中有生成挥发性化合物和与石墨相互作用倾向。H.Fritzsche等更多还原

【Abstract】 The micro determinations of copper and zinc by FAAS and the micro determination of tin, lead and nickel by graphite furnace AAS were studied. Minute amount (about 100μg) of sample was used. The experimental results show that the absorption signal increases and the interference caused by matrix in acid medium is eliminated when tin is measured with Cu(NO3)2 as matrix modifier.更多还原