用^(27)Al核磁共振定量测定铝

Quantitative Determination of Aluminum by ^(27)Al Nuclear Magnetic Resonance

本文研究了27Al在强酸强碱体系中的化学位移，利用核磁共振技术建立了一个适合复杂体系中无干扰测定铝的新方法。研究了共存离子及不同实验参数对分析结果的影响。结果表明该方法特别适合于含铝混合物、铝合金及矿物等复杂体系中铝的定性定量分析。相对平均偏差0．18％，相对标准偏差0.54％。

The chemical shift of 27Al in strong acid and strong base media is studied. A new analytical method for the determination of Al in complex systems is established based on 27Al nuclear magnetic resonance. The influence of coexisting ions and experimental parameters on analytical results is studied. The results show that this method is particularly suitable to qualitative and quantitative analysis of aluminum alloy, aluminum mineral and mixtures of aluminum. The relative standard deviation is 0. 54 %.