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本文用火焰塞曼原子吸收法对Ag、Au等20余种元素的相对灵敏度和检出限进行了测定。实验结果表明:塞曼分裂对各种元素的测定灵敏度均有不同程度的降低。其中Co、Cd、Hg、Ga、Au、Ni、Pb、Pd、等元素的灵敏度降低2～7％;Mg、Zn、Ca、Sb、Fe、Mn、Bi等元素降低11～27％;Ag、Sr、Na、K、Cu等元素降低38～59％。但是由于塞曼原子吸收法的特点,对SbNa、Cd、Ag、Cr、Cu、Mg、Zn、Mn、Ca、Pb等元素来说,塞曼火焰原子吸收法的检出限要低于常规火焰法。塞曼火焰法的基线也比常规火焰法稳定的多,这就显示了塞曼仪器的优越性。此外本文还对实验结果及仪器性能等进行了讨论。
In this paper, the relative sensitivity and the detection limit of more than 20 elements such as Ag and Au were determined by flame Zeeman atomic absorption spectrometry. The experimental results show that the Zeeman split has different degrees of sensitivity to the determination of various elements. The sensitivities of elements such as Co, Cd, Hg, Ga, Au, Ni, Pb and Pd decreased by 2 ~ 7%, while those of Mg, Zn, Ca, Sb, Fe, Mn and Bi decreased by 11 ~ 27% Sr, Na, K, Cu and other elements decreased by 38 to 59%. However, due to the characteristics of Zeeman atomic absorption method, the detection limit of Zeeman flame atomic absorption spectrometry is lower than that of conventional flame for SbNa, Cd, Ag, Cr, Cu, Mg, Zn, Mn, Ca, Pb and other elements law. The Zeeman flame baseline is also much more stable than the conventional flame method, which shows the superiority of Zeeman instruments. In addition, this article also discussed the experimental results and instrument performance.