パルス動作ホロカソードランプを用いた原子吸光分析装置

概要

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A novel atomic absorption spectrophotometer using a transient signal gating technique in conjunction with a conventional HCL driven with a repetitive large current of short duration is described. Great increase in temporal intensity of resonance lines from the pulsed HCLs makes considerable improvement in signal to noise ratio of the quantitative analysis. The deterioration of sensitivity caused by analytical line broadening or spectral interference of adjacent non-absorbing lines can be avoided by appropriately sampling early part of the transient waveforms. In addition, it is found that background correction can also be performed by utilizing a part of afterglow of ion line close to the analytical line. Determinations of Na, Fe and Ni are carried out in order to evaluate the applicability of the system to practical use. Experimental procedures and results on measurements of working curves are demonstrated in detail.
社団法人日本分光学会の論文