Simultaneous Multielement and Multiline Atomic Absorption Analysis Using a Computer-Coupled Photodiode Array Spectrometer

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Abstract
Development of simultaneous multielement atomic absorption analysis has been hampered by a lack of effective multichannel spectrochemical measurement systems. In this study a computer-coupled photodiode array spectrometer is applied to atomic absorption measurements. Using a multielement hollow cathode lamp source and this spectrometer system, a complete “atomic absorption spectrum” can be measured over a range of 130 Å. Both quantitative and qualitative absorption information can be simultaneously acquired for lines of several elements and several lines of one element. Results are presented for multiline atomic absorption of Cr and multielement atomic absorption of Ni and Cr, and Cr and Fe.