Abstract
The development and characterization is described of a solid-state detector for simultaneous multielement electrothermal atomic absorption spectrometry (ETAAS) using combined line sources. Photodiode technology providing high quantum efficiency is married to a complementary metal oxide semiconductor (CMOS) charge amplifier array for low noise output. Thus a large surface (3 cm × 6 cm) detector including 60 individual photodiodes can be produced using a high yield-high reliability process to meet the requirements of a simple optical design which has the disadvantage of a large focal plane but the advantages of high throughput and reasonable cost. An evaluation of the opto-electrical characteristics of the detector is described. The significance of the results to applications in ETAAS is discussed.
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