Assessment of the IL 440 Atomic-Vapour Accessory for the Determination of Gaseous Hydride-Forming Elements by Atomic-Absorption Spectrometry

摘要

The optimum experimental conditions for the determination of antimony, arsenic, bismuth, selenium, tellurium, and tin were established by the simplex method. The experimental parameters that were optimized were acid concentration, amount of sodium borohydride, reaction time, and flowrate of the purge gas. The optimum conditions were then used in a determination of the working range, detection limit, reproducibility, and measurement time for each analyte. The IL 440 atomic-vapor accessory proved to be a versatile apparatus, which is simple to operate and which yields precise and sensitive results. A laboratory method is detailed in an appendix.