Both AA spectrometers used at the ASU have the capacity to perform hydride generation analysis.
Hydride generation is a technique in which a reduction step is employed to convert certain elements to volatile metal hydrides. The atomization efficiency is thus greatly increased with a corresponding decrease in detection limits.
The technique has been in use for several decades and interferences are few and well known. Elements such as arsenic are routinely analyzed.
The FS280 instrument has a ETC-60 electothermal controller with furnace unit. This module allows enhanced stability over flame source atomization and an additional impovement in detection limits.
A vapour generation accessory (VGA 76) shown opposite, controls the addition and mixing of sample, reducing agent and acid.
The hydride setup unit is fully automated and can be left unattended, maximizing sample throughput.