Abstract:
Arsenic, bismuth, germanium, antimony and tin were simultaneously determined
by continuous hydride generation and inductively coupled plasma-atomic emission
spectrometry .
I
Hydrides were introduced into four different types of gas-liquid separators. Two of
the gas-liquid separators were available in-house. A third was developed for this project and
a fourth was based on a design used by CET AC. The best signal intensity was achieved by
the type II frit-based gas-liquid separator, but the modified Cetac design gave promise for the
future, due to low relative standard deviation.
A method was developed for the determination of arsenic, bismuth, antimony and tin
in low-alloy steels. Four standard reference materials from NIST were dissolved in 10 mL
aqua regia without heat. Good agreement was obtained between experimental values and
certified values for arsenic, bismuth, antimony and tin. The method was developed to
provide the analyst with the opportunity to determine the analytes by using simple aqueous
standards to prepare calibration lines. Within the limits of the samples analyzed, the method
developed is independent of matrix.
