Tellurium - Agilent Technologies VGA 77 User Manual

VI
Se
be reduced to Se
Prepare the samples in 6-7 M hydrochloric acid (use of a lower acid
concentration will result in greater inter-element interferences), heat
at 70-90 °C for at least 10 minutes. Cool to room temperature before
analysis.
Reductant container:
Acid container:

Tellurium

The presence of potassium iodide will severely suppress the
analytical response. Always ensure that the VGA 77 system is
completely free of potassium iodide before performing tellurium
determinations.
To avoid contamination, it is recommended that you dedicate a separate module
NOTE
to the analysis of those elements requiring pre-reduction with KI (ie., As or Sb).
VI
Te
be reduced to Te
heat at 70-90 °C for at least 10 minutes and cool to room temperature
before analysis.
Reductant container:
Acid container:
Agilent Vapor Generation Accessory VGA 77 and VGA 77P User's Guide
is not quantitatively recovered by hydride generation and must
IV
by warming with concentrated hydrochloric acid.
is not quantitatively recovered by hydride generation and must
IV
. Prepare the samples in 6-7 M hydrochloric acid,
NaBH 0.6% w/v
4
NaOH 0.5% w/v
10 M HCl
NaBH 0.6% w/b
4
NaOH 0.5% w/v
5 M HCl (Higher acid concentrations
will reduce the analytical signal.)
Analytical Notes
67