Metrohm 757 VA Computrace Bedienungsanleitung PDF herunterladen (Seite 189)

8.6 Voltammetric problems

757 VA Computrace – Software

179

Calibration with chemically non-isoformal standards

With both possible calibration techniques, it must be ensured that

the standards used for calibration are chemically isoformal with

the analytes. The standard substances must therefore have the

same valency (e.g. with Fe, Al) or complex formation form (e.g.

with As, Cr, Se) as the substances already present in the analysis

solution. If this is not the case the calibration can produce com-

pletely wrong results owing to the different peak voltages and

sensitivities.

1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 197 198

Keine Kommentare

Metrohm 757 VA Computrace Bedienungsanleitung Seite 189