Metrohm IC Net 2.2 Manual do Utilizador descarregar pdf (Página 177)

7.5 Calibration and quantification

IC Net 2.2

169

7.5.7 Calibration curve

IC NET / Method / Calibration / Graphs

Selecting this menu item or clicking on <Graphs> in the compo-

nent table opens the Component window.

In this window the results of the calibration are shown for each

component together with the calibration curve. The parameters

for calculating the calibration curve can also be entered here.

Calibration results and curve

Analytical expression A line above the calibration curve looking

like Q = k

+ k

xA + k

This formula is used for approximation of

the calibration curve.

RSD RSD (Residual Standard Deviation) value to

evaluate the error of calibration curve ap-

proximation.

Corr. Correlation coefficient value is available

only in the case of linear calibrations with-

out weighting of data points.

Calibration curve Plot of measured calibration points and

calculated calibration curve.

k0, k1, k2, k3 Calibration coefficients k

, k

and k

(coefficients of the calibration formula).

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Metrohm IC Net 2.2 Manual do Utilizador Página 177