Hanna-instruments HI 903 Manual do Utilizador descarregar pdf (Página 213)

TITRATION THEORY

5 CALCULATIONS

5.1 Equations Used in Volumetric Karl Fischer Titrations

5.1.1 Calculation of water content as % mass from samples measured by mass

C sample Concentration of Sample (% w/w)

V titrant Volume of Titrant (mL)

Titer Titrant Titer (mg/mL)

m sample Mass of Sample (g)

5.1.2 Calculation of water content as % mass from samples measured by volume

C sample Concentration of Sample (% w/w)

V titrant Volume of Titrant (mL)

Titer Titrant Titer (mg/mL)

V sample Volume of Sample (mL)

d sample Density of Sample (g/mL)

5.1.3 Calculation of water content as % volume from samples measured by

volume

C sample Concentration of Sample (% v/v)

V titrant Volume of Titrant (mL)

Titer Titrant Titer (mg/mL)

V sample Volume of Sample (mL)

d water Density of Water at Analysis Temperature (g/mL)

5.1.4 Calculation of water content as % mass subtracting Background Drift

Rate

C sample Concentration of Sample (% w/w)

V titrant Volume of Titrant (mL)

Titer Titrant Titer (mg/mL)

Drift Background Drift Rate (µg/min)

t Titration Duration (min)

m sample Mass of Sample (g)

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