Method and apparatus for the spectrophotometric assay of...

Details Method and apparatus for the spectrophotometric assay of... Method and apparatus for the spectrophotometric assay of...

G - Physics

01

N

G01N 21/35 (2006.01) G01N 21/03 (2006.01)

Patent

CA 2109568

The apparatus comprises a pump (1) to draw liquid (5), a filter (3) with two outlets (8 and 9): outlet (8) is for bleeding and outlet (9) is for filling the cell (1, 2). Interferometry measurements are made at a temperature from 35 degrees to 50 degrees C (fluctuation 0.2 degrees C) and at a maximum relative humidity of 0.2%. Absorption curves a(f) are determined in reference to the matrix and standard equations are used to calculate the concentrations of components to be added.

L'appareil comporte une pompe (1) pour aspirer le liquide (5), un filtre (3) à deux sorties (8) et (9): la sortie (8) est pour la purge et la sortie (9) est pour le remplissage de la cellule (1,2). Des mesures interférométriques sont effectuées à une température de 35° à 50 °C (fluctuation 0,2 °C) et à une humidité relative maximale de 0,2 %. Des courbes d'absorbance a(f) sont déterminées par rapport à la matrice puis les concentrations des composantes à doser sont calculées à l'aide des équations étalons.

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