PROCESS FOR QUANTITATIVELY DETERMINATION OF TOTAL CHLORINE IN A MATRIX

摘要

The process comprises the succession of the following phases: dosing of a pre-established quantity of the liquid matrix in a controlled atmosphere vial in which sodium biphenyl or sodium naphthalene is micro-dispersed in a glycol or a derivative of glycol; dosing in the vial of an extracting acid solution of KNO3; filtration of the extracting solution through a first filter with a pore diameter < 1 µm in a first container containing a pre-dosed solution of silver nitrate which causes the precipitation of the chlorides; and quantitative determination of the residual silver iones, whose quantity is correlated with the total chlorine present in the matrix.