公开(公告)号：EP2646801A1

公开(公告)日：2013-10-09

申请号：EP10787733.4

申请日：2010-11-30

Applicant: FOSS Analytical A/S

Inventor： THOMSEN, Henrik

IPC: G01N21/35 ,  C12G1/04 ,  G01N33/00 ,  G01N33/14

CPC classification number: G01N21/59 ,  G01N21/3504 ,  G01N33/0042 ,  G01N33/146 ,  Y02A50/248

Abstract: A system for the measurement of free and bound SO2 in a liquid beverage product sample comprising a sample container having a volume sufficient to provide a headspace above the sample into which a gas can pass; a gas flow system adapted to extract gas from the headspace and recirculating it back into the liquid volume; a measurement system configured to monitor a time dependent evolution of SO2 in gas from the gas flow system; and a dosing apparatus fluidly connected to the container to supply an hydrolysis reagent thereto. A heater unit is provided for supplying thermal radiation into the container to elevate the temperature of sample therein sufficient to facilitate the hydrolysis reaction and a signal processor operates to deconvolute the monitored evolution to generate an indication of the concentration of each of the free SO2 and the total SO2 content of the sample.