Quantitative test for sulfur dioxide in orange juice

[flumbie]

Is there a quantitative test for the amount of sulfur dioxide in orange juice. Nothing too complicated, I am only in year 11. Can it be done using titration?

 

[BigFairy]

yes, although i can't remember the corrrect procedure from top of my head. It goes something like this, Sample is heated(with H+) with N2 bubbling thru the mixture, the gas produced is collected in a separate flask with hydrogen peroxide and the subsequent solution is titrated with NaOH.

 

[flumbie]

anyone care to elaborate? a link maybe? i seem to be having trouble finding anything with google. many thanks in advance