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Ultraviolet Determination of Polystyrene in Paper Products
Volume 28, Number 3 (June 1974) Page 259-261
A quantitative method for determining polystyrene in paper sheets was developed. Polystyrene is determined by refluxing the sample with chloroform and ultraviolet measurement of the polymer in the extract. The percentage recovery was compared to the values obtained by a gravimetric procedure using hot chloroform extraction in a Soxhlet apparatus. The values obtained by both methods were found to be in good agreement.