Abstract

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.

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J. T. Shapiro and R. P. Madden
J. Opt. Soc. Am. 58(6) 771-775 (1968)

Photometric Papers Sensitive Only to Short Wave Ultraviolet

Lyman Chalkley
J. Opt. Soc. Am. 42(6) 387-392 (1952)

The Transmission of Ultraviolet Radiation Through Chinese Window Papers

Ch’en Shang-yi, Meng Chao-ying, and William Band
J. Opt. Soc. Am. 25(3) 67-70 (1935)

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D. M. Smith and T. A. Wiggins
Appl. Opt. 11(11) 2680-2683 (1972)

Determination of point-spread function of paper substrate based on light-scattering simulation

D. Modrić, K. Petric Maretić, and Aleš Hladnik
Appl. Opt. 53(33) 7854-7862 (2014)