Abstract
Polaroid-Land Type 46-L Projection Film is investigated as a medium for recording optical spectra for the purpose of qualitative and quantitative spectrochemical analysis The film's high spectral sensitivity extends from 3000 to 6000 A In the analytically important 3000–4000 A region, emulsion contrast is found to be adequate and reasonably constant, gamma averages to about 23 and is reproducible to within ±0 1 from frame to frame Speed is sufficient for nearly all spectrochemical purposes Resolution of at least 30 lines/mm is obtainable. Analytical precision resulting in a coefficient of variation of less than ±5% indicates that Polaroid films are likely to find some utility in quantitative as well as qualitative analysis.
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