The effect of instrumentation on the precision of retention indexes
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A new thermostat for isothermal gas chromatographic measurements, working within the range, 30–300°C, with a temperature stability of ±0.01°C, has been developed. Using this thermostat, a gas chromatograph has been assembled, with which the retention indexes of C5 to C8 hydrocarbons at 50°C on 0V-110 stationary phase were measured, with an average standard deviation, σ=0.1 l. The effect of the instrumentation, the influence of the column type and material and the film thickness of the stationary phase on the precision of the retention indexes are discussed.
KeywordsStandard Deviation Analytical Chemistry Organic Chemistry Hydrocarbon Stationary Phase
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