Abstract
A rapid method for the determination of sulfur in the range of 0.5γ to 100γ in a liquid or gas sample has been presented.
The sample is heated in a hydrogen stream over a nickel-silica catalyst at 1200°C. Sulfur is converted to hydrogen sulfide and absorbed in a dilute zinc acetate-sodium hydroxide mixture. The absorbed sulfur is determined spectrophotometrically at 665mμ by the Methylene Blue method.
The precisions for micro-amount of sulfur are±0.1γ, ±1γ and ±2.5γ for 0.5, 10γ and 50γ of sulfur, respectively.
The suitable sample sizes are 0.2g to 0.5g for the liquid, and 100 to several hundred ml for the gas.
Depending on the character of the sample, an analysis requires 30 to 50 minutes.
Analytical results on town gas and butadiene are given.
