FIELD: physics.
SUBSTANCE: proposed method comprises forcing analysed product into chromatograph first circuit to define carbon sulphide at its concentration exceeding 0.1 wt % and, at a time, into second circuit at carbon sulphide concentration lower than 0.1 wt %. First circuit comprises piston-type metering valve and packed columns arranged in heated temperature-controlled cabinet and filled with polymer adsorbent, 0.1-1.5 m-long precolumn and 0.5-5 m-long main column, and heat conductivity detector. Second circuit comprises piston-type metering valve, packed capillary columns arranged in heated temperature-controlled cabinet and filled with polymer adsorbent, 0.1-1.5 m-long precolumn and 15-50 m-long main column with their ID making 0.23-0.32 mm, and sulfur-selective detector. Metering valves are arranged sequentially in both circuits along sample feed direction.
EFFECT: shorter easier process.
5 cl, 1 dwg, 2 tbl, 1 ex
