[Determination of elemental sulfur in liquefied gas by high performance liquid chromatography].

A method for the determination of elemental sulfur in liquefied gas has been developed in this work. First, the elemental sulfur existed in the liquefied gas was extracted by chloroform and the volatile petroleum hydrocarbons vaporized with a rate of ca. 500mL/min at low temperature in an ice water bath. The elemental sulfur dissolved in chloroform was then determined by high performance liquid chromatography. The operating conditions were: 300 x 4mm i.d. mu-Bondapak C18 column; 0.8mL/min methanol-water, 95/5 (V/V), as eluent and UV-254nm detector. The average recovery of elemental sulfur was 98.3% and the minimum detectable limit was 0.1ng/g.