色谱保留值法测定碘和硫在超临界流体CO_2中的溶解度

Determination of Solubilities of Iodine and Sulfur in Supercritical CO_2 Using Chromatographic Retention Method

用色谱保留值法测定了单质碘和单斜硫在不同温度及压力下在超临界二氧化碳中的溶解度，并用超临界平衡饱和萃取法验证了测定值，结果满意．

Solubilities of iodine and monoclinic sulfur in supercritical CO2 with different pres-sures and temperatures were determined using chromatographic retention method- Solubility curves of iodine within 11-35 MPa pressure range at temperatures 313. 2, 318. 2, 323. 2,328.2 K and monoclinic sulfur within 8. 5-35 MPa pressure range at 308. 2, 318. 2, 328. 2 K, were described. Some of the results were compared with the date obtained from the methods of SFE spectrometric/gravimetric.