液状酚及补骨脂酊治疗白癜风的疗效比较

对１４２例门诊白癜风患者，采用２０％补骨脂酊和９５％液状酚外用治疗，分组进行了临床对比。结果：补骨脂酊治疗组，治愈２０例（２８．９９％），显效１３例（１８．８４％），有效２２例（３１．８８％），无效１４例（２０．２９％），总有效率７９．７１％。液状酚对照组，治愈之例（５．７１％），显效３例（８．５７％），有效８例（２２．８６％），无效２２例（６２．８６％），总有效率３７．１４％。两组治愈率和总有效率经统计学处理，分别为Ｘ￣２＝５．２８２，Ｐ＜０．０２５；Ｘ￣２＝４．３１８，Ｐ＜０．０５。

Removal of Phenol from Dilute Solutions by Predispersed Solvent Extraction

Predispersed solvent extraction (PDSE) is a new method for separating solutes from aqueous solution by solvent extraction and one which has shown promise for extraction from extremely dilute solution very efficient and very quick. The use of colloidal liquid aphrons in predispersed solvent extraction may ameliorate the problems such as emulsion formation, reduction of interfacial mass transfer and low interfacial mass transfer areas in solvent extraction process. In present paper, colloidal liquid aphrons are successfully generated using kerosene as a solvent, tributyl phosphate(TBP) as an extractant, sodium dodecyl benzene sulphate(SDBS) as surfactant in aqueous phase and Tween-80 in oil phase. Extraction of phenol from dilute solution was studied by using colloidal liquid aphrons and colloidal gas aphrons in a semi-batch extraction column. It has been found that the PDSE process is more suitable for extraction of dilute solutions. It has also been discovered that the PDSE process has a great advantage over traditional single-stage extraction process.