An extractant- screening method with a vapor-liquid equilibrium apparatus in the extractive distillation was introduced. 介绍了萃取精馏萃取剂的一种实验筛选方法,汽液平衡仪直接法。
The self-dissolved products were made a kind of powdery yeast extractant by the use of the centrifugation and dry-spraying methods. 将自溶产物离心分离、雾干燥而制成一种粉状酵母抽提物。
Abstract By taking benzene as extractant and using gas chromatography-flame photometry to determine trace yellow phosphorus in wastewater, the result was good. 摘要研究了以苯为萃取剂,用气相色谱----火焰光度法测定废水中的微量黄磷。