用溶剂和微量萃取剂组成的复合溶剂对催化裂化柴油络合萃取， 再结合碱洗来改善其安定性。
FCC LCO was treated by an solvent containing complexing agent followed with caustic washing in laboratoty.
对芦荟中微量金属元素的测定及芦荟有效成分的萃取方法的研究可以为人们正确使用芦荟提供一定的指导。
It will direct people to deal with Aloe correctly by studying on extraction method on the effective components and the determination of trace metal in the Aloe.
采用微量化学方法和固相萃取技术，建立了气相色谱法简单、快速、准确地测定荞头中甲胺磷农药残留量的方法。
A gas chromatographic method for the determination of methamidophos pesticide residues in the Allium Chinense was established by means of micro chemistry and solid phase extraction techniques.
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