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根据反相色谱法及离子交换色谱法的原理，研制了一种固相萃取小柱，建立了筛分系统，可以同时完成对复杂体系中酸性、中性及碱性药、毒物的一次革取净化及富集，适应于系统毒物及药物筛分工作的需要。并对筛分柱的草取机理进行了初步的实验论证。
According to the principle of reversed-phase chromatography and ion-exchange chromatography, a solid-phase extraction cartridge was developed and a screening system was established to simultaneously remove the acid, neutral and alkaline drugs and the poison in the complex system Purification and enrichment, to adapt to the system of drug and drug screening needs. The preliminary experimental demonstration was made on the mechanism of grazing by sieving column.