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用槲皮素光度法测定锡,对于含量范围在0.05～0.x%的试样可直接测定,但对于低含量锡的测定,此法灵敏度不够。因此,我们设想用有机溶剂萃取锡-槲皮素络合物,以达到富集的目的。本文对甲基异丁基酮萃取锡-槲皮素的方法作了试验,并应用于纯镉中锡的测定,方法灵敏度为2.5×10~(-4)%。
Quercetin spectrophotometric determination of tin, for the range of 0.05 ~ 0.x% of the sample can be directly measured, but for the determination of low levels of tin, the sensitivity of this method is not enough. Therefore, we envisioned the extraction of tin-quercetin complexes with organic solvents for the purpose of enrichment. In this paper, the method of extracting tin - quercetin by methyl isobutyl ketone was tested and applied to the determination of tin in pure cadmium. The sensitivity of the method was 2.5 × 10 ~ (-4)%.