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本文用亚硝基-R-盐(NRS)与铑在加热条件下形成螯合物,以N_(263)-NRS的混合物为固定相,硅胶为载体,萃取色谱法分离富集痕量铑。用2.5m1 1 mol/L的HClO_4溶液洗脱铑-亚硝基-R-盐的螯合物直接进行比色测定。
In this paper, nitroso-R-salt (NRS) was used to form a chelate with rhodium under the condition of heating. The mixture of N_ (263) -NRS was used as the stationary phase and silica gel was used as the carrier. The trace rhodium was enriched by extraction chromatography. Colorimetric determination was performed directly with a chelate of rhodium-nitroso-R-salt eluted with 2.5 ml of 1 mol / L HClO 4 solution.