浮选富集是利用一些金属离子与ＫＩ、亚甲基蓝生成络合物Ｍ—Ｉ—ＭＢ体系，该络合物浮选于水相和有机相之上，弃去液相，所得浮选物已将溶液中重金属富集了〔１、２〕。由于浮选技术和溶液萃取不同，它与水相和有机相体积关系不大，所以取样量大，富集倍数高，提高了灵敏... Flotation enrichment is the use of some metal ions and KI, methylene blue to generate complex M-I-MB system, the complex flotation in the aqueous phase and the organic phase, the liquid phase was discarded, the resulting flotation has been Heavy metals are concentrated in the solution [1,2]. Due to the different flotation technology and solution extraction, it has little to do with the volume of water phase and organic phase, so the sampling volume is large, the enrichment multiple is high, and the sensitivity is improved.