浮选富集是利用一些重金属离子与ＫＩ、亚甲基蓝生成络合物Ｍ -Ｉ -ＭＢ体系 ,络合物浮选于水相和有机相之上 ,弃去液相 ,所得的浮选物富集了溶液中的重金属。由于浮选技术和溶剂萃取不同 ,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 ,提高了检测灵敏度。过去该 Flotation enrichment is the use of some heavy metal ions and KI, methylene blue to generate complexes M-I -MB system, the complex flotation in aqueous and organic phase, the liquid phase is discarded, the resulting flotation enriched The solution of heavy metals. Due to the different flotation technology and solvent extraction, it has little to do with the volume of water phase and organic phase, so the sampling volume is large and the enrichment multiple is high, which improves the detection sensitivity. The past