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冰冻浓缩技术是依据在正常冰冻中杂质在液-固两相中分配不同而达到分离浓缩的一种方法.本文将含金属离子的稀溶液或自来水放入冰箱速冻层进行冰冻,使溶液部分冻冰,考察了冰冻后留在水相中金属离子量,试验证明,稀溶液中的金属离子,或自来水中的痕量金属离子都能定量浓缩干水相,这一分离浓缩技术,溶液中溶质的价态和状态没有受到破坏,由于不加入试剂、不加热煮沸,又在密闭系统中进行,所以,将污染和损失减少到最低限度,这是一种无破坏无污染的分离浓缩技术,可作多元素的同时浓缩测定和实验室制备少量纯冰纯水用,对研究稀溶液中溶质的价态和状态提供了一种有效的浓缩技术.
Freeze concentration technology is based on the normal freezing of impurities in the liquid - solid two-phase distribution to achieve a separation and concentration of a method.In this paper, dilute solution containing metal ions or tap water into the freezer frozen layer to make the solution partially frozen Ice to examine the amount of metal ions remaining in the aqueous phase after freezing. Experiments show that the metal ions in dilute solution or trace metal ions in tap water can quantitatively concentrate the dry water phase. This separation and concentration technique, solute Of the valence and status of the non-destructive, because it does not add reagents, without heating boil, but also in a closed system, so the pollution and loss to a minimum, this is a non-destructive pollution-free separation and concentration technology, As a multi-element simultaneous concentration determination and laboratory preparation of a small amount of pure ice pure water, the concentration of solute in the study of the valence state and state provides an effective concentration technology.