探讨了棕黑腐植酸钠的水溶液和黄腐植酸水溶液发生胶凝转变为冻胶时,溶液浓度和所加电解质的种类和数量对胶凝的影响。实验结果指出,浓度越高越易于发生胶凝;浓度低于某一极限值,则不会发生,该极限浓度随阳离子价数增高而增大;引发胶凝所需加入的电解质的最小量,随阳离子价数增高而降低。 The effects of solution concentration and the type and amount of electrolytes added on the gellation were investigated when the aqueous solution of brown sodium humic acid and aqueous humic solution were changed into gel. Experimental results show that the higher the concentration, the more prone to gelation; concentration below a certain limit, it will not happen, the limit concentration increases with the cation valence increased; the minimum amount of electrolyte required to initiate gelling, With the cation price increases and lower.