由于质子(H~+)或羟基(OH~-)直接或间接地参与大量溶液化学及电化学反应并影响到许多物质的物理与化学性质,故溶液酸度的控制就是许多化学、化工、生物以及医学研究、测量和应用中的重要问题。一般,溶液酸度都是通过缓冲体系来控制的。不同的目的,需用到不同的缓冲体系。现在缓冲体系已多达几十种。普通缓冲溶液都是 Because protons (H ~ +) or hydroxyl (OH ~ -) are directly or indirectly involved in a large number of solution chemical and electrochemical reactions and affect the physical and chemical properties of many substances, the solution acidity control is that many chemical, chemical, biological and Medical research, measurement and application of important issues. In general, solution acidity is controlled by a buffered system. Different purposes, need to use a different buffer system. The buffer system has now up to dozens of species. Ordinary buffer solution is