用英国药典和B.P.C法定的方法测定有机酸盐是比较费时的,且反应激烈。英国药典测定法是先使有机酸盐成为碳酸盐,然后利用滴定已经生成的碳酸盐而间接测得阳离子的量。利用离子交换法能直接测得有机酸盐中阴离子的含量,而其他方法不能方便地或准确地直接滴定,虽然阳离子交换比较费时,但由于能直接滴定,故离子交换法对于有机酸盐中阴 The determination of organic acid salts by the British Pharmacopoeia and the B. P. C. method is time-consuming and highly reactive. The British Pharmacopoeia assay is to first make the organic acid salt a carbonate and then indirectly measure the amount of the cation by titration of the carbonate that has formed. The use of ion exchange method can directly measure the content of anions in organic acid salts, and other methods can not be directly or directly titrated easily, although the cation exchange time-consuming, but because of direct titration, so the ion exchange method for the organic acid salt shade