Dodecanol abietate succinic anhydride was synthesized from abietic acid.The structures of products were characterized by spectrum of IR，HNMR and MS.

枞酸为起点，合成了十二醇酯琥珀酸酐，采用红外光谱、核磁共振波谱及质谱对中间产物及终产物进行了结构表证。

The metol content and the hydroquinol content in developer solution were analyzed by potential spectrum method.During this analysis, two components were continuously titrated at the same time.

采用一种新的化析方法电位波谱法析显影液中的米吐尔和对苯二酚的含量,在研究过程中实现了这两种成的连续滴定析。