Plant leaves are dried at 80℃, pulverized, then extracted withdistilled water and filtered. The filtrate is directly measured with automatic po-tentiometer tirration method to determine the chloride content. The recovery rateis more than 88%, the variation range less than 5%. The standard sample varia-tion is 0.01~0.09. The results from the measuring with Volhard method andautomatic potentiometer titration method are approximately the same. The operationof the latter is simpler and easier. Automatic potentiomter titration method isuseful ...
