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水试法鉴别中药材是依检品放入水中产生的特殊现象进行鉴别。此法操作简单,方便,准确,是重要的鉴别方法之一。本文记述了包括名贵中药材在内的十六种中药材水试鉴别方法及现象,如检品沉浮,溶解与否,颜色变化,透明度,膨胀系数,旋转与否,有无粘性,有无荧光,加酸碱后的变化等。这些现象常与药材中所含的某种化学成分有关。故此法鉴别具有科学性、准确性。
The water test method to identify the Chinese medicinal materials is based on the special phenomenon that the test products are put into the water for identification. This method is simple, convenient and accurate, and is one of the important methods of identification. This article describes the water testing methods and phenomena of 16 kinds of Chinese herbal medicines, including valuable Chinese herbal medicines, such as ups and downs, dissolved or not, color change, transparency, coefficient of expansion, rotation, presence or absence of viscosity, and presence or absence of fluorescence , After adding acid and alkali changes. These phenomena are often related to certain chemical components contained in medicinal herbs. Therefore, this method is scientific and accurate.