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a-萘酚试验及盐酸-镁粉试验是检查中草药成分的常用方法。但是,操作中的加液顺序,国内许多专著、教科书所述各异,甚至在同一本书的不同章节里,对同一试验的加液顺序的要求也不同。例如,专著中第81页,第357页分别载有α-萘酚试验,但加液顺序正相反。实践证明,不同的顺序会影响实验结果。以下简述浅见。
The a-naphthol test and the hydrochloric acid-magnesium powder test are common methods for examining Chinese herbal ingredients. However, the order of dosing in operation is different in many monographs and textbooks in China. Even in different chapters of the same book, the requirements for the addition sequence of the same experiment are different. For example, the monograph, page 81, page 357 contains the α-naphthol test, respectively, but the order of addition is the opposite. Practice has proved that different sequences will affect the experimental results. The following is a brief summary.