甲苯法测定水分适合于下列哪种药材A.牛膝 B.党参 C.杜仲 D.石菖蒲 E.大青叶

作者: tihaiku 人气: - 评论: 0

问题甲苯法测定水分适合于下列哪种药材

选项 A.牛膝 B.党参 C.杜仲 D.石菖蒲 E.大青叶

答案 D

解析本法适合于含挥发性成分的药材。石菖蒲含挥发油，可用此法测定水分。

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