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中国药典(1977年版)收载了中药紫石英、花蕊石和硫黄,但无鉴别方法。为了避免品种混乱,确保疗效和用药安全,提出鉴别方法如下: 一、紫石英紫石英为立方晶系萤石的矿石,主含氟化钙,可按下法进行鉴别。1.氯的鉴别取本品细粉约30mg,置干燥试管中,加二氧化硅粉约30mg和硫酸10滴。另取带塞的细玻管沾取水1滴,塞置试管中部,小心加热试管底部,水滴产生白色浑浊。2.钙的鉴别取本品细粉0.1g,置烧杯
The Chinese Pharmacopoeia (1977 edition) contained Chinese medicines amethyst, cassia and sulfur, but no identification method was available. In order to avoid confusion and ensure the efficacy and safety of drugs, the identification methods are as follows: 1. Amethyst amethyst is a cubic fluorite ore containing calcium fluoride, which can be identified as follows. 1. Identification of chlorine Take about 30mg of fine powder of this product and set it in a dry test tube. Add about 30mg of silica powder and 10 drops of sulfuric acid. In addition, take a thin glass tube with a stopper and dip a drop of water. Place the middle of the tube and carefully heat the bottom of the tube. The water droplets are white and cloudy. 2. The identification of calcium to take this product fine powder 0.1g, home beaker