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中国药典1985年版一部(以下称药典)对煅磁石要求用明煅法煅至红透、醋淬后,研为粗粉入药,每剂药量为9～30克,入药时要求先煎.目前此药在临床上应用时,有的要求先煎,有的又未强调煎的顺序,而且用药量也不同,有的每剂用10、20.30克,甚至50克.用药量差别较大,且有些炮制品的粒度又不合药典规定.笔者用邻菲啰林比色法测定此药在各次煎液中总铁和亚铁的含量,探讨其溶解行为,说明入药时又必先煎,且在炮制时应重视其粒度,以提高药品的利用率.充分发挥其临床疗效.
The Chinese Pharmacopoeia of the 1985 edition (hereinafter referred to as the Pharmacopoeia) required the calcined magnets to be calcined to a red and vinegar-quenched state after being calcined, and then the crude powder was used as a medicine. The dose per dose was 9-30 grams, and it was required to be fried first. At present, when this drug is used clinically, some require frying, some do not emphasize the frying sequence, and the dosage is different. Some use 10, 20.30 g or even 50 g. The dosage varies greatly. The particle size of some processed products is not regulated by the Pharmacopoeia. I used the phenanthrenephthalein colorimetric method to determine the content of total iron and ferrous iron in each decoction of this drug and to explore its dissolution behavior, indicating that it must be fried first. And in processing it should pay attention to its particle size in order to improve the utilization of drugs. Give full play to its clinical efficacy.