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药物中水分的测定一般是根据中国药典规定,在105℃控温烘箱中加热5h,称量至恒重,然后计算失去的水分。目前微波加热在化学领域已得到了广泛的应用,用微波加热对药物中水分的测定,已有报道。但是用微波加热测定灯盏花素中水分,与药典方法相比,微波法具有操作简便,快速,低耗能的优点。本法用微波加热法测定灯盏花素的水分含量,并与药典法进行比较,结果满意。 1 试验方法将称量瓶烘至恒重(W_0),称取样品1.0000g于
Determination of moisture in medicine is generally based on the provisions of the Chinese Pharmacopoeia, in a controlled temperature oven 105 °C heating 5h, weighed to constant weight, and then calculate the loss of water. At present, microwave heating has been widely used in the chemical field. The determination of moisture in medicine by microwave heating has been reported. However, microwave heating is used to determine the moisture in breviscapine. Compared with the pharmacopoeia method, the microwave method has the advantages of simple operation, rapid and low energy consumption. This method uses microwave heating method to determine the moisture content of breviscapine, and compared with the pharmacopoeia method, the results are satisfactory. 1 Test method Bake the weighing bottle to a constant weight (W_0) and weigh a sample of 1.0000g.