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水分的測定,无論在哪一个化驗部門都会常常遇到。根据各种样品性質的不同,我們可以有好几种测定水分的方法,今分別在下面加以討論。一、干燥法中国药典上所記載的药品在测定水分时,大都採用干燥法,干燥法分2种,一种是恒温干燥法,一般是指在105℃(或其他适宜温度)下干燥至恒重以求得水分,但所选擇的温度对此药品应無破坏作用。另一种是室温真空干燥法;适用于一些易于被热所分解,或受热易于揮發的药物。操作时將該类药品放在硫酸干燥器内真空干燥,这样可以在样品不被破坏的情
Determination of moisture, no matter in which laboratory departments will often encounter. Depending on the nature of the various samples, there are several ways of determining moisture that are discussed below. First, the drying method Chinese Pharmacopoeia recorded in the drug in the determination of moisture, most of the drying method, drying method divided into two kinds, one is constant temperature drying method, generally refers to 105 ℃ (or other suitable temperature) to dry to constant Heavy to get the water, but the temperature of the choice should be no damaging effect on this drug. The other is room temperature vacuum drying method; suitable for some easy to be thermally decomposed, or heated easily volatile drugs. Operation of such drugs on the dryer in a vacuum drying, so that the sample can not be destroyed