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为了测定中药材中二氧化硫或亚硫酸盐含量,试验以硫熏中药材(浙贝母、板蓝根、天冬和茯苓)为供试材料,分别采用《中国药典》(2010年版)中二氧化硫残留量测定方法与滴定-荧光光谱法对其进行二氧化硫残留量测定。结果表明:滴定-荧光光谱法与药典方法测定值有显著差异,采用滴定-荧光光谱法测定结果准确度更接近于中药材中二氧化硫的实际含量,具有较高的应用价值。
In order to determine the content of sulfur dioxide or sulfite in Chinese medicinal materials, the sulfur-smoked Chinese herbal medicines (Fritillaria cirrhosa, Radix Isatidis, Aspartic Acid and Poria cocos) were used as tested materials to determine the residues of sulfur dioxide in Chinese Pharmacopoeia (2010 edition) Method and titration - fluorescence spectrometry determination of sulfur dioxide residues. The results showed that there was a significant difference between the titration-fluorescence spectrometry and the pharmacopoeial method, and the accuracy of the titration-fluorescence spectrometry was closer to the actual content of sulfur dioxide in the Chinese herbal medicine, which has high application value.