3种大宗中药材中二氧化硫残留量的测定

The Detection of Sulfur Dioxide Residues in 3 Kinds of Staple Chinese Herbal Medicines

目的:了解目前几种大宗中药材中药材中二氧化硫残留情况。方法:采用酸蒸馏碘滴定法,对河南、山东、广西产山药;甘肃兰州、湖南长沙、湖南龙山产百合及湖南邵东产玉竹进行了二氧化硫残留量的测定。结果:二氧化硫含量在200-500μg/g的样品有4个批次,二氧化硫含量在501-1 000μg/g的样品有2个批次,其中超过国际食品法典委员会规定的1 000μg/g限度的有2个批次,最高可达1 466.9μg/g。结论:目前中药材硫磺熏蒸非常普遍、程度不一,应引起重视。

Objective To understanding of sulfur dioxide residues in several staple Chinese herbal medicines.Method detected of sulfur dioxide residues separately in Yam from Henan,Shandong and Guangxi;Lily from Gansu Lanzhou,Hunan Changsha and LongShan of Hu nan;and Radix polygonati officinalis from Hunan Shaodong with the method of Acid distilling and iodine titrating.Result The content of sulfur dioxide between 200-500μg/g in 4 batche of samples,the content of sulfur dioxide between 501-1 000μg/g in 2 batche of sam ples,which exceeded the regulation of International Codex Alimentarius Commission for the limit of 1 000μg/g in 2 batche of samples,one of which up to a maximum of 1 466.9μg/g.Conclusion The fumigation in sulfur for Chinese herbal in varying degrees,is very common at present,people should pay a lot attention to it.