论文部分内容阅读
近年来,中药中重金属残留问题越来越被人们所关注,国际中药材交易对重金属含量均有明确规定。原子荧光法是我国具有自主知识产权的痕量分析技术,具有低成本、高效率的特点,为此,笔者探讨了沙棘中砷、汞、铅含量的微波消解-原子荧光测定法。将沙棘(中科院新疆理化所提供)果实、叶、茎60℃烘干,粉碎。称取0.5 g粉末试样放入消解罐中,加水湿润,加入硝酸5 ml,摇匀后加入过氧化氢2 ml,摇匀,盖上密封碗,装入消解罐,置于
In recent years, more and more attention has been paid to the problem of heavy metal residues in Chinese medicine. The content of heavy metals in international Chinese herbal medicines has been clearly defined. Atomic fluorescence spectrometry is a trace analysis technique with independent intellectual property rights in our country, which has the characteristics of low cost and high efficiency. Therefore, the author explores the determination of arsenic, mercury and lead in sea buckthorn by microwave digestion - atomic fluorescence spectrometry. Will seabuckthorn (Chinese Academy of Sciences, Xinjiang Institute of Physics and Technology) fruit, leaves, stems 60 ℃ drying, crushing. Weigh 0.5 g powder sample into the digestion tank, add water moist, add nitric acid 5 ml, shake after adding hydrogen peroxide 2 ml, shake, cover sealed bowl, load digestion tank, placed