摘要
建立大葱中Fe、Mn、Zn、Cu等4种元素的电感耦合等离子体质谱（ICP-MS）测定方法。样品采用微波消解,以Ge为内标,ICP-MS测定各元素含量。结果表明,该法精密度RSD值1.01%～1.33%,回收率98.8%～101.5%,检出限0.013～0.035？g/m L。该法灵敏、准确、快捷,符合大葱中微量元素测定要求。
Determination method of inductively coupled plasma mass spectrometry（ICP-MS） of 4 elements including Fe、Mn、Zn、Cu in Welsh Onion was established. The sample was digested by microwave and the content of each element was determined by Ge as internal standard and ICP-MS. The results showed that the precision of this method was 1.01%～1.33%, the recovery rate was 101.5%～98.8%, and the detection limit was 0.013～0.035 g/m L. This method was sensitive, accurate and fast, meeting the requirements for the determination of trace elements in Welsh Onion.
出处
《广州化学》
CAS
2016年第4期68-70,共3页
Guangzhou Chemistry
关键词
微波消解
电感耦合等离子体质谱法
大葱
微量元素
microwave digestion
inductively coupled plasma mass spectrometry
onion
trace element
