摘要
本文报道采用ＨＮＯ３＋Ｈ２Ｏ２微波溶样，ＩＣＰ－ＭＳ直接测定稻中１５种稀土元素。对微波溶样和等离子体质谱测定条件进行了优化选择。选用Ｒｅ作内标可补偿基体效应。方法检出限为７．０～２５．８ｐｇ／ｍＬ，稻壳加标回收率为９５～１０５％，ＲＳＤ为２．３～４．２％。方法快速、灵敏。
An ICP MS method for direct determination of 15 trace rare earth elements in rice was developed.Rapid and complete dissolution of rice was achieved by a microwave digestion procedure with concentrated nitric acid and hydrogen peroxide.The detection limits are 7 0-25 8pg/mL,the recoveries for spiked samples are 95-105%,RSDs are 2 3-4 2%.This method is rapid,sensitive and accurate.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1998年第5期583-586,共4页
Spectroscopy and Spectral Analysis
关键词
稻
微波溶样
ICP
MS
稀土元素
大米
Rice, Microwave digestion, ICP MS, Rare earth elements
