摘要
研究了电感耦合等离子体质谱（ICP-MS）测定植物中痕量稀土元素（REEs）的方法,详细讨论了测定稀土元素的质谱干扰及基体的抑制效应,采用代数法可有效地校止质谱干扰,内标法可以补偿基体的抑制效应,根据植物标准参考物质（GSV-2,GSV-4）的分析结果评价方法的准确性,在微波条件下,HF/HClO_4/HNO_3混合体系能快速而有效地分解植物样品,直接稀释后用ICP-MS测定其中的稀土元素。
Inductively coupled plasma-mass spectrometry (ICP-MS) has been employed to determine the concentrations of rare earth elements( REEs) in plants. For a prompt sample decomposition, a microwave digestion was successfully used with a mixture of HF/HCl4/HNO3. The potential of the method was evaluated by analysis of REEs in standard reference materials(GSV-2,GSV-4) .The results agree well with the certified values. Spectroscopic interferences and matrix suppression effects were studied in detail. Precision was better than 8 % . The experimental results show that the proposed method is simple, precise and accurate, and that the concentrations and distribution of REEs in plants vary with plant types.
出处
《环境化学》
CAS
CSCD
北大核心
1999年第3期274-279,共6页
Environmental Chemistry
基金
国家自然科学基金(批准号:29890280-1)
