微波消解-ICP-AES测定粉条中8种微量元素

ICP-AES determination of 8 trace elements in vermicelli with microwave assisted sample digestion

样品采用HNO3-H2O2微波消解处理，运用全谱直读电感耦合等离子体原子发射光谱法（ICP-AES）同时样品中8种微量元素（铝、铜、钴、锰、铬、铁、镉、锌）的含量。方法的检出限在0.001~1.795mg· L-1之间。相对标准偏差（n=9）小于9.0%。用于粉条中微量元素含量测定。结果对饮食有意义。

The sample of Vermicelli was digested with HNO3 and H2O2 in a microwave digestion system ,and the contents of Trace metals （Al,Cu,Co,Mn,Cr,Fe,Cd and Zn） in the sample were determined by ICP-AES. Detec-tion limits of the method found were in the range of 0.001~1.795mg·L-1. The relative standard deviations were less than 9.0%（n=9）.The proposed method was applied to the analysis of trace elements of Vermicel. giving content values of Vermicelli.