微波等离子体炬原子发射光谱法测定米粉中微量元素——一个大学化学仪器分析实验的设计与实践

doi:10.3866/PKU.DXHX201704019

Abstract

Abstract:

A research type experiment of instrumental analysis was designed for undergraduates. In this experiment, microwave plasma torch-atomic emission spectrometer (MPT-AES) was used to detect trace metal elements (Ca, Cu, Fe and Mn) in flour samples. The experimental conditions, such as microwave power and supporting gas flow rate were optimized. Finally, the standard rice flour sample was detected under the optimum experimental conditions with a satisfying result. During this experiment students can learn and master the sample pretreatment method, the mechanism of atomic emission spectrum and optimization of the equipment testing.

Key words: Microwave plasma torch, Atomic emission spectrometry, Rice flour, Trace elements

MSC2000:

Guo-Dong FENG,Zhi-Guang SONG,Yu-Peng Guo. Determination of Trace Elements in Rice Flour Using Microwave Plasma Torch-Atomic Emission Spectrometry:Design and Practice of a College Chemistry Experiment of Instrumental Analysis[J].University Chemistry, 2017, 32(9): 41-45.

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Determination of Trace Elements in Rice Flour Using Microwave Plasma Torch-Atomic Emission Spectrometry:Design and Practice of a College Chemistry Experiment of Instrumental Analysis

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