University Chemistry ›› 2021, Vol. 36 ›› Issue (9): 2101049.doi: 10.3866/PKU.DXHX202101049

Special Issue: 分析化学课程与实验教学

• Study and Reform of Chemical Education • Previous Articles     Next Articles

Discussion on Matrix Modifiers in the Determination of Heavy Metal Ions in Environmental Water Samples by Graphite Furnace Atomic Absorption Spectrometry

Anna Tang(), Rongzhi Gao, Ke Wang   

  • Received:2021-01-26 Accepted:2021-02-25 Published:2021-03-11
  • Contact: Anna Tang


Adding matrix modifier is a common and efficient method to eliminate chemical interferences in graphite furnace atomic absorption spectrometry (GFAAS). The students' understanding of the choice and mechanism of matrix modifier is only at the textbook level. In the light of this, the multiple teaching modes are adopted to make students' learning activities changed from passive to active. Through literature investigation, group discussion, induction and summary and subsequent student experiments, the matrix modifier for the determination of heavy metal ions in environmental water samples by GFAAS is discussed in depth.

Key words: Graphite furnace atomic absorption spectrometry, Matrix modifier, Environmental water sample, Course ideology and politics, Induction and summary


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