In order to improve the detection efficiency of heavy metal lead in tea,the heavy metal lead content in tea was determined according to the national standard GB 5009.12-2017 National Food Safety Standard for the Determination of Lead in Food in this study.The results show that the detection limit meets the standard requirements,the mass concentration of biological component standard substances meets the requirements,and the precision RSD is less than 5%.Therefore,this graphite furnace atomic absorption spectroscopy method used in this experiment meets the standard requirements and can meet the detection of heavy metal lead in tea.
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