Abstract: [Objective]To establish a method for detecting lead content in milk and dairy products based on anodic stripping voltammetry（ASV）,and systematically evaluated the applicability of this method in raw milk,sterilized milk,modified milk,and fermented milk matrices.[Method]By optimizing the pre-treatment conditions,matrix interference was significantly reduced.A systematic and comprehensive method validation was conducted using the national standard substance（GBW08619） confirming that the method had good accuracy.[Result]The detection limit（LOD） and quantification limit（LOQ）of raw milk,sterilized milk,modified milk and fermented milk were 0.005 mg/kg and 0.01 mg/kg,respectively,which were at the same level as “GB 5009.12-2023 National Food Safety Standard - Determination of Lead in Foods”.The spiked recovery experiment showed that the recovery rate in different matrices were 70%~115%（spiked level of 0.01~0.04 mg/kg）.The precision test showed that the precision in different matrices ranged from 3.32% to 18.59%.[Conclusion]This method was easy to operate and highly sensitive,and was suitable for the rapid screening and quantitative analysis of trace lead in dairy products,providing reliable technical support for food safety risk monitoring.

Key words: anodic stripping voltammetry（ASV）, rapid detection technology, milk and dairy product, lead, method validation