China Dairy
|
2025, (9): 129-134
• QUALITY CONTROL •
Application of Anodic Stripping Voltammetry for Rapid Detection of Lead Content in Liquid Milk
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LIU Yanling, DUAN Hongli, YU Ze, LIU Changyu, LIU Jiangmei, LI Lifen, ZHANG Hao, HOU Lingqin
Affiliations
doi: 10.12377/1671-4393.25.09.19
Outline
[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.
anodic stripping voltammetry(ASV)
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rapid detection technology
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milk and dairy product
/
lead
/
method validation
刘艳伶, 端红丽, 于泽, 刘长玉, 刘江梅, 李利芬, 张昊, 侯令芹.
阳极溶出伏安法在液态乳中铅含量快速检测的应用研究.
中国乳业,
2025
,
(9)
: 129
-134
.
DOI: 10.12377/1671-4393.25.09.19
LIU Yanling, DUAN Hongli, YU Ze, LIU Changyu, LIU Jiangmei, LI Lifen, ZHANG Hao, HOU Lingqin.
Application of Anodic Stripping Voltammetry for Rapid Detection of Lead Content in Liquid Milk[J].
China Dairy,
2025
,
(9)
: 129
-134
.
DOI: 10.12377/1671-4393.25.09.19
Year 2025 volume Issue 9
22
5
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Article Info
doi: 10.12377/1671-4393.25.09.19