残留物(化学)
化学
检出限
青霉素
欧洲联盟
最大残留限量
分析化学(期刊)
色谱法
农药残留
抗生素
杀虫剂
有机化学
业务
经济政策
生物
生物化学
农学
作者
Yongliang Chen,Xiuling Li,Ming Yang,Libin Yang,Xiaoxia Han,Xin Jiang,Bing Zhao
出处
期刊:Talanta
[Elsevier]
日期:2017-05-01
卷期号:167: 236-241
被引量:62
标识
DOI:10.1016/j.talanta.2017.02.022
摘要
The antibiotic residue in animal source foods (milk, meat, etc.) is threatening people's health due to its abusing in livestock breeding more and more seriously. In this study, a simple and sensitive SERS method coupled with a two-step pretreatment process of sample was proposed for the residue detection of penicillin G (PENG) in real milk sample. It can be found that the two-step pretreatment process of sample is an essential procedure for the successful detection of PENG residue in milk, which can effectively avoid interference from other components in the sample and achieve the trace-level detection of PENG residue by SERS. Under the optimal test conditions, the limit of detection of PENG residue is 2.54×10-9mol/L (equal to 0.85μg/kg), which is lower than the standard of the European Union (4μg/kg). And, there is a good linear relationship (R2=0.9902) in the concentration range of 1.0×10-8~1.0×10-3mol/L. By this method, the recovery of PENG residue ranges from 76% to 97% with relative standard deviation between 4.8% and 2.1%. The proposed SERS method can be effectively applied for determination of PENG residue in milk.
科研通智能强力驱动
Strongly Powered by AbleSci AI