化学
多路复用
检出限
纳米技术
适体
纳米颗粒
磁性纳米粒子
再现性
色谱法
材料科学
生物信息学
分子生物学
生物
作者
Bing Liu,Shiya Zheng,Haitao Li,Junjie Xu,Hanyu Tang,Yi Wang,Yingchao Wang,Fei Sun,Xiangwei Zhao
出处
期刊:Talanta
[Elsevier]
日期:2021-10-11
卷期号:237: 122955-122955
被引量:29
标识
DOI:10.1016/j.talanta.2021.122955
摘要
Ultrasensitive, multiplex, rapid, and accurate quantitative determination of trace antibiotics remains a challenging issue, which is of importance to public health and safety. Herein, we presented a multiplex strategy based on magnetic nanoparticles and surface-enhanced Raman scattering (SERS) nanotags for simultaneous detection of chloramphenicol (CAP) and tetracycline (TTC). In practice, SERS nanotags based on Raman reporter probes (RRPs) encoded gold-silver core-shell nanostars were used as detection labels for identifying different types of antibiotics, and the magnetic nanoparticles could be separated simply by magnetic force, which significantly improves the detection efficiency, reduces the analysis cost, and simplifies the operation. Our results demonstrate that the as-proposed assay possesses the capacities of high sensitivity and multiplexing with the limits of detection (LODs) for CAP and TTC of 159.49 and 294.12 fg mL-1, respectively, as well as good stability and reproducibility, and high selectivity and reliability. We believe that this strategy holds a great promising perspective for the detection of trace amounts of antibiotics in microsystems, which is crucial to our life. Additionally, the assay can also be used to detect other illegal additives by altering the appropriate antibodies or aptamers.
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