期刊
ANALYTICAL CHEMISTRY
卷 93, 期 38, 页码 13072-13079出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.1c03019
关键词
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资金
- National Natural Science Foundation of China [22074161, 21976213]
- Science and Technology Planning Project of Guangzhou City [202102080167]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515010107]
- National Key Research and Development Program of China [2019YFC1606101]
- Research and Development Plan for Key Areas of Food Safety in Guangdong Province of China [2019B020211001]
- State Key Program of National Natural Science of China [22134007]
The study developed a rapid and accurate strategy for simultaneous quantification of trace multiple antibiotic residues in complex aquatic samples by surface-enhanced Raman scattering (SERS) technique. The membrane substrate exhibited good uniformity, reproducibility, stability, and SERS activity, providing enhanced sensitivity and selectivity. The integration of multitarget separation, enrichment, and in situ detection significantly improved the selectivity, sensitivity, accuracy, and detection throughput for real-sample analysis.
Rapid and accurate analysis of multiple targets in complex samples is still a big challenge in the fast detection field. Herein, we developed a rapid and accurate strategy for simultaneous quantification of trace multiple antibiotic residues in complex aquatic samples by surface-enhanced Raman scattering (SERS) using a Ti3C2Tx/DNA/Ag membrane substrate. This membrane substrate was proven to have good uniformity, reproducibility, stability, and SERS activity by a series of characterizations. Also, this substrate combined excellent electromagnetic enhancement and chemical enhancement effects, which endowed it with good sensitivity and selectivity during SERS analysis. It achieved the integration of multitarget separation, enrichment, and in situ detection, which significantly improved the selectivity, sensitivity, accuracy, and detection throughput by membrane substrate coupling with SERS for real-sample analysis. Finally, this rapid SERS analysis strategy was successfully applied to the simultaneous quantification of trace nitrofurantoin (NFT) and ofloxacin (OFX) in aquatic samples. It was observed that trace NFT and OFX were actually detected and simultaneously quantified to be 8.0-13.7 and 42.6-49.1 mu g/kg in aquatic samples, respectively, with good recoveries of 88.0-107% and relative standard deviations of 0.3-5.5%. The results were verified by a traditional high-performance liquid chromatography method with relative errors of -9.8 to 5.3%. This strategy provided a methodological reference for accurate SERS quantification of multiple targets in complex samples.
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