标题:Construction of pure worm-like AuAg nanochains for ultrasensitive SERS detection of pesticide residues on apple surfaces
作者:Jiao, Anxin; Dong, Xuejian; Zhang, Hua; Xu, Linlin; Tian, Yue; Liu, Xiangdong; Chen, Ming
作者机构:[Jiao, Anxin; Dong, Xuejian; Zhang, Hua; Xu, Linlin; Tian, Yue; Liu, Xiangdong; Chen, Ming] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 更多
通讯作者:Chen, Ming;Chen, M
通讯作者地址:[Chen, M]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源:SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
出版年:2019
卷:209
页码:241-247
DOI:10.1016/j.saa.2018.10.051
关键词:Surface-enhanced Raman scattering; Nanomaterials; Laser materials; processing
摘要:Ultrasensitive detection of pesticide residues on agricultural products using surface-enhanced Raman spectroscopy (SERS) is of significant interest in food security. Herein, worm-like AuAg nanochains with highly interconnected ultrafine (similar to 6.2 nm) bimetallic particles were developed as an excellent SERS nanosensor via laser-assisted strategy. The SERS detection limit of thiram molecules on apple surfaces is about 10(-7) M (0.03 ppm), which is about 200 times lower than the maximal residue limit (MRL, 7 ppm) in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Importantly, the established excellent linear relationships between the SERS intensities and thiram concentrations can sensitively monitor the slight variation of pesticide residues in agriculture. (C) 2018 Elsevier B.V. All rights reserved.
收录类别:EI;SCOPUS;SCIE
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056194802&doi=10.1016%2fj.saa.2018.10.051&partnerID=40&md5=286c8f0d451fbe96a4901c40d8d8d590
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