文献类型：期刊文献

英文题名：A needle-like reusable surface-enhanced Raman scattering substrate, and its application to the determination of acetamiprid by combining SERS and thin-layer chromatography

作者：Kang, Yan[1];Wu, Ting[1];Han, Xiaozhen[1,2];Gu, Haixin[3];Zhang, Xin[4]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Ctr Anal & Test, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Jian Qiao Univ, Coll Jewelry, 1111 Huchenghuan Rd, Shanghai 201306, Peoples R China;[3]Shanghai Fire Res Inst MPS, 918 Minjing Rd, Shanghai 200438, Peoples R China;[4]Shanghai Inst Planned Parenthood Res, 2140 Xietu Rd, Shanghai 200032, Peoples R China

年份：2018

卷号：185

期号：11

外文期刊名：MICROCHIMICA ACTA

收录：;EI(收录号：20242616368164);WOS:【SCI-EXPANDED(收录号:WOS:000446885200003)】；

基金：This work was supported by Science and Technology Commissi on of Shanghai Municipality (No. 17142202600), Fundamental Research Funds for the Central Universities (No. 222201714047), Natural Science Foundation of Shanghai(18ZR1408100) and Scientific research project of MPS (2016JSYJC31, 2016JSYJB34).

语种：英文

外文关键词：Acetamiprid; Micro substrate; Carbon fiber needles; Electrochemical deposition; Dendrite-like gold

摘要：A micro surface-enhanced Raman scattering (SERS) substrate has been fabricated by electrochemical deposition of dendrite-like gold on carbon fiber needles (Au-CFNs). Scanning electron microscopy and energy dispersive spectroscopy were used to confirm the presence of the gold nanostructure on the CFNs. This substrate has a Raman scattering enhancement factor as high as 3.3 x 10 boolean AND 7 when using rhodamine 6G as the reporter molecule. The high SERS sensitivity is attributed to the massive hotspots on gold bulges that enhance the local surface plasmon resonance. The Au-CFN substrate was reproduced 10 times after electrochemically wiping off the analytes from the needle-like electrode. The substrate has attractive features such as convenient sampling, low sample dosage, and minimal invasion. It was applied, in combination with thin-layer chromatography, for the determination of acetamiprid on vegetables. The result was more accurate because the sample information of both the surface and the bulk can be obtained at the same time after inserting the tip of this needle substrate into the TLC plate. The limit of detection for acetamiprid is 0.05 mu g.mL(-1) and the linear range is 0.1-10 mu g.mL(-1).