Boosting the Quantitative Inorganic Surface-Enhanced Raman Scattering Sensing to the Limit: The Case of Nitrite/Nitrate Detection

被引：44
|
作者：
Correa-Duarte, Miguel A. [1 ,2 ]
Pazos Perez, Nicolas [3 ,4 ,5 ]
Guerrini, Luca [3 ,4 ,5 ]
Giannini, Vincenzo [6 ]
Alvarez-Puebla, Ramon A. [3 ,4 ,5 ,7 ]
机构：
[1] Univ Vigo, Biomed Res Ctr CINBIO, Dept Quim Fis, Vigo 36310, Spain
[2] Univ Vigo, Inst Biomed Res Vigo IBIV, Vigo 36310, Spain
[3] Univ Rovira & Virgili, Dept Quim Fis & Inorgan, E-43007 Tarragona, Spain
[4] Ctr Tecnol Quim Cataluna, Tarragona 43007, Spain
[5] Medcom Adv SA, Viladecans Bussines Pk, Viladecans 08840, Barcelona, Spain
[6] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England
[7] ICREA, Barcelona 08010, Spain
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2015年 / 6卷 / 05期
基金：
欧洲研究理事会;
关键词：
NITRITE; SILVER; IONS; SPECTROSCOPY; NANOPARTICLES; SPECIATION; MOLECULES; CHEMISTRY; BIOLOGY; NITRATE;
D O I：
10.1021/acs.jpclett.5b00115
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A high-performance ionic-sensing platform has been developed by an interdisciplinary approach, combining the classical colorimetric Griess reaction and new concepts of nanotechnology, such as plasmonic coupling of nanoparticles and surface-enhanced Raman scattering (SERS) spectroscopy. This approach exploits the advantages of combined SERS/surface-enhanced resonant Raman Scattering (SERRS) by inducing the formation of homogeneous hot spots and a colored complex in resonance with the laser line, to yield detection limits for nitrite down to the subpicomolar level. The performance of this new method was compared with the classical Griess reaction and ionic chromatography showing detection limits about 6 and 3 orders of magnitude lower, respectively.
引用
收藏
页码：868 / 874
页数：7
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