Silver Nanoparticle-Based Surface-Enhanced Raman Spectroscopy for the Rapid and Selective Detection of Trace Tropane Alkaloids in Food

2019 ◽  
Vol 2 (10) ◽  
pp. 6592-6601 ◽  
Author(s):  
Jianglong Lu ◽  
Zhuanyun Cai ◽  
Yisong Zou ◽  
Deyin Wu ◽  
Aihua Wang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticle ◽  
Tropane Alkaloids ◽  
Surface Enhanced Raman Spectroscopy ◽  
Selective Detection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Single-molecule surface-enhanced Raman spectroscopy from a molecularly-bridged silver nanoparticle dimer

2008 ◽  
Vol 455 (4-6) ◽  
pp. 131-134 ◽  
Author(s):  
Blanka Vlčková ◽  
Martin Moskovits ◽  
Ioana Pavel ◽  
Karolina Šišková ◽  
Magdalena Sládková ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Molecule ◽  
Silver Nanoparticle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Molecule Surface

scholarly journals Sensitive and Selective Detection of New Red Colorant Based on Surface-Enhanced Raman Spectroscopy Using Molecularly Imprinted Hydrogels

2019 ◽  
Vol 9 (13) ◽  
pp. 2672 ◽  
Author(s):  
Jing Neng ◽  
Kaiyun Xu ◽  
Yan Wang ◽  
Kan Jia ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Selective Detection ◽  
Molecularly Imprinted ◽  
Au Nps ◽  
Relative Standard ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Active Substrate ◽  
Positively Charged

A polyacrylamide-based molecularly imprinted hydrogel (MIH) doped with positively charged gold nanoparticles (Au NPs) has been synthesized via a free radical polymerization of acrylamide (AM) aqueous solution containing positively charged Au NPs as a Raman active substrate, New Red colorant as a template molecule, N,N’-methylenebis(acrylamide) as a crosslinking agent, and potassium persulfate as an initiator. The Au NPs-doped MIHs were subsequently explored as a Raman active substrate for the sensitive and selective detection of New Red colorant via surface-enhanced Raman spectroscopy (SERS). The logarithmic intensity of the characteristic peak of New Red at 1572 cm−1 was proportional to the logarithmic concentration of New Red with a detection linear range of 1.64 × 10−6 to 1.64 × 10−4 M and a limit of detection (LOD) of 1.64 × 10−7 M. The recoveries ranged from 86.3% to 100.6% with a relative standard deviation (RSD) in the range of 2.3% to 7.7%. The RSD and recovery rates for the detection of New Red spiked in a sports drink sample were 1.8% to 7.7% and 91.0% to 97.1%, respectively. These results showed that SERS combined with MIHs as Raman active substrates could provide a sensitive, selective, and effective approach for the detection of the New Red colorant in beverage matrix.

Analysis of squaric acid and its complex with copper(II) ions adsorbed on silver nanoparticle surfaces by surface-enhanced Raman spectroscopy

2016 ◽  
Vol 87 ◽  
pp. 99-103 ◽  
Author(s):  
Stéfanos Leite Georgopoulos ◽  
Erix Alexander Milán-Garcés ◽  
Antonio Carlos Sant’Ana ◽  
Gustavo Fernandes Souza Andrade ◽  
Luiz Fernando Cappa de Oliveira
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Squaric Acid ◽  
Surface Enhanced ◽  
Surface Enhanced Raman
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