Rapid and ultra-sensitive determination of enzyme activities using surface-enhanced resonance Raman scattering

2004 ◽  
Vol 22 (9) ◽  
pp. 1133-1138 ◽  
Author(s):  
Barry D Moore ◽  
Lorna Stevenson ◽  
Alan Watt ◽  
Sabine Flitsch ◽  
Nicolas J Turner ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Enzyme Activities ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Surface Enhanced ◽  
Sensitive Determination

Sensitive Detection of Rhodamine B in Condiments Using Surface-Enhanced Resonance Raman Scattering (SERRS) Silver Nanowires as Substrate

2017 ◽  
Vol 71 (10) ◽  
pp. 2395-2403 ◽  
Author(s):  
Lixia Zhang ◽  
Peng Li ◽  
Lan Luo ◽  
Xiangfeng Bu ◽  
Xiaolei Wang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Rhodamine B ◽  
Silver Nanowires ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Assembly Method ◽  
Relative Standard ◽  
Vis Spectroscopy ◽  
Surface Enhanced

In this paper, a facile large-scale preparation of surface-enhanced resonance Raman scattering (SERRS) substrates for the determination of Rhodamine B (RhB) based on silver nanowires (Ag NWs) has been developed. The morphology, structure, and properties of as-prepared Ag NWs are characterized using ultraviolet–visible (UV-Vis) spectroscopy, field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD), respectively. Ag NWs were assembled onto glass slides through a self-assembly method. Moreover, in our experiment, as-prepared Ag NWs@glass were used as a SERRS substrate to detect RhB at the excitation wavelength of 532 nm. Experimental conditions such as pH value and soaking time on SERRS performance were studied and optimized. Under the optimized conditions, the SERRS intensity at 1648 cm−1 exhibited a linear relationship with the concentration of RhB in the range of 1.0 × 10−9–1.0 × 10−5 mol L−1 and detection limit (signal-to-noise ratio [S/N] = 3) is as low as 0.3 nmol L−1. The corresponding correlation coefficient of the linear equation was 0.996. This method based on Ag NWs@glass for the detection of RhB in three kinds of condiment was investigated. The limits of detection (LODs) for RhB were 0.35 µg/g in chili powder, 0.14 µg/g in chili sauce, and 0.02 µg/g in Chinese prickly ash. The relative standard deviations (RSD) were between 2.18% and 4.56% (n = 3) and recoveries at three levels were in the range of 80.0–98.7% for different spiked food products. Moreover, the results showed that the proposed method was sensitive, convenient, and feasible for the determination of RhB in condiments.

A New and Reproducible Surface-Enhanced Resonance Raman Scattering Method for the Determination of Trace Au(III) in Solution Using 4-Mercaptopyridine as Molecular Probe

2013 ◽  
Vol 664 ◽  
pp. 32-36
Author(s):  
Yan Yan Wei ◽  
Gui Qing Wen ◽  
Qing Ye Liu ◽  
Zhi Liang Jiang
Keyword(s):  
Detection Limit ◽  
Raman Scattering ◽  
Resonance Raman ◽  
Molecular Probe ◽  
Scattering Method ◽  
Resonance Raman Scattering ◽  
Buffer Solution ◽  
Surface Enhanced ◽  
Stable Reagent

In pH 6.5 Na2HPO4-NaH2PO4 buffer solution and in the presence of stable reagent PEG10000 and aggregation reagent NaCl, nanosilvers were aggregated to form stable aggregated-nanosilvers (ANS). The molecular probe of 4-mercaptopyridine (MP) adsorbed on the surface of ANS to form MP-ANS conjugates that produce strongest surface-enhanced resonance Raman scattering (SERRS) peak at 1097 cm-1. When Au(III) was added, the SERRS intensity at 1097 cm-1 decreased. The decreased SERRS intensity was linear to Au(III) concentration in the range of 5-50 ×10-10 mol/L, with a detection limit of 2.0×10-10 mol/L Au(III).

A density functional theory and resonance Raman study of a benzotriazole dye used in surface enhanced resonance Raman scattering

2006 ◽  
Vol 789 (1-3) ◽  
pp. 59-70 ◽  
Author(s):  
Prokopis C. Andrikopoulos ◽  
Karen M. McCarney ◽  
David R. Armstrong ◽  
Rachael E. Littleford ◽  
Duncan Graham ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Raman Scattering ◽  
Density Functional ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Functional Theory ◽  
Surface Enhanced ◽  
Raman Study

ChemInform Abstract: Synthesis of Novel Monoazo Benzotriazole Dyes (I) Specifically for Surface Enhanced Resonance Raman Scattering.

ChemInform ◽  
2010 ◽  
Vol 29 (40) ◽  
pp. no-no
Author(s):  
D. GRAHAM ◽  
C. MCLAUGHLIN ◽  
G. MCANALLY ◽  
J. C. JONES ◽  
P. C. WHITE ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Surface Enhanced
Sign in / Sign up

Export Citation Format

Share Document