A new resonance Rayleigh scattering spectral method for determination of O3 with victoria blue B

2014 ◽  
Vol 117 ◽  
pp. 170-174 ◽  
Author(s):  
Guiqing Wen ◽  
Duo Yang ◽  
Zhiliang Jiang
Keyword(s):  
Spectral Method ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering

Resonance Rayleigh Scattering Spectral Determination of As(V) Using Cu(II) as Catalyst

2013 ◽  
Vol 788 ◽  
pp. 23-26
Author(s):  
Gui Qing Wen ◽  
Ai Hui Liang
Keyword(s):  
Waste Water ◽  
Detection Limit ◽  
Spectral Method ◽  
Correlation Coefficient ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Spectral Determination ◽  
Strong Resonance ◽  
Hcl Medium

In HCl medium and in the presence of CuSO4, Na3AsO4 can be reduced by NaH2PO2 to form As nanoparticles (AsNs) which exhibited a strong resonance Rayleigh scattering (RRS) peak at 370 nm. Under the chosen conditions, the increased intensity at 370 nm was linear to As5+ concentration in the range of 0.48-38.0×10-6 mol/L, with a regression equation of ΔI370nm = 82.3 CAs + 33.9, a correlation coefficient of 0.9878 and a detection limit of 2.0×10-7 mol/L As5+. The proposed method was applied to detect As5+ concentration in waste water, with simplicity, rapidity and accuracy. Thus, a novel RRS spectral method was established to determine As5+.

scholarly journals A Simple and Selective Nanocatalytic Resonance Rayleigh Scattering Spectral Method for the Determination of Trace Re

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Shengmian Wang ◽  
Guiqing Wen ◽  
Tingsheng Li ◽  
Xianjiu Liao ◽  
Aihui Liang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Spectral Method ◽  
Rayleigh Scattering ◽  
Catalytic Effect ◽  
Resonance Rayleigh Scattering ◽  
Strong Resonance ◽  
Hcl Medium

In the HCl medium, rhenium (VII) or Re nanoparticles exhibited strong catalytic effect on the slow Te particle reaction between Te(VI) and Sn(II) at 70°C. The product of formed Te particles shows two strong resonance Rayleigh scattering peaks at 778 nm and 540 nm. The RS intensity at 778 nm enhanced linearly with Re concentration. The enhanced RS intensity was linear Re concentration in the range of 0.01–2.0 nmol·L−1, with a detection limit of 0.005 nmol·L−1Re. This method was applied to the analysis of Re in ore sample, and the results were in agreement with that of the spectrophotometry.

Resonance Rayleigh Scattering Spectral Determination of Vitamin C by Nanogold Catalysis

2012 ◽  
Vol 260-261 ◽  
pp. 815-819
Author(s):  
Gui Qing Wen ◽  
Zhi Liang Jiang
Keyword(s):  
Detection Limit ◽  
Vitamin C ◽  
Spectral Method ◽  
Correlation Coefficient ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Spectral Determination ◽  
Beverage Samples ◽  
Nanogold Catalysis

The nanogold catalysis effect on the reaction between HAuCl4 and Vitamin C (VC) was studied by resonance Rayleigh scattering (RS) spectroscopy at 540 nm, and a simple, rapid RS spectral method was established to determine VC. Under the chosen conditions, the increased intensity at 540 nm was linear to the VC concentration in the range of 7×10-6-2.8×10-4mol/L, with a regression equation of ΔI540 = 2.98 CVC + 13.4, a correlation coefficient of 0.9909 and a detection limit of 2×10-6 mol/L VC. The proposed method was applied to detect VC content in VC tablets and beverage samples, with simplicity, rapidity and accuracy.

A New Catalytic Kinetic Method for the Determination of Trace Amounts Vanadium with Resonance Rayleigh Scattering Detection

2013 ◽  
Vol 716 ◽  
pp. 66-69
Author(s):  
Xin Hui Zhang ◽  
Le Ning Hu ◽  
Ai Hui Liang
Keyword(s):  
Spectral Method ◽  
Rayleigh Scattering ◽  
Kinetic Method ◽  
Influence Factors ◽  
Resonance Scattering ◽  
Resonance Rayleigh Scattering ◽  
Scattering Intensity ◽  
Real Samples ◽  
Fluorescence Peak

A new catalytic kinetic method for the determination of vanadium (V) was proposed, based on the V (V) catalyze the slow reaction between KClO3and phenylgycollic acid (PA) in 0.6 mol/L H2SO4solution at 100 °C. The reduction product of ClO3-, Cl-, reacts with Ag+to form (AgCl)nnanoparticles. The nanoparticles exhibit a max resonance scattering spectral peak at 470 nm and a strongest fluorescence peak at 470 nm. The resonance scattering intensity at 470 nm is linear to the V concentration in the range of 2.0×10-9mol/L to 4.0×10-8mol/L. The influence factors on the catalytic resonance scattering determination of trace vanadium were examined. This catalytic resonance scattering spectral method has been applied to the analysis of vanadium in real samples, with satisfactory results.

Resonance Rayleigh scattering spectral method for the determination of raloxifene using gold nanoparticle as a probe

2007 ◽  
Vol 598 (2) ◽  
pp. 304-311 ◽  
Author(s):  
Shao Pu Liu ◽  
You Qiu He ◽  
Zhong Fang Liu ◽  
Ling Kong ◽  
Qun Min Lu
Keyword(s):  
Gold Nanoparticle ◽  
Spectral Method ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering
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