In-situ formation of ion-association nanoparticles induced enhancements of resonance Rayleigh scattering intensities for quantitative analysis of trace Hg 2+ ions in environmental samples

2016 ◽  
Vol 167 ◽  
pp. 19-25 ◽  
Author(s):  
Qingling Yang ◽  
Jian Liu ◽  
Banglin Li ◽  
Xiaoli Hu ◽  
Shaopu Liu ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Environmental Samples ◽  
Rayleigh Scattering ◽  
Ion Association ◽  
Resonance Rayleigh Scattering ◽  
In Situ Formation

Resonance Rayleigh Scattering for the Determination of Chlorpromazine and Promethazine

2006 ◽  
Vol 59 (12) ◽  
pp. 915 ◽  
Author(s):  
Lanxiang An ◽  
Shaopu Liu ◽  
Zhongfang Liu ◽  
Ling Kong ◽  
Xiaoli Hu
Keyword(s):  
Reaction Mechanism ◽  
Drug Concentration ◽  
Rayleigh Scattering ◽  
Ion Association ◽  
Resonance Rayleigh Scattering ◽  
Optimum Conditions ◽  
Serum Samples ◽  
Spectroscopic Characteristics ◽  
Urine And Serum

Chlorpromazine (CPZ) and promethazine (PZ) can react with potassium ferrioxalate (PF) to form 3:1 ion-association complexes, which can result in a significant enhancement of resonance Rayleigh scattering (RRS) intensity. The maximum scattering peaks are located at 368 nm for CPZ-PF and 370 nm for PZ-PF. The RRS spectroscopic characteristics, the optimum conditions of reactions, and influencing factors have been studied for CPZ-PF and PZ-PF. There is a linear relationship between the RRS intensity and the drug concentration in the range of 0.02–8.00 μg mL–1 for CPZ and 0.04–9.00 μg mL–1 for PZ, and the detection limits (3σ) are 6.6 ng mL–1 for CPZ and 10.6 ng mL–1 for PZ. The proposed method has been applied to determine CPZ in urine and serum samples with satisfactory results. Moreover, the reaction mechanism and the reasons for intensity enhancement of RRS have been discussed.

Gold nanorods enhanced resonance Rayleigh scattering for detection of Hg2+ by in-situ mixing with single-stranded DNA

2018 ◽  
Vol 255 ◽  
pp. 836-842 ◽  
Author(s):  
Sawinee Ngernpimai ◽  
Piyaporn Matulakun ◽  
Saowapak Teerasong ◽  
Theerapong Puangmali ◽  
Atcha Kopwitthaya ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Single Stranded Dna

scholarly journals Investigating the interaction of terbinafine with xanthenes dye for its feasible determination applying the resonance Rayleigh scattering technique

2021 ◽  
Vol 8 (1) ◽  
pp. 201545
Author(s):  
Mohamed A. Abdel-Lateef ◽  
Sayed M. Derayea ◽  
Deena A. M. Nour El-Deen ◽  
Albandary Almahri ◽  
Mohamed Oraby
Keyword(s):  
Rayleigh Scattering ◽  
Ion Association ◽  
Pharmaceutical Formulations ◽  
Resonance Rayleigh Scattering ◽  
Complexation Reaction ◽  
Hydrophobic Force ◽  
Terbinafine Hydrochloride ◽  
Erythrosine B ◽  
Quantitation Limit

Terbinafine hydrochloride is a potent antifungal drug indicated for oral and topical treatment of mycoses. A resonance Rayleigh scattering (RRS) method was developed for the determination of terbinafine hydrochloride through a feasible complexation reaction with erythrosine B. In a weakly acidic medium (acetate buffer, pH 5.0), terbinafine hydrochloride can react with erythrosine B through the electrostatic attraction and virtue of hydrophobic force to form an ion-association complex. The reaction resulted in the appearance of a new RRS peak at 369 nm. The RRS peak was increased by increasing the concentration of terbinafine hydrochloride in the linear range of 0.1–1.5 µg ml −1 . All the reaction conditions (erythrosine B concentration, buffer volume, diluting solvent and pH) were optimized. The detection limit was 0.029 µg ml −1 while the quantitation limit was 0.089 µg ml −1 . The suggested method after its validation was successfully applied for the determination of terbinafine hydrochloride in different pharmaceutical formulations (tablets and cream) with sufficient recovery.

scholarly journals A dual-mode resonance Rayleigh scattering and colorimetric alkaline phosphatase assay based on in situ ascorbic acid-induced signal generation from manganese dioxide nanosheets

RSC Advances ◽  
2020 ◽  
Vol 10 (52) ◽  
pp. 31527-31534
Author(s):  
Shiyu Liu ◽  
Xiaoxiao Song ◽  
Jinping Li ◽  
Jiahong Zhou ◽  
Weidan Na ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Rayleigh Scattering ◽  
Signal Generation ◽  
Resonance Rayleigh Scattering ◽  
Dual Mode ◽  
Alkaline Phosphatase Assay ◽  
Improving Accuracy ◽  
Induced Signal ◽  
Phosphatase Assay

Multimode sensing has attracted extensive attention because they provide more than one transduction channel, thus improving accuracy and sensitivity.

The Resonance Rayleigh Scattering Spectrum Characteristic of Tb3+-GMFX-AR and the Determination of Gemifloxacin

2014 ◽  
Vol 881-883 ◽  
pp. 65-69
Author(s):  
Hui Ping Xi ◽  
Xiu Wei Fang
Keyword(s):  
Detection Limit ◽  
Hydrophobic Interaction ◽  
Rayleigh Scattering ◽  
Ion Association ◽  
Resonance Rayleigh Scattering ◽  
Buffer Solution ◽  
Alizarin Red ◽  
Scattering Spectrum ◽  
Spectrum Characteristic

A new method for the determination of Gemifloxacin (GMFX) by using Resonance Rayleigh scattering was put forward. In HAc-NaAc buffer solution of pH 5 - 6, terbium (III) and antibiotics GMFX could form cationic complexes, which coulf further form 1 :2 : 1 (Tb3+ : GMFX :AR) ternary ion association complexes by the reaction with Alizarin Red (AR) anion through electrostatic and hydrophobic interaction. The new Resonance Rayleigh scattering (RRS) spectra would appear, and the two scattering peaks were located at 370nm and 590 nm. At 370 nm, the scattering enhancement (ΔI) was proportional to GMFX of certain concentration and its linear range and detection limit (3σ) were 0.005 ~ 4.00 μg.mL-1and 14.5 ng.mL-1. This method is simple, fast, with good selectivity and reproducibility, and it can be used for determination of GMFX drug in various body fluids.

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