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Permanganate-bromide-silver nanoparticles as a new chemiluminescence system and its application to captopril determination
被引:15
作者:
Amjadi, Mohammad
[1
]
Manzoori, Jamshid L.
[1
]
Hassanzadeh, Javad
[1
]
Sorouraddin, Mohammad H.
[1
]
机构:
[1] Univ Tabriz, Fac Chem, Dept Analyt Chem, Tabriz 5166616471, Iran
来源:
关键词:
Chemiluminescence;
Silver nanoparticles;
Catalyst;
Permanganate;
Captopril;
FLOW-INJECTION CHEMILUMINESCENCE;
CATALYZED LUMINOL CHEMILUMINESCENCE;
PERFORMANCE LIQUID-CHROMATOGRAPHY;
ACIDIC POTASSIUM-PERMANGANATE;
TRIANGULAR GOLD NANOPARTICLES;
BIOLOGICAL-FLUIDS;
ENHANCED CHEMILUMINESCENCE;
AUTOMATED-DETERMINATION;
SENSITIVE DETERMINATION;
URINE;
D O I:
10.1016/j.talanta.2013.06.016
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
A novel chemiluminescence (CL) system based on the oxidation of bromide by permanganate in sulfuric acid medium is introduced. The enhancing effect of silver nanoparticles (NPs), synthesized by chemical reduction method, on this reaction was studied. It was demonstrated that spherical silver nanoparticles with average size of 18 nm had a most remarkable catalytic effect on this reaction. CL emission wavelengths and UV-vis spectra were used to characterize the system and propose a possible mechanism. Furthermore, it was found that captopril inhibits the action of NPs and decreases the intensity of CL Based on this phenomenon, a new CL method was developed for the determination of captopril in the 3.0 x 10(-10) to 1.0 x 10(-7) mol L-1 concentration range with a detection limit (3 s) of 0.12 nmol L-1. The method was successfully applied to the determination of captopril in pharmaceutical formulations, human urine and serum samples. (C) 2013 Elsevier B.V. All rights reserved.
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页码:600 / 605
页数:6
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