Fluorometric sensing of ultralow As(III) concentrations using Ag doped hollow CdS/ZnS bi-layer nanoparticles.
Dalton Trans
; 44(47): 20464-74, 2015 Dec 21.
Article
en En
| MEDLINE
| ID: mdl-26541652
Arsenic poisoning from drinking water has been an important global issue in recent years. Because of the high level toxicity of arsenic to human health, an easy, inexpensive, low level and highly selective detection technique is of great importance to take any early precautions. This study reports the synthesis of Ag doped hollow CdS/ZnS bi-layer (Ag-h-CdS/ZnS) nanoparticles for the easy fluorometric determination of As(iii) ions in the aqueous phase. The hollow bi-layer structures were synthesized by a sacrificial core method using AgBr as the sacrificial core and the core was removed by dissolution in an ammonium hydroxide solution. The synthesized nanoparticles were characterized using different instrumental techniques. A good linear relationship was obtained between fluorescence quenching intensity and As(iii) concentration in the range of 0.75-22.5 µg L(-1) at neutral pH with a limit of detection as low as 0.226 µg L(-1).
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Arsénico
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Plata
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Sulfuros
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Contaminantes Químicos del Agua
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Compuestos de Zinc
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Compuestos de Cadmio
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Nanopartículas del Metal
Idioma:
En
Revista:
Dalton Trans
Asunto de la revista:
QUIMICA
Año:
2015
Tipo del documento:
Article
Pais de publicación:
Reino Unido