A nanosilver-based spectrophotometric method for sensitive determination of methyl violet in river water

Autor:	Mehrnaz Ghoochian, Abbas Farmany, Mahmoud Roushani, S. S. Mortazavi, Soheil Sobhanardakani, R. Sahraei
Rok vydání:	2013
Předmět:	Detection limit Chromatography medicine.diagnostic_test Health Toxicology and Mutagenesis Methyl violet Pollution River water Redox Silver nanoparticle Absorbance chemistry.chemical_compound chemistry Spectrophotometry medicine Environmental Chemistry Potassium bromate
Zdroj:	Toxicological & Environmental Chemistry. 95:214-220
ISSN:	1029-0486 0277-2248
DOI:	10.1080/02772248.2013.766192
Popis:	A method is reported for the determination of methyl violet in the range of 10–120 nmol L−1. The method is based on the catalytic effect of silver nanoparticles (AgNPs) on the oxidation reaction of methyl violet by potassium bromate in acid medium. The reaction is followed spectrophotometrically by measuring the change in absorbance () at 620 nm using a fixed time method. The reaction variables were optimized in order to achieve highest sensitivity. The 3б criterion detection limit was 5 nmol L−1, and the relative standard deviation for ten replicate determinations at a concentration of methyl violet of 15 nmol L−1 was 0.97% (n = 10). The method was successfully applied to the determination of methyl violet in river water samples.
Databáze:	OpenAIRE
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