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Título:
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Robust ultrasound assisted extraction approach using dilute TMAH solutions for the speciation of mercury in fish and plant materials by cold vapour atomic absorption spectrometry (CVAAS)
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Autores:
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M.V. BALARAMA KRISHNA, Autor ;
D. KARUNASAGAR, Autor
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Tipo de documento:
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documento electrónico
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Fecha de publicación:
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2015
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ISBN/ISSN/DL:
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69199
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Dimensiones:
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pp. 1997-2005
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Nota general:
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En: Analytical Methods No 7 (2015)
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Langues:
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Inglés
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Clasificación:
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ESPECTROMETRÍA ATÓMICA
MERCURIO
PECES
PLANTAS
ULTRASONIDO
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Resumen:
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A simple and rapid ultrasound assisted extraction (UAE) protocol with dilute solutions of tetramethylammonium hydroxide (TMAH) for the speciation of mercury in fish and plant tissues was developed as an alternative to conventional methods which require intensive treatments. The main operational parameters, such as extractant concentration (TMAH), sonication time and amount of sample, were optimized using BCR ERM-CE 464 (tuna fish) and mercury loaded coriander powder, an in-house reference material, taken as representatives of fish and plant tissues, respectively. Quantitative extractions of the inorganic mercury (iHg) and methyl mercury (MeHg) species were obtained using 8 mL of 2% TMAH with a sonication time of 5 min for a sample weight of
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