Comparison of different sample treatments for the determination of As, Cd, Cu, Ni, Pb and Zn in globe artichoke (Cynara cardunculus L. subsp. Cardunculus)

Dublin Core

Título

Comparison of different sample treatments for the determination of As, Cd, Cu, Ni, Pb and Zn in globe artichoke (Cynara cardunculus L. subsp. Cardunculus)

Tema

ANALISIS QUIMICO
ABSORCION ATOMICA
ESPECTROMETRIA
MINERALES
ALCACHOFA
BIBLIOGRAFIA NACIONAL QUIMICA
2016

Abstract

New and environmentally friendly procedures for the determination of nutritious and harmful elements in highly consumed foodstuffs such as vegetables are needed. Three accurate and efficient methods for the extraction of As, Cd, Cu, Ni, Pb and Zn in globe artichoke were optimized and validated. The sample preparation methodologies developed consisted of extraction with diluted acid assisted by either an ultrasonic probe or an ultrasonic bath, and an ozone-based treatment of the acid solution. The elements were determined by flame atomic absorption spectrometry, electrothermal atomic absorption spectrometry and hydride generation atomic absorption spectrometry. Experimental conditions were optimized by means of multivariate experiments. A comparative study using Student's t-test to establish whether there was a difference between using ultrasound (probe and bath) or ozone was performed. The results showed that the three methods were adequate for the extraction of As, Cd, Cu, Ni, Pb and Zn in globe artichoke. Trueness was verified by analysis (n = 6) of a certified reference material and by performing a total digestion with a microwave-assisted procedure. At the 95% significance level, results were statistically equivalent to the certified values and to those obtained by total digestion for all the elements. Analytical precision expressed as relative standard deviation (RSD (%), n = 6) was less than 10% in all cases. Samples of globe artichoke from a Uruguayan family farmer were analyzed. Results showed that globe artichoke fruits and leaves are a promising source of Cu and Ni and particularly they are a good source of Zn.

Autor

Machado, Ignacio
Rodríguez Arce, Esteban

Fuente

Microchemical Journal v. 128, 2016. -- p. 128-133

Editor

Elsevier

Fecha

2016

Derechos

Información sobre Derechos de Autor

(Por favor lea este aviso antes de abrir los documentos u objetos)

La legislación uruguaya protege el derecho de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)

ADVERTENCIA - La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.

Formato

PDF

Idioma

Inglés

Tipo

Articulo

Identificador

DOI:10.1016/j.microc.2016.04.016

Document Item Type Metadata

Original Format

PDF
Fecha de agregación
August 12, 2016
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
Etiquetas
, ,
Citación
Machado, Ignacio, “Comparison of different sample treatments for the determination of As, Cd, Cu, Ni, Pb and Zn in globe artichoke (Cynara cardunculus L. subsp. Cardunculus),” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed December 8, 2019, http://riquim.fq.edu.uy/items/show/4223.
Archivos