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Título del libro: Arsenic In Drinking Water And Food
Título del capítulo: Arsenic in Latin America: Part I

Autores UNAM:
MARIA AURORA ARMIENTA HERNANDEZ;

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Autores externos:

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Idioma:

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Año de publicación:
2019

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Palabras clave:

Argentina; Arsenic; Brazil; Chile; HG-AAS; XRF spectrometry

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Resumen:

complete analysis on the occurrence of arsenic (As) in aquifers and several superficial water bodies in Latin America, identified in 13 countries, is presented. The Chaco-Pampean plain in Argentina is the largest area affected by groundwater As contamination. Research on the chemical and hydrogeological processes of release and mobilization of As has also been developed in Mexico, Chile, Bolivia, Peru, and Nicaragua. In most of the contaminated areas, As originates from geogenic sources, mainly volcanic rocks, hydrothermal fluids, and As-bearing minerals. However, anthropogenic sources are also present in certain zones, most of them coming from mining operations and, in some cases, related to agriculture. Mining is indeed the main As source in Brazil. The physicochemical characteristics of the water, such as pH and Eh, and the presence of other ions influence the mobilization of As. Hydrogeological conditions also determine the occurrence of As contamination. It has been found that the element is in the As(V) form in most locations. In all Latin American countries, more research has still to be conducted to determine As concentrations and speciation in water bodies used as drinking water source, to unravel its origin and mobilization processes. Regarding analytical methods on As determination, 167 papers in scientific journals have been identified in the last 18 years in Latin America. The most widely analytical methodologies used for As determination are AAS (57%), specifically HG-AAS, and ICP (26%), mainly coupled with MS. Electrochemical methods have been applied in Chile, Brazil, and Argentina. UV-VIS spectrometry has been used mainly in Cuba and Mexico. XRF spectrometry, principally for solid samples, has been used in Mexico, Cuba, Brazil, Argentina, and Chile. Other used methodologies are INAA, the ARSOlux Biosensor and the SPRN technique. © Springer Nature Singapore Pte Ltd. 2020.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9789811385872
Editorial:
Springer Singapore Nombre de la publicación:
Arsenic in Latin America: Part I
Página inicial:
72
Página final:
112

Tipo de producto:
Capítulo de un Libro

DOI:
10.1007/978-981-13-8587-2_4