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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Preparation of environmental samples for chemical speciation of metal/metalloids: A review of extraction techniques

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Martins Viana, Jose Lucas [1] ; Menegario, Amauri Antonio [2] ; Fostier, Anne Helene [1]
Total Authors: 3
[1] Univ Estadual Campinas, Inst Chem, UNICAMP, POB 6154, BR-13083970 Campinas, SP - Brazil
[2] Sao Paulo State Univ, Environm Studies Ctr CEA, UNESP, Ave 24-A, 1515, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 2
Document type: Review article
Source: Talanta; v. 226, MAY 2021.
Web of Science Citations: 0

Chemical speciation is a relevant topic in environmental chemistry since the (eco)toxicity, bio (geo)chemical cycles, and mobility of a given element depend on its chemical forms (oxidation state, organic ligands, etc.). Maintaining the chemical stability of the species and avoiding equilibrium disruptions during the sample treatment is one of the biggest challenges in chemical speciation, especially in environmental matrices where the level of concomitants/interferents is normally high. To achieve this task, strategies based on chemical properties of the species can be carried out and pre-concentration techniques are often needed due to the low concentration ranges of many species (mu g L-1 - ng L-1). Due to the significance of the topic and the lack of reviews dealing with sample preparation of metal (loid)s (usually, sample preparation reviews focus on the total metal content), this work is presented. This review gives an up-to-date overview of the most common sample preparation techniques for environmental samples (water, soil, and sediments), with a focus on speciation of metal/metalloids and determination by spectrometric techniques. Description of the methods is given, and the most recent applications (last 10 years) are presented. (AU)

FAPESP's process: 16/14227-5 - Climatic changes and environmental impacts in wetlands of Pantanal region (Brazil): quantification, control factors and long term temporal modeling
Grantee:Adolpho José Melfi
Support Opportunities: Research Program on Global Climate Change - Thematic Grants
FAPESP's process: 18/17069-7 - Evaluation of the biogeoavailability of metals and semimetals in soils using the diffusive gradient in thin film technique
Grantee:Amauri Antonio Menegário
Support Opportunities: Regular Research Grants
FAPESP's process: 19/18124-4 - Fluxes, speciation and bioavailability of arsenic at the water/sediment interface in alkaline lakes of the Pantanal of Nhecolândia using DGT
Grantee:José Lucas Martins Viana
Support Opportunities: Scholarships in Brazil - Doctorate