A retrospective and prospective of the use of bio- and nanomaterials for preconcentration, speciation, and determination
- PDF / 843,056 Bytes
- 14 Pages / 595.276 x 790.866 pts Page_size
- 58 Downloads / 168 Views
REVIEW
A retrospective and prospective of the use of bio- and nanomaterials for preconcentration, speciation, and determination of trace elements: a review spanning 25 years of research Patricia Smichowski 1,2 & Agustín Londonio 1,3 Received: 2 December 2019 / Revised: 17 February 2020 / Accepted: 19 February 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract This review covers the investigations carried out with my colleagues and students during the last 25 years aimed at the development of analytical procedures for the preconcentration and/or speciation analysis of trace and ultra-trace elements using bio- and nanosorbents employing different methodologies, analytical techniques, and instrumental approaches. In the last years, an important part of this research was based on the use of nanomaterials for preconcentration and/or speciation studies. For their properties, they constitute a break point in the evolution of analytical chemistry. Special attention was paid to carbon nanotubes (CNTs) that resulted effective sorbents in flow systems using different immobilization strategies to improve their sorption capabilities. They resulted unique tools for on-line solid-phase (micro)extraction methods providing the appropriate selectivity (clean-up) and sensitivity (preconcentration) to reach the expected levels of many elements in matrices of biological or environmental interest. The performance of the different substrates, their strengths and weaknesses for the determination of trace elements, and their species in different matrices by a variety of analytical techniques are discussed in detail, along with perspectives and possible challenges in future development. This survey contains 96 references and covers primarily the literature published over the last 25 years by our research group. Relevant publications on the topics discussed were also included. Keywords Bio- and nanomaterials . Preconcentration . Speciation . Off-line and on-line systems . Trace and ultra-trace elements
Abbreviations AAS ala-CNTs CNTs CPG CV CVG
ETAAS Atomic absorption spectrometry L-Alanine carbon nanotubes Carbon nanotubes Controlled pore glass Cold vapor Chemical vapor generation
FI FIA GFAAS HG ICP-MS
Published in the topical collection featuring Female Role Models in Analytical Chemistry.
ICP OES
* Patricia Smichowski [email protected]; [email protected]
LLE LOD MeHg MW NPC NPs ox-CNTs PF pro-MWCNTs SEM
1
Comisión Nacional de Energía Atómica, Gerencia Química, Av. Gral Paz 1499, B1650KNA San Martín, Buenos Aires, Argentina
2
Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Godoy Cruz 2290, C1425FQB Buenos Aires, Argentina
3
Instituto de Investigación e Ingeniería Ambiental (3iA), Universidad de San Martín, Martín de Irigoyen 3100, 1650 San Martín, Buenos Aires, Argentina
Electrothermal atomic absorption spectrometry Flow injection Flow injection analysis Graphite furnace atomic absorption spectrometry Hydride generation Inductively coupled plasma-mass spectrometry Indu
Data Loading...
