Pulsed flows in flow analysis: Potentialities, limitations and applications

Author(s)

Gonzalez, Pablo ^[1] ; Knochen, Moises ^[1] ; Sasaki, Milton K. ^[2] ; Zagatto, Elias A. G. ^[2]

Affiliation

^[1] Univ Republica, Fac Chem, Montevideo - Uruguay

^[2] Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba, SP - Brazil

• Document type: Review article
• Source: Talanta; v. 143, p. 419-430, OCT 1 2015.
• Web of Science Citations: 23

Abstract

In flow analysis, use of a steady and pulseless flow was considered essential for ensuring a reproducible handling of the flowing sample. To this end, peristaltic and syringe pumps have been the propelling device in the vast majority of the flow analysers. Recently, the number of applications involving pulsed flow has been increasing. Most of them refer to use of solenoid pumps, the essence of the so-called multi-pumping flow systems. This review critically discusses the characteristics, potentialities and limitations of the pulsed flow systems, emphasizing the main advantageous characteristics of the streams involved, such as high radial mass transference and good Mixing of the fluids. Diverse contributions ranging from instrumentation development to analytical applications are presented. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 11/14413-0 - Comparison of flow analyzers with laminar or pulsed flows and immobilized reagents: application to samples of pharmaceutical, agronomical and/or environmental relevance
• Grantee: Milton Katsumi Sasaki
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 11/23498-9 - Advanced flow systems for technological, agronomical and environmental analysis
• Grantee: Elias Ayres Guidetti Zagatto
• Support Opportunities: Research Projects - Thematic Grants