Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Fluorescence lifetime evaluation of whole soils from the Amazon rainforest

Not Accessible

Your library or personal account may give you access

Abstract

Time-resolved fluorescence spectroscopy (TRFS) is a new tool that can be used to investigate processes of interaction between metal ions and organic matter (OM) in soils, providing a specific analysis of the structure and dynamics of macromolecules. To the best of our knowledge, there are no studies in the literature reporting the use of this technique applied to whole/non-fractionated soil samples, making it a potential method for use in future studies. This work describes the use of TRFS to evaluate the fluorescence lifetimes of OM of whole soils from the Amazon region. Analysis was made of pellets of soils from an oxisol–spodosol system, collected in São Gabriel da Cachoeira (Amazonas, Brazil). The fluorescence lifetimes in the oxisol–spodosol system were attributed to two different fluorophores. One was related to complexation of an OM fraction with metals, resulting in a shorter fluorophore lifetime. A short fluorescence lifetime (2–12 ns) could be associated with simpler structures of the OM, while a long lifetime (19–66 ns) was associated with more complex OM structures. This new TRFS technique for analysis of the fluorescence lifetime in whole soil samples complies with the principles of green chemistry.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Quantification of total carbon in soil using laser-induced breakdown spectroscopy: a method to correct interference lines

Gustavo Nicolodelli, Bruno S. Marangoni, Jader S. Cabral, Paulino R. Villas-Boas, Giorgio S. Senesi, Cléber Hilario dos Santos, Renan A. Romano, Aline Segnini, Yves Lucas, Célia R. Montes, and Débora M. B. P. Milori
Appl. Opt. 53(10) 2170-2176 (2014)

Whole-field optically sectioned fluorescence lifetime imaging

M. J. Cole, J. Siegel, S. E. D. Webb, R. Jones, K. Dowling, P. M. W. French, M. J. Lever, L. O. D. Sucharov, M. A. A. Neil, R. Juškaitis, and T. Wilson
Opt. Lett. 25(18) 1361-1363 (2000)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved