Welcome to e-Prints Soton!
Go to the home pageGo to you accountBrowse the archiveSearch e-Prints Soton
The identification of phytoplankton pigments from absorption spectra

Aguirre-Gomez, R., Weeks, A.R. and Boxall, S.R. (2001) The identification of phytoplankton pigments from absorption spectra. International Journal of Remote Sensing, 22, (2-3), 315-338. (doi: 10.1080/014311601449952)
http://eprints.soton.ac.uk/7883/

Full text of this item is not available from this server.

Official URL: http://journalsonline.tandf.co...1601449952

Abstract

The absorption spectra of photosynthetic algae are characterized by a continuous envelope, which is a result of the overlapping spectra of the indivual pigments. This feature makes it difficult to estimate the contribution of each pigment to the total absorption spectra. Derivative analysis is an objective tool for isolating absorption peaks in phytoplankton. Theoretically, electrons and ions of interacting molecules can be regarded as simple harmonic oscillators in an electromagnetic field, which result in a Lorentzian shape. However, when measured by an optical spectrophotometer the signal is transformed into a Gaussian curve. Thus, a combination of both types of curve provides a realistic approach to the decomposition of absorption spectra. In this study derivative analysis is performed on absorption spectra in order to prove that the method can be successfully used to identify the individual absorption spectra of component pigments. The spectra used are modelled phytoplankton, spectrophotometric measurements of algal cultures and samples from natural waters. A combination of Gaussian-Lorentzian shaped curves, centred on the identified peaks, were compared with the original spectra and showed good agreement.

Item Type:Article
ID Code:7883
Date of issue:2001
ISSN:0143-1161
Uncontrolled Keywords:PHYTOPLANKTON, PIGMENTS, ABSORPTION SPECTRA
Subjects:Q Science > QH Natural history > QH301 Biology
G Geography. Anthropology. Recreation > GC Oceanography
School or Centre:School of Ocean & Earth Science (SOC/SOES)
National Oceanography Centre (NERC)
Deposited By:Bulk Upload Script, A
Deposited On:19 July 2004

Edit this item (Staff only)

©2003-2006 University of Southampton
Related Sites: University of Southampton, Library, TARDis Project, GNU EPrints Software.