Two-wavelength, multipurpose, truly portable chlorophyll fluorometer and its application in field monitoring of phytoremediation
Authors: Barcsi A.1; Kocsnyi L.1; Vrkonyi S.1; Richter P.1; Csintalan Z.2; Szente K.2
Source: Measurement Science and Technology, Volume 11, Number 6, 2000 , pp. 717-729(13)
Publisher: Institute of Physics Publishing
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Abstract:
In this paper a compact, portable instrument is presented for the measurement of full chlorophyll fluorescence kinetics of plants at two different wavelengths. The instrument uses a 635 nm laser diode as a light source with variable gain driving that allows excitations at selectable actinic levels. The plant fluorescence is detected, at 690 nm and 735 nm, through a specially mixed three-branch optical fibre bundle. Large scale field monitoring of vegetation is made possible by the utilization of PC/104-form embedded electronics including a low power, IBM PC/386-compatible single board computer (SBC) with non-volatile flash memory. Application of a general purpose SBC and task oriented programming offers in situ data evaluation making process control possible. The capabilities of the instrument were demonstrated in monitoring soil phytoremediation processes.
Language: English
Document Type: Miscellaneous
Affiliations: 1: Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki ?t 8, H-1111 Budapest, Hungary 2: Ecophysiological Research Group of the Department of Botany and Plant Physiology, Szent Istv?n University of G?d?ll?, P?ter K?roly ?t 1, H-2103 G?d?ll?, Hungary
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