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On-Line Monitoring of Water Quality and Plant Nutrients in Space Applications Based on Photodiode Array Spectrometry
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English
Abstract
Significant needs exist for on-line real-time monitoring of water quality and hydroponic plant nutrients in regenerative life support systems. Toxic metals and organic pollutants in recirculated water are more effectively controlled by on-line monitoring. Biomass production of various crops may be enhanced by optimal control of plant nutrients. A new on-line fiber optic spectrometer is in development that uses a combination of ultraviolet-visible absorption measurements in combination with liquid atomic emission spectra to assay a wide variety of chemical compounds and ions in solution. Problems created by interfering, overlapping spectra are solved through the use of pattern recognition methods for multicomponent chemical analysis. This analytical instrument has been successfully applied to the analysis of 15-component plant nutrient solutions.
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Citation
Schlager, K., "On-Line Monitoring of Water Quality and Plant Nutrients in Space Applications Based on Photodiode Array Spectrometry," SAE Technical Paper 911361, 1991, https://doi.org/10.4271/911361.Also In
References
- Guilbault, George G. Practical Fluorescence Marcel Dekker 1973
- Jones, T.P. Porter, M.D. “Optical pH Sensor Based on the Chemical Modification of a Porous Polymer Film” Analytical Chemistry 60 404 406 1988
- Land, D.B. Edmonds, S. “A Fluorometric Method for Determining Trace Quantities of Phosphate” Mikrochim Acta 1013 1966
- Metcalfe Atomic Absorption and Emission Spectroscopy Wiley 1987
- Otto, M. Wegscheider, W. “Spectrophotometric Multicomponent Analysis Applied to Trace Metal Determinations” Analytical Chemistry 57 63 69 1985
- Schrenk, W.G. Analytical Atomic Spectroscopy Plenum Press 1975
- Sibbald, A. et. al. “Simultaneous On-Line Measurement of Blood K + , Ca 2+ , Na + and pH with a Four-Function ChemFET Integrated-Circuit Sensor” Clinical Chemistry 30 1 135 1984
- Zhujun, Z. Seitz, W.R. “A Fluorescence Sensor for Quantifying pH in the Range of 6.5 to 8.5” Analytical Chimica Acta 160 47 55 1984