Spectrophotometric monitoring of multiple water treatment performance indicators using chemometrics
First Claim
1. A method for simultaneously measuring the concentration of multiple performance indicators comprising components used in treating an aqueous system comprising directly determining an absorbance or emission spectrum of the aqueous system in a wavelength range of 200 to 2500 nm, and applying chemometrics algorithms to the absorbance or emission spectrum to simultaneously determine the concentrations of the performance indicators.
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Abstract
The present invention is directed to a novel method for analyzing aqueous systems to simultaneously quantify the concentrations of multiple active or inactive treating components which may be contained therein. The method comprises determining the absorbance or emission spectrum of the components in the aqueous system over the wavelength range of from 200 to 2500 nm, and then applying chemometrics algorithms to extract and analyze features in the spectrum that are specific to the qualitative and quantitative concentrations from the specific components to simultaneously determine the concentrations of the components.
127 Citations
18 Claims
- 1. A method for simultaneously measuring the concentration of multiple performance indicators comprising components used in treating an aqueous system comprising directly determining an absorbance or emission spectrum of the aqueous system in a wavelength range of 200 to 2500 nm, and applying chemometrics algorithms to the absorbance or emission spectrum to simultaneously determine the concentrations of the performance indicators.
- 7. A method for simultaneously measuring the concentration of multiple performance indicators comprising components used in treating an aqueous system comprising directly determining an absorbance or emission spectrum of the aqueous system which contains the performance indicators in a wavelength range of 200 to 2500 nm, and applying chemometrics algorithms to the absorbance or emission spectrum to simultaneously determine the concentrations of the respective performance indicators and wherein the chemometrics algorithm is based on principle component analysis of the absorbance or emission spectrum.
- 10. A method for simultaneously measuring the concentrations of multiple performance indicators comprising one or more treating components and at least one inert tracer in aqueous systems comprising directly determining an absorbance or emission spectrum of the aqueous system in a wavelength range of 200 to 2500 nm, and applying chemometrics algorithms to the absorbance or emission spectrum to determine the concentrations of the performance indicators and the at least one inert tracer.
- 16. A method for simultaneously measuring the concentrations of multiple performance indicators comprising one or more treating components and at least one inert tracer in an aqueous system comprising directly determining an absorbance or emission spectrum of the aqueous system in a wavelength range of from 200 to 2500 nm, and applying chemometrics algorithms to the absorbance or emission spectrum to determine the concentrations of the performance indicators and the at least one inert tracer and wherein the chemometrics algorithms is based on principle component analysis of the absorbance or emission spectrum.
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