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Ultraviolet absorption of contaminants in water.


ABSTRACT: Contaminants in water were studied using ultraviolet absorption with light emitting diode and deuterium lamp sources, and a thresholding detector. The absorption spectra of potassium hydrogen pthalate, clothianidin, tryptophan, thiamethoxam, uric acid and metaldehyde were obtained in the range 200-360 nm. Only metaldehyde was not suitable for detection in this range. For the other contaminants, and mixtures of pairs of compounds, the transmitted signal could be approximately described with a simple spectral model of the source-absorption-detector system. Combined measurements at two wavelengths could allow relative concentrations in certain mixtures to be determined, and real-time absorption measurements were demonstrated in a flume.

SUBMITTER: Spangenberg M 

PROVIDER: S-EPMC7878760 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Ultraviolet absorption of contaminants in water.

Spangenberg Martin M   Bryant James I JI   Gibson Sam J SJ   Mousley Philip J PJ   Ramachers Yorck Y   Bell Gavin R GR  

Scientific reports 20210211 1


Contaminants in water were studied using ultraviolet absorption with light emitting diode and deuterium lamp sources, and a thresholding detector. The absorption spectra of potassium hydrogen pthalate, clothianidin, tryptophan, thiamethoxam, uric acid and metaldehyde were obtained in the range 200-360 nm. Only metaldehyde was not suitable for detection in this range. For the other contaminants, and mixtures of pairs of compounds, the transmitted signal could be approximately described with a sim  ...[more]

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