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Optical properties of riverine dissolved organic matter and influence of precipitation – a case study

I. S. DONTU1, C. L. POPA1,* , D. SAVASTRU1, E. M. CARSTEA1

Affiliation

  1. National Institute of Research and Development for Optoelectronics - INOE 2000, 077125, str. Atomiștilor nr 409, Măgurele, Romania

Abstract

The study aimed to determine the optical characteristics of dissolved organic matter (DOM) from two rivers with different pollution sources, using fluorescence spectroscopy and spectrophotometry, two highly sensitive and selective optoelectronic methods. Results showed that the release of wastewater effluent in Ciorogarla River changed the optical properties of riverine DOM and its relationship with standard parameters. It was also found that Sabar River samples presented high DOM concentrations and an accumulation of autochthonous matter towards mid-autumn. Although the study was performed on specific rivers, the knowledge that was obtained could be used as reference for other aquatic systems.

Keywords

Rivers, Fluorescence spectroscopy, Dissolved organic matter, Surface runoff.

Citation

I. S. DONTU, C. L. POPA, D. SAVASTRU, E. M. CARSTEA, Optical properties of riverine dissolved organic matter and influence of precipitation – a case study, Optoelectronics and Advanced Materials - Rapid Communications, 18, 3-4, March-April 2024, pp.169-177 (2024).

Submitted at: Feb. 28, 2024

Accepted at: April 8, 2024