Assessing glyphosate and AMPA pesticides in the Ofanto River waters and sediments

Claudia Campanale; Mariangela Triozzi; Daniela Losacco; Annamaria Ragonese; Carmine Massarelli

doi:10.1016/j.marpolbul.2024.116376

Assessing glyphosate and AMPA pesticides in the Ofanto River waters and sediments

Mar Pollut Bull. 2024 Apr 16:202:116376. doi: 10.1016/j.marpolbul.2024.116376. Online ahead of print.

Authors

Claudia Campanale¹, Mariangela Triozzi², Daniela Losacco², Annamaria Ragonese², Carmine Massarelli²

Affiliations

¹ Department of Environment and Health, Istituto Supeiore di Sanità, Rome, Italy. Electronic address: claudia.campanale@iss.it.
² Consiglio Nazionale delle Ricerche (CNR), Istituto di Ricerca Sulle Acque (IRSA), Bari, Italy.

PMID: 38636342
DOI: 10.1016/j.marpolbul.2024.116376

Abstract

In the present study, we determined glyphosate (GPS) and aminomethylphosphonic acid (AMPA) in the water and sediments of the Ofanto River (Italy), evaluating their transport from the mouth to the sea. Sediments were collected twice in 2021 during low and high tide; waters were sampled on a seasonal basis. The results showed the prevalence of GPS and AMPA in the water with concentrations equal to 190 and 3053 ng/l, respectively. We also found GPS and AMPA in the sediments with values of 0.95 and 11.34 ng/g. In water, pesticides were detected in all seasons with peaks in concentrations during summer and spring. A significant positive correlation between the pesticides in the sediments and the water pH and a negative correlation with salinity was observed. An estimation of the average loads revealed a discharge of 64.11 kg/yr. of GPS and 958.37 kg/yr. of AMPA from the river to the marine environment.

Keywords: Agrochemicals; Estuaries; Italy; Plant protection products; Surface waters.