Contaminants of emerging concern fate and fluvial biofilm status as pollution markers in an urban river.

AMÉ, MARÍA VALERIA

CHEMOSPHERE

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2023

0045-6535

ontaminants of emerging concern (CEC) are still under research given the vast diversity of compounds reachingfreshwater ecosystems and adverse effects they might cause. In this study, the environmental fate of 73 CEC,comprising sweeteners, stimulants and several pharmaceutical therapeutic classes, and changes in fluvial biofilmphotosynthetic parameters were evaluated in a semi-arid urban river receiving diffuse and point sources ofpollution (Suquía river, Argentina). Out of the 37 CEC detected, 30 were quantified in surface water (n.d. ? 9826ng/L), 10 in biofilm (n.d. ? 204 ng/gd.w.) and 9 in the clay fraction of sediments (n.d. ? 64 ng/gd.w.). CECdistribute differently among the 3 matrices: water phase presents the biggest diversity of compounds (14 CEC families), being analgesic/anti-inflammatories the most abundant family. Antibiotics largely predominated inbiofilms (7 CEC families), while the stimulant caffeine and some antibiotics where the most abundant in sediments(6 CEC famili