The Fate of Glyphosate and AMPA in a Freshwater Endorheic Basin: An Ecotoxicological Risk Assessment

BONANSEA, ROCÍO; FILIPPI, IOHANNA; WUNDERLIN, DANIEL; MARINO, DAMIÁN; AMÉ, MARÍA

Toxics

MDPI

Lugar: Basel; Año: 2017 vol. 6

lyphosate is themostwidely used herbicideworldwide. However, there are some uncertainaspects with respect to its environmental fate. To evaluate the existence and distribution of thispesticide and its metabolite, aminomethylphosphonic acid (AMPA), their presence in fresh water,sediment, and suspended particulate matter (SPM) was measured in samples collected in a riverrunning across a large city and through areas with intensive and extensive agriculture. The aquaticrisk associated to the occurrence of these compounds was estimated using the hazard quotient (HQ)calculation for water and sediment. From the analyzed samples, overall 35% contained glyphosate,AMPA, or both compounds. Concentrations of the analytes were spread in different percentagesdepending on the environmentalmatrices considered,with levels ranging from12 to 20 times higher forglyphosate and AMPA in sediment and SPM, as compared with the levels found in water. The mostpolluted area was situated within a green belt zone