Article Cite This: Environ. Sci. Technol. XXXX, XXX, XXX−XXX
pubs.acs.org/est
Seasonal Dynamics of Glyphosate and AMPA in Lake Greifensee: Rapid Microbial Degradation in the Epilimnion During Summer Sebastian Huntscha,† Michael A. Stravs,‡,§ Andreas Bühlmann,† Christian H. Ahrens,†,∥ Jürg E. Frey,† Francesco Pomati,‡,⊥ Juliane Hollender,‡,§ Ignaz J. Buerge,† Marianne E. Balmer,† and Thomas Poiger*,† †
Agroscope, Schloss 1, 8820 Wädenswil, Switzerland Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland § ETH Zurich, Institute of Biogeochemistry and Pollutant Dynamics, 8092 Zürich, Switzerland ∥ Swiss Institute of Bioinformatics (SIB), Schloss 1, 8820 Wädenswil, Switzerland ⊥ ETH Zurich, Institute for Integrative Biology, 8092 Zürich, Switzerland ‡
S Supporting Information *
ABSTRACT: Occurrence and fate of glyphosate, a widely used herbicide, and its main metabolite AMPA was investigated in Lake Greifensee, Switzerland. Monthly vertical concentration profiles in the lake showed an increase of glyphosate concentrations in the epilimnion from 15 ng/L in March to 145 ng/L in July, followed by a sharp decline to
