RT info:eu-repo/semantics/article
T1 Unexpected Occurrence of Volatile Dimethylsiloxanes in Antarctic Soils, Vegetation, Phytoplankton, and Krill
A1 Sanchís, Josep
A1 Cabrerizo, Ana
A1 Galbán-Malagón, Cristóbal
A1 Barceló, Damià
A1 Farré, Marinella
A1 Dachs, Jordi
AB Volatile methyl siloxanes (VMS) are high-production synthetic compounds, ubiquitously found in the environment of source regions. Here, we show for the first time the occurrence of VMS in soils, vegetation, phytoplankton, and krill samples from the Antarctic Peninsula region, which questions previous claims that these compounds are "flyers" and do not significantly reach remote ecosystems. Cyclic VMS are the predominant compounds, with concentrations ranging from the limits of detection to 110 ng/g in soils. Concentrations of cyclic VMS in phytoplankton are negatively correlated with sea surface salinity, indicating a source from ice and snow melting and consistent with snow depositional inputs. After the summer snow melting, VMS accumulate in the Southern Ocean and Antarctic biota. Therefore, once introduced into the marine environment, VMS are eventually trapped by the biological pump and, thus, behave as "single hoppers". Conversely, VMS in soils and vegetation behave as "multiple hoppers" due to their high volatility
PB American Chemical Society
SN 0013-936X
YR 2015
FD 2015
LK https://uvadoc.uva.es/handle/10324/65156
UL https://uvadoc.uva.es/handle/10324/65156
LA eng
NO Environmental Science and Technology. April 2015. Volume 49, Issue 7, Pages 4415 - 44247
NO Producción Científica
DS UVaDOC
RD 28-nov-2024