 |
| Titel |
Assessing pesticide exposure of the aquatic environment in tropical catchments |
| VerfasserIn |
Frederik Weiss, Christian Zurbrügg, Rik Eggen, Luisa Castillo, Clemens Ruepert, Christian Stamm |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250106094
|
| Publikation (Nr.) |
 EGU/EGU2015-5747.pdf |
|
|
|
|
|
| Zusammenfassung |
| Today, pesticides are intensively used in agriculture across the globe. Worldwide about
2.4x106 tons of pesticides are used annually on 1.6x109 ha of arable land. This yields a
global average use of pesticides of 1.53 kg ha-1 year-1. Available data suggest that the use in
the agricultural sector will continue to grow. Recently it was estimated that within the last
decade, the world pesticide market increased by 93% and the Brazilian market alone by
190%.
Though pesticides are intensively used in many low and middle income countries (LAMICs),
scientifically sound data of amounts and types of pesticide use and the resulting impact on
water quality are lacking in many of these countries. Therefore it is highly relevant to: i)
identify risk areas where pesticides affect environmental health, ii) understand the
environmental behavior of pesticides in vulnerable tropical ecosystems; and iii)
develop possible mitigation options to reduce their exposure to ecosystems and
humans.
Here we present a project that will focus on assessing pesticide exposure of the aquatic
environment and humans in tropical catchments of LAMICs. A catchment in the Zarcero
province in Costa Rica will be the test case. Pesticide exposure will be assessed by passive
sampling. In order to cover a broad range of compounds of possible use, two sampling
devices will be used: SDB membranes for collecting polar compounds and silicon sheets for
accumulating apolar pesticides. Extracts will be subsequently analysed by GC-MSMS and
LC-HRMS. |
|
|
|
|
|
|