%0 Conference Paper %1 Azizi.2016 %A Azizi, Neda %A Kuch, Bertram %A Krauss, Manuel %A Steinmetz, Heidrun %B Sustainable rubber conference 2016 %D 2016 %E World Agroforestry Centre East and Central Asia, %K landmanagement lsww myown rubber watermanagement %T Seasonal occurrence of pesticides in a watershed of Xishuangbanna, Yunnan, China: Abstract %U http://sustainablerubber.org/conference-2016/abstracts/#23 %X Seasonal occurrence of pesticides in a watershed of Xishuangbanna, Yunnan, China by Neda Azizi 1, B. Kuch 2, M. Krauss 3, H. Steinmetz4 1 University of Stuttgart 2 University of Stuttgart 3 University of Stuttgart 4 University of Kaiserslautern Nowadays China is one of the largest producers and consumers of pesticides in the world. Due to the widespread and intensive use of pesticides and increasing water scarcity the impairment of water quality is of growing concern. Investigations of pesticide levels in Chinese environment mainly focus on densely populated and economically developed coastal regions and large water courses. The knowledge on the occurrence and fate of pesticides in Chinese remote regions and small river catchments is still low (Grung et al. 2015). Monitoring programs primarily determine representatives of the group of organochlorine pesticides (OCPs) such as DDT and HCH, which are regulated by law in China since 1982 (Wang et al. 2005). Only few data on currently used pesticides are known. In contrast to the OCPs, these substances are characterized by different physico-chemical properties (e.g. sorption tendency, transport behavior, bioaccumulation, water solubility and degradability). Accordingly, effects on environmental compartments (e.g. drinking water resources) manifest in a different way. This study focused on a preliminary pesticide inventory of the Naban river catchment on the basis of a non target screening. The tributary of the Mekong river is located in Jinghong County, Dai Autonomous Prefecture Xishuabanna of Yunnan Province (South China). As a result of this study currently used pesticides (e.g. atrazine and the degradation product desethylatrazine) were identified in the surface water in variable concentration levels and with shifting substance pattern. The results indicate the pronounced seasonal occurrence of these pesticides and the highly dynamic effects, which are caused by the individual structure of the small catchment and the local variety of land use.

@inproceedings{Azizi.2016, abstract = {Seasonal occurrence of pesticides in a watershed of Xishuangbanna, Yunnan, China by Neda Azizi 1, B. Kuch 2, M. Krauss 3, H. Steinmetz4 1 University of Stuttgart 2 University of Stuttgart 3 University of Stuttgart 4 University of Kaiserslautern Nowadays China is one of the largest producers and consumers of pesticides in the world. Due to the widespread and intensive use of pesticides and increasing water scarcity the impairment of water quality is of growing concern. Investigations of pesticide levels in Chinese environment mainly focus on densely populated and economically developed coastal regions and large water courses. The knowledge on the occurrence and fate of pesticides in Chinese remote regions and small river catchments is still low (Grung et al. 2015). Monitoring programs primarily determine representatives of the group of organochlorine pesticides (OCPs) such as DDT and HCH, which are regulated by law in China since 1982 (Wang et al. 2005). Only few data on currently used pesticides are known. In contrast to the OCPs, these substances are characterized by different physico-chemical properties (e.g. sorption tendency, transport behavior, bioaccumulation, water solubility and degradability). Accordingly, effects on environmental compartments (e.g. drinking water resources) manifest in a different way. This study focused on a preliminary pesticide inventory of the Naban river catchment on the basis of a non target screening. The tributary of the Mekong river is located in Jinghong County, Dai Autonomous Prefecture Xishuabanna of Yunnan Province (South China). As a result of this study currently used pesticides (e.g. atrazine and the degradation product desethylatrazine) were identified in the surface water in variable concentration levels and with shifting substance pattern. The results indicate the pronounced seasonal occurrence of these pesticides and the highly dynamic effects, which are caused by the individual structure of the small catchment and the local variety of land use.}, added-at = {2019-01-07T16:49:40.000+0100}, author = {Azizi, Neda and Kuch, Bertram and Krauss, Manuel and Steinmetz, Heidrun}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/28420b70baa510b8b82679e5780020057/makra}, booktitle = {Sustainable rubber conference 2016}, editor = {{World Agroforestry Centre East and Central Asia}}, interhash = {45a2343c05c3e54d2ad9313ab4d76316}, intrahash = {8420b70baa510b8b82679e5780020057}, keywords = {landmanagement lsww myown rubber watermanagement}, timestamp = {2019-01-08T15:13:10.000+0100}, title = {Seasonal occurrence of pesticides in a watershed of Xishuangbanna, Yunnan, China: Abstract}, url = {http://sustainablerubber.org/conference-2016/abstracts/#23}, urldate = {2017-02-10}, year = 2016 }