Organochlorine compounds in fish and sediments of the Syrdarya river (Kazakhstan) : a bioaccumulation survey coupled with a morphometric investigation - Archive ouverte HAL Access content directly
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Organochlorine compounds in fish and sediments of the Syrdarya river (Kazakhstan) : a bioaccumulation survey coupled with a morphometric investigation

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Abstract

In Kazakhstan, a deep ecological crisis has been caused by contamination of the environment with obsolete and expired pesticides (A. Nurzhanova et al., 2010). The Syr Darya (Kazakh) is a river in Central Asia that rises in two headstreams in the Tian Shan Mountains in Kyrgyzstan and eastern Uzbekistan-the Naryn River and the Kara Darya-and flows for some 2,212 kilometers (1,374 mi) west and north-west Uzbekistan and southern Kazakhstan to the remains of the Aral Sea. Disturbed aquatic ecosystems, biodiversity, and habitats are occurring in the Syr Darya, where factories, plants, and mining operations along the river present formidable environmental hazards (Blanchoud et al., 2009). In the present study, some organochlorine contaminants were determined in fish and sediments from the Syrdaria River Basin. Organochlorine pesticide (OCPs) sprays have high half-life, due to their chemical stability. Since they also exhibit a strong lipophilic character, they are prone to bioaccumulation. In Kazakhstan, hunting and fishing have become one of the fundamental sources of food, which may result in chronic exposure to OCPs via the diet, with potential health impacts. Numerous studies were carried out on biota of Caspian and Aral Sea, but very scarce information was collected for river fishes from this region.
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ineris-00970883 , version 1 (02-04-2014)

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Fabrizio Botta, N. Mamilov, Pierre Labadie, F. Alliot, Elodie Moreau-Guigon, et al.. Organochlorine compounds in fish and sediments of the Syrdarya river (Kazakhstan) : a bioaccumulation survey coupled with a morphometric investigation. 14. Symposium in pesticide chemistry "Pesticides in the environment : fate, modelling and risk mitigation", Aug 2011, Piacenza, Italy. ⟨ineris-00970883⟩
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