Journal of Food, Agriculture and Environment

Measurement of residue levels of agro-chemicals in water and sediment of Aras River

Author(s):

Fatemeh Nasehi, E. Fataei *

Recieved Date: 2011-11-18, Accepted Date: 2012-01-03

Abstract:

Extreme use of pesticides and the adjacency of agricultural lands to rivers have brought about the contamination of water sources. Identifying the residue level of pesticides in water and sediments has been considered as one of the important measures for management of aquatic ecosystems. Aras River is one of the main rivers of Ardabil province in respect of agriculture. This river rises from Turkey’s Bingol Daghlari (mountains) and after crossing from countries of Turkey, Armenia, Iran and Azerbayjan, flows into Khazar Sea (Caspian). Aras catchment basin, due to its vastness, receives annually a considerable amount of those agricultural toxins which are widely used by agronomists. The present study by a cross-sectional design was conducted over one year (March 2010 – February 2011) in that part of Aras River which crosses Mughan (situated at the northern part of Ardabil province). In the current study 20 water samples and 20 sediment samples were collected from 5 sites, during four seasons of the year. After extraction and concentration, toxins were detected and their levels were identified by means of GC-MS. Based on the results of analysis, the residue levels of pesticides (endosulfan, Dursban and fenproparthrin) were determined for the water samples collected in spring and summer, but their levels were very slight in autumn and winter. The examination of sediment samples revealed the presence of (2,4-D) in autumn and winter and Dursban only in spring. Because of the high debbi of Aras River and non detection of toxin residues in autumn and winter as well as supervision of agricultural campaign over the use of pesticides, one can be optimistic about the improvement of Aras Rivers’ quality. 

Keywords:

Pesticide, residue of toxins, Aras River, Ardabil, Iran

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Environment
Pages: 933-936

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