The Contribution of Herbicides on River Water Pollution: the case of Beressa River, Ethiopia | |
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( Volume 6 Issue 3,March 2020 ) OPEN ACCESS | |
Author(s): | |
Siyum Shewakena Beshahwored | |
Abstract: | |
The survival of living things on Earth depends on three basic resources: water, air and soil. Among which water is the most important component as it forms the basic medium for origin of life.The quality of water is affected by human activities and is declining due to the rise of urbanization, population growth, industrial production, climate change, and the farmer activities like using of herbicides. The researcher is concerned to check the contribution of herbicides in water pollution at the study area. An herbicide is a substance used to kill unwanted plants; the different herbicides which are originated from factories, farm areas have different risks for human beings, land animals and aquatic mammals. For the purpose of this research antrazine and terbutryn were selected since recently and frequently used in the study area. The main objective of this research is to optimize the method and determine the quantities of herbicides (atrazine and terbutryn) those are used by the farmers farming near to beressa river stream. The chemicals and reagents used for this research were analytical grade. Water samples of the Beressa River were collected from five different points of the river in a kilometer breach. The extraction and proportion of solvent were optimized; mobile phase ratio was (acetonitrile (22%), water (45%) and methanol (33%)); finally, 20 µL was injected into HPLC-DAD system for analysis. The concentrations of atrazine and terbutryn were determined; 143.709 and 157.682µg/l respectively. This indicates that the herbicides have pollution effect for river water. The present research results on the status of river water tells us to establish water processing plants in future, the requirement of which increases at a tremendous rate due to growth of population, herbicide contamination in river water. |
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