Studying the Hinosan toxin leak into underground water Studying the Hinosan toxin leak into underground water resources using GC-ECD and its elimination by active carbon

Authors

1 Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran.

2 2Department of chemistry, Arak Branch, Islamic Azad University, Arak, Iran

3 Young Researchers and Elite Club, Quchan Branch, Islamic Azad University, Quchan, Iran

4 Department of chemistry, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Abstract

Contamination of water resources by pesticide toxins is considered as one of environmental issues which is because of plant pest diversity and subsequently use of various toxicants. In previous decades all over the world, the usage of organophosphorus toxins in order to preservation of agriculture products expanded. In Gilan province (Iran) there are numerous agriculture lands and gardens which are sprayed intermittently and since drinking water of the region residents is rather supplied by underground waters, then penetration of toxicants into the wells is possible. For this reason pesticide toxicants use could be a treat for drinking water supplying resources of this state. In the paper, samples of water from ten wells were collected and for measuring the quantities of toxicants, experiments were carried out during 4 seasons of year. Toxicant residues in samples were analyzed according to Gas Chromatography–Electron Capture Detector (GC-ECD) method. Due to phosphorous toxicant analyze results; it is revealed that in some cases precipitation amount has a great effect on toxicant concentration inside well water because of leaching higher layers. Also it is indicated that clay presence in soil due to toxicant holding and rain or flood occurrence cause to decrease and increase toxicant leak into the underground water respectively. Finally in order to Hinosan toxicant removal from water resources, active carbon has been utilized. The results indicated that adsorption by active carbon was of Langmuir type and this adsorbent effective cause to eliminate Hinosan toxin from water resources.

Keywords


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