Pagare, Margret (2014) HPLC Determination of Atrazine in Water and Sediment Samples after Liquid-Liquid and Solid Phase Extraction: A Comparative Study. Masters thesis, University of Zimbabwe.
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Abstract
Atrazine is a selective herbicide for control of broadleaf and grassy weeds in corn, sorghum and sugarcane. The extraction efficiency was studied using distilled water, river water and sediment samples. A two-step procedure of extraction and quantification was involved in assessing the recovery of the atrazine residues. Liquid-Liquid and Solid Phase were used for the extraction step. The recoveries for atrazine using the LLE (40ml solvent) were 93.3 2.7%, 94.7 11% and 71.4% for river water, distilled water and sediment sample respectively. The recoveries for atrazine using solid phase with pre-treatment of distilled, river water and sediment sample were 96.6 2.8 %, 91.7 3.6% and 113.9 3 % respectively. Analysis for atrazine residues was performed by HPLC-UV. The results showed that extraction efficiency is greater with Solid phase extraction than with liquid-liquid extraction.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | G Geography. Anthropology. Recreation > GB Physical geography Q Science > QD Chemistry |
| Divisions: | Africana |
| Depositing User: | Tim Khabala |
| Date Deposited: | 15 May 2018 08:02 |
| Last Modified: | 15 May 2018 08:02 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/4002 |
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