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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9168

Title: Atrazine level in air particulate matter in the Kumasi Metropolis and its environs
Authors: Lamptey, Kozah Daniel
Issue Date: 7-Oct-2016
Abstract: Atrazine is a widely used pre- and post-emergence herbicide to selectively control weed growth. A total of 40 air particulate samples were collected on filter papers from all the 8 urban and farming communities. A Sibata Low Volume pump (Model LV- 40) air sampler was mounted at a height of 1.5 m during sampling at each of the sites. Air samples were collected by continuously pumping air through a filter paper fixed in the sample inlet of the sampler for 8 hours at a flow rate of 30 L/min and a temperature of 25 oC. A total volume of 14.4 m3 of air was sampled. In all, about 20 mL of acetonitrile was used to extract the air samples through 5-minute ultrasonication. High Performance Liquid Chromatograph (Varian Inc, USA) coupled with a UV detector (HPLC-UV) fitted to autosampler (model 410 Varian, USA) was used to analyse the samples based on modified Multi-Residue Method (MRM, GSA- T 24) by Ghana Standards Authority (GSA). The mobile phase involves acetonitrile/water (80:20 % v/v) for separation at a flow rate of 1.5 mL/min with a detection within 6 mins at a wavelength of 254 nm. The mean concentrations in the urban areas were found to be 0.28 ± 0.55 pg/m3 each for Suame and Gyinyase communities. Buokrom Estate had 0.29 ± 0.55 pg/m3 while 0.53 ± 1.05 and 1.05 ± 2.10 pg/m3 was obtained for Tanoso and Kejetia communities respectively. The mean concentrations for farming communities include: 12.72 ± 7.69, 13.34 ± 10.70 and 16.48 ± 17.17 pg/m3 for Nkawie-Toase, Afari and Mpasatia respectively. All the mean concentrations were found to be less than WHO Threshold Risk Value (TRV) of 5.0 ng/m3. The health risk indices for children in the farming communities were more than one indicating potential atrazine hazards.
Description: A thesis submitted to the Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi in partial fulfillment for the award of Master of Philosophy (M.Phil.) in Analytical Chemistry, 2016.
URI: http://hdl.handle.net/123456789/9168
Appears in Collections:College of Science

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