Abstract
<p>The objective of this study is to develop a simple and economic spectrophotometric method for the quantitative determination of atrazine. This method is based on the complexation of atrazine derivatization (dechlorinated atrazine [DA]) with a mixture of formaldehyde and ketone compound, as described by Mannich reaction. The complex was determined by UV-Vis absorption measurement and the ketone compound used was the uranine due to its high coefficient absorption. The UV spectrum of the complex shows maxima of absorption at 207 nm and at 227 nm. An internal standard was used to quantify the atrazine. There is a good linearity between the absorbance and the concentration in the range of 0.1 - 10 ug.mL<sup>-1</sup> of atrazine. The recovery value was 97 % and the limit of detection was 0.01 ug.mL<sup>-1</sup>. Real samples collected from irrigation local area were analyzed using this method and the estimated concentration of atrazine found in the mentioned river is 0.29 ± 0.011 ug.mL<sup>-1</sup>.</p>
Highlights
Atrazine is widely used in agriculture, and their heavy uses have resulted in environmental pollution
The objective of this study is to develop a simple and economic spectrophotometric method for the quantitative determination of atrazine
Gas chromatography (GC) and high performance liquid chromatography (HPLC) are the techniques popularly used for the determination of atrazine and simazine (Usenko et al, 2005; Stalikas, Knopp & Niessner, 2002; Koal et al, 2003; Baranowska, Barchanska, & Pacak, 2006)
Summary
Atrazine is widely used in agriculture, and their heavy uses have resulted in environmental pollution Their persistent presence had been a serious problem, especially in surface and ground water systems (Gianessi & Marcelli, 2000). Atrazine herbicides were often used especially in Europe and the United States (Gianessi & Marcelli, 2000; Gammon et al, 2005), since they have been greatly used in maize cultivation and forestry. Their solubility in soil is low, and it can migrate along the food chain. Gas chromatography–mass spectrometry (GC-MS), amperometric immunosensor, and adsorptive stripping voltammetric determination were developed for the analysis of atrazine and simazine (Maleki et al, 2007; Grennan et al, 2003; Turiel et al, 1998; Nevado et al, 2007)
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