Kinetic and mechanistic aspects of the direct photodegradation of atrazine, atraton, ametryn and 2‐hydroxyatrazine by 254 nm light in aqueous solution

Abstract

Atrazine (1), Atraton (2) and Ametryn (3) are photodegraded upon 254 nm irradiation, yielding 2-OHatrazine (4) as a photoproduct. Dealkylation products are also generated, and 4-ethylamino-6-isopropylamino-(1,3,5)-triazine was also found as a photoproduct of 3. The main photoreaction is proposed to be an addition-elimination, yielding 4, which subsequently photodegrades. The ease of photodegradation depends on the electron availability at position C-2, the observed order of photoreactivity being 1 > 3 > 4 > 2.

Electrochemical Degradation of Atrazine in Aqueous Solution at a Platinum Electrode

“…Several degradation routes of atrazine and similar compounds have been proposed. These routes involve free radicals [12][13][14]. The following reactions have been proposed:…”

Water quality parameters controlling the photodegradation of two herbicides in surface waters of the Columbia Basin, Washington

“…Photodegradation pathways have previously been elucidated for the photolysis of atrazine and 2,4-D. The main photodegradation pathways for atrazine are dealkylation of the amine side-chains, and photosubstitution at the 2-position with the subsequent formation of the 2-hydroxy derivative (Azenha et al, 2003;Lanyi and Dinya, 2005). Previous studies have demonstrated involvement of hydroxyl radical in the indirect photolysis of 2,4-D (Aaron et al, 2010).…”

Online Monitoring the Water Contaminations with Optical Biosensor

“…Atrazine was obtained from Labor Dr. Ehrenstorfer, Augsburg. Aqueous solutions of atrazine were prepared and final concentrations were quantitated optically (ε263 = 35'000 M −1 ·cm −1 [1]). Monoclonal anti-atrazine antibodies were purchased either from Enzo Life Sciences, Switzerland (monoclonal anti-atrazine antibody [1F9]), or from Abcam TM , Cambridge UK (monoclonal anti-atrazine antibody [8.F.20]).…”