Figure 1: Chemical structure of (a) atrazine [1-Chloro-3-ethylamino-5-isopropylamino-2, 4, 6-triazine] and (b) simazine [6-chloro-N, N’-diethyl-1, 3, 5-triazine-2, 4-diamine]. The solubility of atrazine and simazine in water is 5 mg/l and 30mg/l (pH 7, 25°C).