RC of Atrazine (mg/l) Cell SoilE   Exposure Time (Days)   0 3 6 9 12 15 18 21   I 30.94 24.9 19 0.36 0.29 0.07 0.01 ND   II 27.43 22.71 1.42 0.26 0.07 0.04 ND ND   III 29.63 8.01 1.35 0.17 0.06 0.03 ND ND   IV 30.08 5.71 1.17 0.15 0.05 0.015 ND ND SoilH RC of Atrazine (mg/l) Cell Exposure Time (Days)   0 3 6 9 12 15 18 21   I 30.16 15.54 17.24 0.48 0.31 0.27 0.037 0.009   II 30.61 13.56 2.31 0.16 0.069 0.025 0.012 ND   III 30.85 11.95 2.2 0.08 0.047 0.019 ND ND   IV 30.03 5.22 1.69 0.06 0.036 0.012 ND ND

Table 1: Residual Concentration (RC) of Atrazine in SoilE and SoilH Using the Selected Bioremediation Techniques at Different Exposure Times