Predicting Freundlich adsorption isotherm of atrazine on Japanese soils

Atrazine and picloram adsorption in organic horizon forest samples under laboratory conditions

“…The Freundlich isotherm has been commonly used in studies of adsorption, and it is well suited to the adsorptive behavior of herbicide (Ebato et al, 2001). The atrazine isotherm resulted in high Freundlich constants (Table 4).…”

Estimation of buffering capacity of mangrove soils by using hydrophobic organic compounds, atrazine and linuron

“…Adsorption experiments were carried out using the batch equilibration procedure with seven concentrations each of atrazine (46,70,97,116,139,185, and 232 fLmol L-I) and linuron (40,60,80,100,120,160, and 201 fLmol L-I). Samples 10 g each and 20 mL of a 0.01 mol L-I CaCI 2 solution containing atrazine (l:2 soil (wt) / solution (wt) ratio) were placed in 50 mL Teflon centrifuge tubes, which were then sealed with a Teflon screw cap (Ebato et al 2001(Ebato et al , 2002. Suspensions were shaken at 25 ± 2"C for 24 h on a rotary shaker and centrifuged at 1,500 X 9 for 15 min.…”

Identification of adsorption conditions fulfilling the correlation between freundlich isotherm coeficients, logKFand 1/nby computer simulation

“…1/ n = -0.16 X log KF + 0.99 atrazine adsorption on Japanese soils (Ebata et al 2001) 1/ n = -0.18 X log KF + 0.85 linuron adsorption on Japanese soils (Ebato et al 2002) 1/11 = (-0.18 ± 0.008) X log KF + (0.572 ± 0.011) hydrocarbon adsorption by active carbons (Abe et al 1982) Based on the results obtained by Abe (1984Abe ( , 1991, in the relationship between log KF and 1 / n for hydrophobic adsorption, the slopes of the regression lines had the same value, -0.18, which was not related to the nature of the adsorbate and adsorbent. However, the intercepts of the regression lines were different.…”