@article{fdi:010093053, title = {{A}dsorption and mineralization of metalaxyl-m and chlorpyrifos in irrigated {M}editerranean soil under the effects of salinity}, author = {{K}houni, {M}. and {G}runberger, {O}livier and {N}egro, {S}. and {H}ammecker, {C}laude and {C}haabane, {H}.}, editor = {}, language = {{ENG}}, abstract = {{T}o evaluate the effects of salinity on the fate of pesticides in a {M}editerranean irrigated system, experiments were carried out under laboratory conditions to determine the adsorption, desorption, and mineralization of chlorpyrifos ({CPF}) and metalaxyl-{M} ({MET}) in a soil sample from an irrigated field in northern {T}unisia. {A}dsorption/desorption isotherms and mineralization kinetics data were obtained over a realistic range of salinities via batch equilibrium and incubation techniques. {O}n the basis of the experimental results, {MET} has a lower sorption capacity than {CPF} does, and the adsorption data for both compounds were better fitted by the {F}reundlich equation, with {K}f values of 0.477, 0.486, 0.426, 0.444 and 0.474 {L} kg-1 for {MET} and 38.994, 39.084, 40.644, 44.055 and 45.185 {L} kg-1 for {CPF} at salinities of 0, 1, 2, 5 and 10 g {L}-1, respectively. {A}ccording to the mineralization experiments, increasing salinity increased the half-lives of both pesticides. {F}or {MET}, the {DT}50 values in unsterilized soil were 206.68, 220.74, 222.16, and 238.73 days, and those in sterilized soil were 2772.58, 4077.33, 6301.33, and 8664.33 days at salinities of 0, 1, 2, 5, and 10 g {L}-1, respectively. {F}or {CPF}, the {DT}50 values were 115.52, 138.62, 157.53, and 177.73 days in unsterilized soil and 346.57, 533.19, 693.14, and 990.21 days in sterilized soil. {I}n terms of leaching behavior, the calculated groundwater ubiquity score ({GUS}) values for the {MET} and {CPF} indicate that the {MET} is classified as a leacher and that the {CPF} is classified as a nonleacher.}, keywords = {{MEDITERRANEE} ; {TUNISIE} ; {LEBNA} ; {CAP} {BON} {REGION}}, booktitle = {}, journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch}, volume = {31}, numero = {54}, pages = {63016--63032}, ISSN = {1614-7499}, year = {2024}, DOI = {10.1007/s11356-024-35411-2}, URL = {https://www.documentation.ird.fr/hor/fdi:010093053}, }