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Interaction of Diclofop and Diclofop-Methyl with Al3+-, Fe3+-, and Cu2+-Saturated Montmorillonite

Published online by Cambridge University Press:  02 April 2024

A. Pusino ,
G. Micera ,
C. Gessa  and
S. Petretto
A. Pusino
Affiliation:
Istituto di Chimica Agraria, Università di Sassari, Via E. de Nicola 10, 07100 Sassari, Italy
G. Micera
Affiliation:
Dipartimento di Chimica, Università di Sassari, Via Vienna 2, 07100 Sassari, Italy
C. Gessa
Affiliation:
Istituto di Chimica Agraria, Università di Sassari, Via E. de Nicola 10, 07100 Sassari, Italy
S. Petretto
Affiliation:
Istituto di Chimica Agraria, Università di Sassari, Via E. de Nicola 10, 07100 Sassari, Italy
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Abstract

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The adsorption from chloroform solution of the herbicide diclofop, (RS)-2-(4-(2,4-dichlorophenoxy)phenoxy)propionic acid, and its methyl ester diclofop-methyl on Cu2+-, Al3+-, and Fe3+-exchanged bentonite samples was investigated. For comparison, the complexes formed by diclofop were synthesized and studied. Diclofop adsorbed on the clays and formed carboxylate bonds to the interlayer ions. Diclofop-methyl also adsorbed, but its interaction involved the formation of hydrogen bonds with water molecules in the interlayer. Traces of diclofop were observed in both the solution and the clays after adsorption of diclofop-methyl, indicating that some hydrolysis of the ester to the corresponding acid occurred. Thus, pesticides forming neutral complexes with interlayer cations in montmorillonite in soils may be extractable by solvents and therefore released into the environment.

Keywords

AdsorptionBentoniteDiclofopDiclofop-methylInterlayer cationsInterlayer complexesMontmorillonitePesticide
Type
Research Article
Information
Clays and Clay Minerals , Volume 37 , Issue 6 , December 1989 , pp. 558 - 562
Copyright
Copyright © 1989, The Clay Minerals Society

References

Bandemer, S. L. and Schaible, R. J., 1944 Determination of iron. A study of the o-phenanthroline method Ind. Eng. Chem. Anal. Ed. 16 317 – 319.CrossRefGoogle Scholar
Brown, G. M. and Chidambaram, R., 1973 Dinuclear coppelli) acetate monohydrate: A redetermination by neutron-diffraction analysis Acta Crystallogr. B29 2393 – 2403.CrossRefGoogle Scholar
Chenery, E. M., 1948 Thioglycollic acid as an inhibitor for iron in the colorimetrie determination of Al by means of “aluminon” Analyst 73 501 – 502.CrossRefGoogle Scholar
Crosby, D. G., 1976 Non biological degradation of herbicides in the soil Herbicides 2 65 – 97.Google Scholar
Gessa, C., Pusino, A., Solinas, V. and Petretto, S., 1987 Interaction of Fluazifop-butyl with homoionic clays Soil Sci. 144 420 – 424.CrossRefGoogle Scholar
Karanth, N. G. K. Anderson, J. P. E. and Domsch, K. H., 1984 Degradation of the herbicide diclofop-methyl in soil and influence of pesticide mixture on its persistence J. Biosc. 6 829 – 837.CrossRefGoogle Scholar
Micera, G., Pusino, A., Gessa, C. and Petretto, S., 1988 Interaction of Fluazifop with Al-, Fe3+-, and Cu2+-saturated montmorillonite Clays & Clay Minerals 36 354 – 358.CrossRefGoogle Scholar
Mortland, M. M., 1970 Clay-organic complexes and interactions Adv. Agron. 22 75 – 119.CrossRefGoogle Scholar
Mortland, M. M. and Bailey, S. W., 1975 Interactions between clays and organic pollutants Proc. Inter. Clay Conf., Mexico City, 1975 Illinois Applied Publishing, Wilmette 469 – 475.Google Scholar
Nebesar, B., 1964 Spectrophotometric determination of Cu in Te and related thermoelectric compounds of the Bi tel-luride type with 2,9-dimethyl-1,1 O-phenanthroline Anal. Chem. 36 1961 – 1965.CrossRefGoogle Scholar
Pusino, A., Micera, G., Premoli, A. and Gessa, C., 1989 D-Glucosamine sorption on Cu(II)-montmorillonite as the protonated and neutral species Clays & Clay Minerals 37 377 – 380.CrossRefGoogle Scholar
Smith, A. E., 1976 Esterification of the hydrolysis product of the herbicide dichlorfop-methyl in methanol J. Agric. Food Chem. 24 1077 – 1078.CrossRefGoogle ScholarPubMed
Smith, A. E., 1977 Degradation of the herbicide diclofop-methyl in prairie soils J. Agric. Food Chem. 25 893 – 898.CrossRefGoogle ScholarPubMed
Smith, A. E., Grover, R., Cessna, A. J., Stewchuck, S. R. and Hunter, J. H., 1986 Fate of diclofop-methyl after application to a wheat field J. Environ. Qual. 15 234 – 238.CrossRefGoogle Scholar