Summary
A simple and fast analytical method for the simultaneous determination of the herbicides isoproturon (N-(4-isopropylphenyl)-N'N'-dimethyl-urea), dichlorprop-p ((+)-2-(2,4-dichlorophenoxy)-propionic acid), bifenox (methyl-5-(2,4-dichlorophenoxy)-2-nitro-benzoate), and its main metabolite bifenox acid (5-(2,4-dichloro-phenoxy)-2-nitro-benzoic acid) in soils is described. The herbicides differ substantially in their physical and chemical properties. The soil extraction with a mixture of CH2Cl2, C2H5OH, and acetone, followed by an isocratic RP-HPLC determination yields high, reproducible recoveries for all compounds. The method can be used for different soil moisture and pH conditions. The detection limits range from 0.01 to 0.03 mg active compound/kg dry soil. An additional clean-up using size exclusion techniques can improve the detection limits to 0.003 to 0.007 mg active compound/kg dry soil. The method is suitable for routine residue analyses and applicable to other herbicides as well.
Similar content being viewed by others
References
Steinwandter H (1991) Fresenius J Anal Chem 339:30
Blaß W (1991) Fresenius J Anal Chem 339:340
Pérez S, García-Baudín JM, Tadeo JL (1991) Fresenius J Anal Chem 339:413
Gauglitz G, Neubauer HP (1990) GIT Fachz Lab 6:786
Lopez-Avila V, Northcutt R, Onstot J, Wickham M (1983) Anal Chem 55:881
Kiang PH, Grob RL (1986) J Environ Sci Health 21:15
Weil H, Haberer K (1991) Fresenius J Anal Chem 339:405
Deutsche Forschungsgemeinschaft (1989) Rückstandsanalytik von Pflanzenschutzmitteln, Methodensammlung der Arbeitsgruppe „Analytik“, Weinheim, Verlag Chemie
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Klöppel, H., Haider, J., Hoffmann, C. et al. Simultaneous determination of the herbicides isoproturon, dichlorprop-p, and bifenox in soils using RP-HPLC. Fresenius J Anal Chem 344, 42–46 (1992). https://doi.org/10.1007/BF00324840
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00324840