Abstract
The biodegradation of the chiral phenoxyalkanoic herbicides 2-(2,4- dichlorophenoxy)propionic aid (2,4-DP) and 2-(4-chloro-2- methylphenoxy)propionic acid (MCPP) was investigated using enantioselective HPLC and chiroptical detection. Racemic mixtures of 2,4-DP and MCPP were applied to three species of turf grass, four species of broadleaf weeds, and soil. Preferential degradation of the S- (-) enantiomer of each herbicide was observed in most species of broadleaf weeds and soil, while the degradation in all species of grass occurred without enantioselectivity. The biodegradation in all systems appeared to follow pseudo first-order kinetics with the fastest degradation occurring in broadleaf weeds, followed by the grasses. The slowest degradation was observed in soil. The results of this work illustrate the need to characterize both enantiomers of chiral agrochemicals in order to have an accurate understanding of their distribution and fate in the environment.
Recommended Citation
J. M. Schneiderheinze et al., "Plant and Soil Enantioselective Biodegradation of Racemic Phenoxyalkanoic Herbicides," Chirality, vol. 11, no. 4, pp. 330 - 337, Wiley, May 1999.
The definitive version is available at https://doi.org/10.1002/(SICI)1520-636X(1999)11:4<330::AID-CHIR12>3.0.CO;2-G
Department(s)
Chemistry
Publication Status
Full Access
Keywords and Phrases
Chirobiotic T; Column- switching; Enantioselective chromatography; Kinetics; Teicoplanin
International Standard Serial Number (ISSN)
0899-0042
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Wiley, All rights reserved.
Publication Date
06 May 1999
PubMed ID
10224660
