Competitive sorption-desorption behavior of triazine herbicides with plant cuticular fractions

Michal Shechter, Baoshan Xing, Frank Dieter Kopinke, Benny Chefetz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Sorption interactions of plant cuticular matter with organic compounds are not yet fully understood. The objective of this study was to examine the competitive sorption-desorption interactions of the triazine herbicides (atrazine and ametryn) with cuticular fractions isolated from tomato fruits and leaves of Agave americana. The 13C NMR data suggest a rubber-like nature for the cutin. This biopolymer exhibited reversible and noncompetitive sorption. Enhanced desorption of atrazine was recorded in the bi-solute system with bulk and dewaxed A. americana cuticles. 13C NMR analyses of these samples suggested that the sorbed competitor ametryn facilitated a physical phase transition of rigid paraffinic sorption domain to mobile and flexible domain during sorption process. We suggest that the different sorption-desorption behavior obtained for the two cuticles is related to the higher content of waxes (14% vs 2.6%) and lower content of cutin (46% vs 75%) in the A. americana versus tomato fruit cuticle.

Original languageAmerican English
Pages (from-to)7761-7768
Number of pages8
JournalJournal of Agricultural and Food Chemistry
Issue number20
StatePublished - 4 Oct 2006


  • Atrazine
  • Cutan
  • Cutin
  • Desorption
  • Glass transition temperature
  • NMR
  • Paraffinic carbon
  • Plant cuticle
  • Sorption


Dive into the research topics of 'Competitive sorption-desorption behavior of triazine herbicides with plant cuticular fractions'. Together they form a unique fingerprint.

Cite this