Interaction of amino acids with the herbicides diquat and paraquat studied by charge-transfer chromatography

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The interaction of the amino acids and some peptides with the herbicides diquat and paraquat was determined by reversed-phase charge-transfer chromatography. Only charged amino acids and gluthathion (both reduced and oxidized forms) influenced the mobility of diquat and paraquat. The strength of interaction increased in the order: aspartic acid > gluthathione oxidized > gluthathione reduced > ornithine > cysteine ≈ glutamic acid > lysine. No significant difference was found between the effects of D and L forms of aspartic acid. Except cysteine the strength of interaction was similar on cellulose and on reversed-phase layers. The strength of interaction nonlinearly decreased with growing concentration of Ca2+ ions in the eluent proving the hydrophilic character of interaction. Glutamic acid-ornithine and glutamic acid-lysine mixtures did not show lower interactive strength than the single amino acids although interactions of commensurable strength were also observed between these amino acids. This finding supports the possible formation of dibasic amino acid-dicarboxylic amino acid-herbicid complexes of unknown stoichiometry.

Original languageEnglish
Pages (from-to)305-310
Number of pages6
JournalChromatographia
Volume26
Issue number1
DOIs
Publication statusPublished - Dec 1988

Fingerprint

Diquat
Paraquat
Herbicides
Chromatography
Charge transfer
Amino Acids
Glutamic Acid
Ornithine
Glutathione Disulfide
Aspartic Acid
Lysine
Glutathione
Cysteine
Dicarboxylic Amino Acids
Diamino Amino Acids
L Forms
Hydrophobic and Hydrophilic Interactions
Cellulose
Stoichiometry
Ions

Keywords

  • Amino acids
  • Charge-transfer chromatography
  • Diquat
  • Paraquat

ASJC Scopus subject areas

  • Analytical Chemistry
  • Clinical Biochemistry

Cite this

Interaction of amino acids with the herbicides diquat and paraquat studied by charge-transfer chromatography. / Cserháti, T.; Szogyi, M.; Szigeti, Z.

In: Chromatographia, Vol. 26, No. 1, 12.1988, p. 305-310.

Research output: Contribution to journalArticle

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