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Interaction of Aquatic Dissolved Organic Matter(DOM) with Amitrole: The Nature of the Bound Residues

Interaction of Aquatic Dissolved Organic Matter(DOM) with Amitrole: The Nature of the Bound Residues In this study the binding behaviour of the herbicide amitrole with humic substances respectively dissolved organic matter (DOM) is presented. The results of the binding and release experiments using radio actively 14C‐labelled amitrole ledto the conclusion that the binding of amitrole is very low. About 70% of amitrole bound to humic substances was not extractable. The releasable amitrole portion of the purified DOM‐amitrolecomplexes led to a harmful effect in the cress test. Solid‐state cross polarisation (CP) magic angle spinning (MAS) 15N‐NMR spectroscopy is a powerful spectroscopic method to elucidate the structure of bound xenobiotics. In addition extraction experiments were used resulting in a binding scheme of amitrole to DOM, where above all the covalent bonding occurred via acid amide bonds. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta hydrochimica et hydrobiologica Wiley

Interaction of Aquatic Dissolved Organic Matter(DOM) with Amitrole: The Nature of the Bound Residues

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Publisher
Wiley
Copyright
Copyright © 1998 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0323-4320
eISSN
1521-401X
DOI
10.1002/(SICI)1521-401X(199811)26:6<311::AID-AHEH311>3.0.CO;2-X
Publisher site
See Article on Publisher Site

Abstract

In this study the binding behaviour of the herbicide amitrole with humic substances respectively dissolved organic matter (DOM) is presented. The results of the binding and release experiments using radio actively 14C‐labelled amitrole ledto the conclusion that the binding of amitrole is very low. About 70% of amitrole bound to humic substances was not extractable. The releasable amitrole portion of the purified DOM‐amitrolecomplexes led to a harmful effect in the cress test. Solid‐state cross polarisation (CP) magic angle spinning (MAS) 15N‐NMR spectroscopy is a powerful spectroscopic method to elucidate the structure of bound xenobiotics. In addition extraction experiments were used resulting in a binding scheme of amitrole to DOM, where above all the covalent bonding occurred via acid amide bonds.

Journal

Acta hydrochimica et hydrobiologica – Wiley

Published: Nov 1, 1998

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