PMID: 16521575Mar 9, 2006Paper

Biochemical and photochemical degradation of the herbicide lontrel

Prikladnaia biokhimiia i mikrobiologiia
E A SaratovskikhE V Shtamm

Abstract

Degradation of Lontrel by activated sludge (AS) of purification works and UV irradiation was studied. 3,6-Dichloropicolinic acid (3,6-DCPA, the main active principle of Lontrel) was not degraded by the microbial association of the AS. AS treated with nitrosourea under various conditions did not oxidize Lontrel either. Hard UV radiation degraded 3,6-DCPA within 4-24 h at constant sparging (bubbling) of air, oxygen, or ozone. The rate of oxidation with oxygen or ozone bubbling was three to four times higher than with air bubbling. It was found that the products of photochemical degradation of Lontrel were also toxic; however, they were readily degraded by AS microorganisms without additional AS treatment.

References

May 1, 1985·The Science of the Total Environment·Y YoshiokaT Sato
Dec 24, 2003·American Journal of Industrial Medicine·Geoffrey M CalvertMichelle Lackovic
Jul 9, 2004·Environmental Health Perspectives·Robin M WhyattFrederica P Perera

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Citations

Apr 19, 2008·Journal of Biomaterials Science. Polymer Edition·L MoroniC A van Blitterswijk

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