Microcalorimetry of the degradation of the herbicide 2,4-D via the microbial population on a typical Brazilian red Latosol soil

Citation
Ags. Prado et C. Airoldi, Microcalorimetry of the degradation of the herbicide 2,4-D via the microbial population on a typical Brazilian red Latosol soil, THERMOC ACT, 371(1-2), 2001, pp. 169-174
Citations number
24
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
THERMOCHIMICA ACTA
ISSN journal
00406031 → ACNP
Volume
371
Issue
1-2
Year of publication
2001
Pages
169 - 174
Database
ISI
SICI code
0040-6031(20010426)371:1-2<169:MOTDOT>2.0.ZU;2-R
Abstract
The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) was applied to a typic al Brazilian red Latosol soil. The thermal effects evolved by 2,4-D degrada tion were followed in a series of microcalorimetric experiments. The power- time curves were recorded for increasing doses of herbicide. varying from 0 to 6.67 mg g(-1) under a 34.8% controlled humidity. The herbicide was used as a food source by soil microbes, the degradation causing the thermal eff ect. The thermal effect increases to 2.67 mg g(-1). Above this concentratio n, a decrease of the thermal effect was observed due to toxicity of 2,4-D t o the microbes. (C) 2001 Elsevier Science B.V. All rights reserved.