TY  - JOUR
AU  - Martinazzo, R.
AU  - Jablonowski, N. D.
AU  - Hamacher, G.
AU  - Dick, D. P.
AU  - Burauel, P.
TI  - Accelerated Degradation of 14C-Atrazine in Brazilian Soils from Different Regions
JO  - Journal of agricultural and food chemistry
VL  - 58
SN  - 0021-8561
CY  - Washington, DC [u.a.]
PB  - American Chemical Society (ACS)
M1  - PreJuSER-11177
SP  - 7864 - 7870
PY  - 2010
N1  - We gratefully acknowledge financial support from the National Council for Scientific and Technological Development (CNPq), Brazil, and the German Academic Exchange Service (DAAD).
AB  - The repeated use of a given pesticide may induce a selection of the soil microbial population, resulting in a rapid degradation of the respective xenobiotic. Patterns of atrazine degradation (mineralization, formation of metabolites and nonextractable residues (NER)) were evaluated in two Brazilian soils with a history of atrazine application. Results were compared with those obtained from soils that had no agricultural use or herbicide application history. (14)C-Atrazine mineralization in unsaturated treated soils was high. By the 85th day of incubation, 82% of the applied (14)C-atrazine was mineralized in the Rhodic Hapludox and 74% in the Xanthic Haplustox. Mineralization remained low in nontreated soils (<or=5.1%). Incubation under slurry conditions enhanced atrazine mineralization in the treated Xantic Haplustox and surprisingly also in the nontreated Rhodic Hapludox (98 and 83% on the 85th day, respectively), whereas in the other samples the evolved (14)CO(2) did not differ (p < 0.05) from the unsaturated conditions. The water-extractable amount of atrazine directly after (14)C-atrazine application was higher in both Xanthic Haplustox samples (around 80% of applied atrazine) in comparison to the Rhodic Hapludox samples (around 60%). Extractable activity and the formation of metabolites and NER varied among the studied soils according to the atrazine application history rather than the soil characteristics.
KW  - Atrazine: analysis
KW  - Brazil
KW  - Carbon Isotopes: analysis
KW  - Herbicides: analysis
KW  - Soil: analysis
KW  - Carbon Isotopes (NLM Chemicals)
KW  - Herbicides (NLM Chemicals)
KW  - Soil (NLM Chemicals)
KW  - Atrazine (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20557132
UR  - <Go to ISI:>//WOS:000279573900048
DO  - DOI:10.1021/jf100549d
UR  - https://juser.fz-juelich.de/record/11177
ER  -