Results 171 to 180 of about 21,736 (225)

Atrazine metabolism in sorghum. Catabolism of the glutathione conjugate of atrazine

Journal of Agricultural and Food Chemistry, 1973
The major pathway of atrazine metabolism in intact sorghum was shown to involve the following steps: atrazine 'right arrow' S-(4-ethylamino-6-isopropylamino-1,3,5-triazin-2-yl)glutathione 'right arrow' gamma -glutamyl-S-(4-ethylamino-6-isopropylamino-1,3,5-triazin-2-yl)cysteine 'right arrow' S-(4-ethylamino-6-isopropylamino-1,3,5-triazin-2-yl cysteine '
G L, Lamoureux, L E, Stafford, R H, Shimabukuro, R G, Zaylskie   +3 more
openaire   +2 more sources

Dimerization constants of atrazine and trifluoromethyl-labeled atrazine

The Journal of Physical Chemistry, 1993
A nonlinear optimization procedure is developed to find the dimerization constants of atrazine from the NMR chemical shifts of four of its NH protons. The NH protons identify four active sites which interact pairwise by cooperative association to form a total of 10 hydrogen-bonded dimers.
Gereon Welhouse, Phillip Barak, William F. Bleam   +2 more
openaire   +1 more source

Leaching of Metolachlor, Atrazine, and Atrazine Metabolites into Groundwater

Transactions of the ASAE, 1994
A three-year field study was undertaken between 1988 and 1990 to investigate the leaching of metolachlor, atrazine and two of its N-dealkylated products, deethylatrazine and deisopropylatrazine, into the groundwater zone of two agricultural soils of Eastern Canada, a St-Amable sand and a St-Laurent clay.
null L. Masse, null S. O. Prasher, null S. U. Khan, null D. S. Arjoon, null S. Barrington   +4 more
openaire   +1 more source

Epidemiology of Atrazine

1995
Chronically exposed workers in chemical plants have revealed no increased incidence of benign or malignant disease attributable to atrazine. Some case-control studies showed a slight increase of non-Hodgkin's lymphoma (NHL) incidence while others were negative. Weighted evidence supports no causal association of malignant changes in farming populations
openaire   +2 more sources

Adsorption of Atrazine on Smectites

Soil Science Society of America Journal, 1992
Abstract Smectites may strongly influence the fate of pesticides in soils due to their large surface area and abundance in agricultural soils. This research was undertaken to determine the effects of smectite properties on the affinity of smectitic clays for atrazine (2‐chloro‐4‐ethylamino‐6‐isopropylamino‐1, 3, 5
Laird, D.A., Barriuso, E., Dowdy, R.H., Koskinen, W.C.   +3 more
openaire   +2 more sources

Urinary atrazine metabolites as indicators for rat and human exposure to atrazine

Toxicology Letters, 1988
Rats were given atrazine (2-chloro-4-ethylamino-6-(isopropylamino)-s-triazine) in drinking water for 1 or 3 weeks at 0.1 (0.45 mM), 0.2 (0.9 mM) or 0.5 g/l (2.3 mM) concentrations of the commercial agent. They excreted at both time points as the principal metabolite 2-chloro-4-ethylamino-6-amino-s-trazine in a dose-dependent fashion.
R, Ikonen, J, Kangas, H, Savolainen
openaire   +2 more sources

Disposition of Atrazine Metabolites Following Uptake and Degradation of Atrazine in Switchgrass

International Journal of Phytoremediation, 2013
Extensive use of the agricultural herbicide atrazine has led to contamination of numerous ground and surface water bodies. Research has shown that it can have a variety of negative impacts on numerous non-target organisms in the environment. Phytoremediation is one strategy that has been studied to remove atrazine contamination. This paper investigates
Albright, Vurtice, Coats, Joel
openaire   +3 more sources

ATRAZINE REMEDIATION IN WETLAND MICROCOSMS

Environmental Toxicology and Chemistry, 2001
Abstract Laboratory wetland microcosms were used to study treatment of atrazine in irrigation runoff by a field-scale-constructed wetland under controlled conditions. Three experiments, in which 1 ppm atrazine was added to the water column of three wetland, one soil control, and one water control microcosm, were conducted.
H B, Runes, P J, Bottomley, R N, Lerch, J J, Jenkins   +3 more
openaire   +2 more sources

Fitness drift of an atrazine‐degrading population under atrazine selection pressure

Environmental Microbiology, 2008
Summary Pseudomonas sp. ADP harbouring the atrazine catabolic plasmid ADP1 was subcultured in liquid medium containing atrazine as sole source of nitrogen. After approximately 320 generations, a new population evolved which replaced the initial population.
Devers, Marion, Rouard, Nadine, Martin-Laurent, Fabrice   +2 more
openaire   +4 more sources

Fate of Atrazine and Atrazine Degradates in Soils of Iowa

1996
Several studies have been conducted to investigate the fate of atrazine (ATR, 2-chloro-4[ethylamino]-6[isopropylamino]- s -triazine) and major degradation products of ATR in soils of Iowa by using laboratory radiotracer studies, field lysimeters, and a field-scale approach.
Kruger, Ellen, Coats, Joel
openaire   +2 more sources