Relative mobilities of atrazine, atrazine degradates, metolachlor, and simazine in five soils from Iowa

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:214557

Coats, J R; Kruger, E L ^[1]; Zhu, Beilei ^[2]

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1. Iowa State Univ., Ames, IA (United States)
2. Beijing Agricultural Univ., Beijing (China)

The relative mobilities of atrazine, deethylatrazine, deisopropylatrazine, didealkylatrazine, hydroxyatrazine, ammeline, metolachlor and simazine were determined in soils from five locations in Iowa by soil thin-layer chromatography (TLC). Surface (0 to 30 cm) and subsurface (65 to 90 cm) soils taken from Ames, Treynor, Fruitland, Nashua, and Chariton were used to make soil TLC plates. Uniformly ring-labeled {sup 14}C chemicals were spotted on plates which were then developed by ascending chromatography using water as the solvent. Preliminary results from Ames, Treynor, and Fruitland soils indicate four groups based on relative mobilities. Deethylatrazine was the most mobile compound studied. The intermediate mobility group included atrazine, didealkylatrazine, and deisopropylatrazine. The less mobile group included metolachlor and simazine, however, metolachlor was, in some soils, in the intermediate mobility group. The immobile group included ammeline and hydroxyatrazine. Additional results from Nashua and Chariton soils, as well as correlations of mobility with soil characteristics will also be presented.

• OSTI ID: 214557
• Report Number(s): CONF-950801--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON 14
ENVIRONMENTAL TRANSPORT
LABELLED COMPOUNDS
ORGANIC COMPOUNDS
PESTICIDES
SOILS
THIN-LAYER CHROMATOGRAPHY