In:
Soil Science Society of America Journal, Wiley, Vol. 38, No. 1 ( 1974-01), p. 80-85
Abstract:
A masking technique was developed for visualizing nonradioactive compounds on soil thin‐layer chromatographic plates. To determine azide mobility, leached plates were sprayed with a kaolinite slurry in 95% ethanol, air‐dried, and resprayed with 2% Fe(NO 3 ) 3 in 5% HNO 3 . The average R F of azide in four mineral soils was 0.87, and in a muck 0.21; it is thus quite mobile in most soils. The form of azide (NaN 3 , KN 3 , or KN 3 + K 2 CO 3 ) did not affect mobility. 2‐Imidazolidinethione (ethylenethiourea, or ETU), a degradation product of ethylenebis (dithiocarbamate) fungicides, was evaluated after masking with kaolinite + alumina (1:2), sprayed onto soil plates in 95% ethanol. Nitroprusside and Grote's reagents were useful chromogenic reagents. Mobility was also determined by autoradiography of [ 14 C]ETU; average R F 's for four mineral soils ranged from 0.83 to 1.00, decreasing to 0.61 in a muck. Although weakly adsorbed from solution, ETU is immobilized by drying the soil before leaching. 2‐Imidazolidone (ethyleneurea) and possibly sulfur were detected in soil incubated 7 days with ETU.
Type of Medium:
Online Resource
ISSN:
0361-5995
,
1435-0661
DOI:
10.2136/sssaj1974.03615995003800010027x
Language:
English
Publisher:
Wiley
Publication Date:
1974
detail.hit.zdb_id:
241415-6
detail.hit.zdb_id:
2239747-4
detail.hit.zdb_id:
196788-5
detail.hit.zdb_id:
1481691-X
SSG:
13
SSG:
21
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