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Title:A Real -Time Core Extraction System for Soil Nitrates
Author(s):Price, Randy Ross
Doctoral Committee Chair(s):Hummel, John W.
Department / Program:Agricultural Engineering
Discipline:Agricultural Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Chemistry, Analytical
Abstract:Many methods exist to predict nitrates, but few have been applied in the field because a real-time extraction system is not available. For this reason, an intact core extraction procedure was tested that might be used in the field for the prediction of soil nitrates. This system used an intact core analysis, where an extracting solution was pushed through a soil core held between two filters, and an ion selective field effect transistor (ISFET) was used to sense soil nitrates in real time. Results of the test indicate that nitrate extraction and washout occurred in the soil cores, and that peak, slope, and cumulative area parameters fitted to the nitrate extraction curve indicate prediction in several seconds.
Issue Date:2000
Description:198 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000.
Other Identifier(s):(MiAaPQ)AAI9971165
Date Available in IDEALS:2015-09-28
Date Deposited:2000

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