{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/86105"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/86105","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A Real -Time Core Extraction System for Soil Nitrates","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.","abstract_html":"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.","abstract_has_math":false,"creators":["Price, Randy Ross"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Agricultural Engineering","degree_department":null,"school":null,"contributors":["Hummel, John W."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T14:54:00Z","date_published":"2015-09-28T14:54:00Z","updated_at":"2026-07-22T22:26:26Z","subjects":["Chemistry, Analytical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9971165"],"render_values":[{"text":"(MiAaPQ)AAI9971165","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/86105","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hummel, John W."]},{"key":"dc:creator","label":"Author","values":["Price, Randy Ross"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-28T14:54:00Z","10000-01-01","2000"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agricultural Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Analytical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/86105","(MiAaPQ)AAI9971165"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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.","Made available in DSpace on 2015-09-28T14:54:00Z (GMT). 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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.","Made available in DSpace on 2015-09-28T14:54:00Z (GMT). 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