{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/44240"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/44240","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"A comparison of extraction techniques for the determination of metals in soil","abstract":"A growing issue in groundwater studies concerns the distinction between anthropological and geological metal contaminants in soil. Current extraction methods, such as hot acid extraction, result in the digestion of the sample matrix which may obscure the origin of the contaminant. Since metals from anthropological sources are most often adsorbed to the surface of the soil sediment, the dissolution of the geological matrix is not necessary to release the contaminat metals. The resolution to this problem may lie in the use of chelating agents, where the adsorbed metals can be removed from the sediments without disrupting the geological matrix. This would allow the surface bound metal contaminants to be differentiated from the geological metals which are a natural part of the soil's composition. The basis of this study is a comparison of a hot acid extraction method vs. a chelation extraction method for the determination of metals in soils. Statistical comparisons on the precision and accuracy of the these methods on a reference soil, salt amended soil, and sewage sludge amended soil is discussed.","abstract_html":"A growing issue in groundwater studies concerns the distinction between anthropological and geological metal contaminants in soil. Current extraction methods, such as hot acid extraction, result in the digestion of the sample matrix which may obscure the origin of the contaminant. Since metals from anthropological sources are most often adsorbed to the surface of the soil sediment, the dissolution of the geological matrix is not necessary to release the contaminat metals. The resolution to this problem may lie in the use of chelating agents, where the adsorbed metals can be removed from the sediments without disrupting the geological matrix. This would allow the surface bound metal contaminants to be differentiated from the geological metals which are a natural part of the soil's composition. The basis of this study is a comparison of a hot acid extraction method vs. a chelation extraction method for the determination of metals in soils. Statistical comparisons on the precision and accuracy of the these methods on a reference soil, salt amended soil, and sewage sludge amended soil is discussed.","abstract_has_math":false,"creators":["Burcham, Shannon Tomoe"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Chemistry","degree_department":"Chemistry","school":null,"contributors":[],"advisors":[],"committee_chairs":["Long, Gary L."],"committee_members":["Anderson, Mark R.","Dietrich, Andrea M."],"year":1995,"date_issued":"1995-08-05","date_published":"1995-08-05","updated_at":"2026-07-22T22:18:58Z","subjects":["soils","chelation","DTPA"],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-08142009-040540"],"render_values":[{"text":"etd-08142009-040540","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/44240","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Long, Gary L."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Anderson, Mark R.","Dietrich, Andrea M."]},{"key":"dc:contributor.department","label":"Department","values":["Chemistry"]},{"key":"dc:creator","label":"Author","values":["Burcham, Shannon Tomoe"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-03-14T21:42:49Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-03-14T21:42:49Z","2009-08-14"]},{"key":"dc:date.issued","label":"Date","values":["1995-08-05"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["soils","chelation","DTPA"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-08142009-040540"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/44240"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A growing issue in groundwater studies concerns the distinction between anthropological and geological metal contaminants in soil. Current extraction methods, such as hot acid extraction, result in the digestion of the sample matrix which may obscure the origin of the contaminant. Since metals from anthropological sources are most often adsorbed to the surface of the soil sediment, the dissolution of the geological matrix is not necessary to release the contaminat metals. The resolution to this problem may lie in the use of chelating agents, where the adsorbed metals can be removed from the sediments without disrupting the geological matrix. This would allow the surface bound metal contaminants to be differentiated from the geological metals which are a natural part of the soil's composition. The basis of this study is a comparison of a hot acid extraction method vs. a chelation extraction method for the determination of metals in soils. Statistical comparisons on the precision and accuracy of the these methods on a reference soil, salt amended soil, and sewage sludge amended soil is discussed."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["BTD"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A comparison of extraction techniques for the determination of metals in soil"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Long, Gary L."],"dc:contributor.committeemember":["Anderson, Mark R.","Dietrich, Andrea M."],"dc:contributor.department":["Chemistry"],"dc:creator":["Burcham, Shannon Tomoe"],"dc:date.accessioned":["2014-03-14T21:42:49Z"],"dc:date.available":["2014-03-14T21:42:49Z","2009-08-14"],"dc:date.issued":["1995-08-05"],"dc:description.abstract":["A growing issue in groundwater studies concerns the distinction between anthropological and geological metal contaminants in soil. 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