{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T06:01:09Z","timestamp":1777442469066,"version":"3.51.4"},"reference-count":24,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2006,8,1]],"date-time":"2006-08-01T00:00:00Z","timestamp":1154390400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Appl Spectrosc"],"published-print":{"date-parts":[[2006,8]]},"abstract":"<jats:p>\n                    On-line Fourier transform infrared (FT-IR) spectroscopy was applied to monitor the concentration of halogenated volatile organic compounds in a sample-preparation process that simulates long-term, slow accumulation of contaminants in soils (i.e., aging). Artificial aging is conducted by circulating a supercritical fluid solution containing the contaminant(s) of interest through a packed soil column. Mid-infrared spectra of several volatile halocarbons were measured in supercritical Xe and CO\n                    <jats:sub>2<\/jats:sub>\n                    to evaluate possible interferences from the strong absorption of CO\n                    <jats:sub>2<\/jats:sub>\n                    . Although some of the C\u2013X bands were partially masked in supercritical CO\n                    <jats:sub>2<\/jats:sub>\n                    , all of the compounds studied had distinct spectral features in the region 1400\u2013700 cm\n                    <jats:sup>\u22121<\/jats:sup>\n                    and could be monitored in either solvent. Quantitative measurements of halogenated volatile organics in supercritical CO\n                    <jats:sub>2<\/jats:sub>\n                    were demonstrated with CCl\n                    <jats:sub>4<\/jats:sub>\n                    . Excellent results were obtained over the range 7\u2013280 mM. Representative artificial aging experiments were conducted on two test soils using CCl\n                    <jats:sub>4<\/jats:sub>\n                    as the contaminant. On-line (FT-IR) estimates of the aged soil concentrations were 1.3\u20134.4 times higher than off-line concentrations obtained by gas chromatography\/mass spectrometry. The discrepancies were primarily ascribed to post-aging losses that occurred during depressurization and subsequent sample handling. FT-IR spectroscopy is shown to be a powerful tool for monitoring soil loading behavior and for developing artificial aging protocols.\n                  <\/jats:p>","DOI":"10.1366\/000370206778062156","type":"journal-article","created":{"date-parts":[[2006,8,13]],"date-time":"2006-08-13T20:06:04Z","timestamp":1155499564000},"page":"914-919","source":"Crossref","is-referenced-by-count":4,"title":["Quantification of Volatile Organics in Soil Aging Experiments Using Fourier Transform Infrared Spectroscopy"],"prefix":"10.1177","volume":"60","author":[{"given":"Christopher J.","family":"Thompson","sequence":"first","affiliation":[{"name":"Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert G.","family":"Riley","sequence":"additional","affiliation":[{"name":"Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James E.","family":"Amonette","sequence":"additional","affiliation":[{"name":"Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul L.","family":"Gassman","sequence":"additional","affiliation":[{"name":"Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2006,8,1]]},"reference":[{"key":"bibr1-000370206778062156","doi-asserted-by":"publisher","DOI":"10.1021\/es00011a003"},{"key":"bibr2-000370206778062156","doi-asserted-by":"publisher","DOI":"10.1021\/es00002a033"},{"key":"bibr3-000370206778062156","doi-asserted-by":"publisher","DOI":"10.1021\/es940683g"},{"key":"bibr4-000370206778062156","doi-asserted-by":"publisher","DOI":"10.1021\/es970512m"},{"key":"bibr5-000370206778062156","unstructured":"Lee M. L. and Markides K. E, Analytical Supercritical Fluid Chromatography and Extraction (Chromatography Conferences, Inc., Provo, UT, 1990), pp. 12, 13."},{"key":"bibr6-000370206778062156","unstructured":"Taylor L. 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G., Chemometrics Data Analysis for the Laboratory and Chemical Plant (John Wiley and Sons, New York, 2003), Chap. 5, pp. 284\u2013297.","DOI":"10.1002\/0470863242"},{"key":"bibr20-000370206778062156","volume-title":"Hanford Site Groundwater Monitoring for Fiscal Year 2005, PNNL-15670","author":"Hartman M. J.","year":"2006"},{"key":"bibr21-000370206778062156","unstructured":"Herzberg G., Molecular Spectra and Molecular Structure (D. 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