Supercritical Fluid versus Soxhlet Extraction with FTIR or GC Detection of Tributyl Phosphate and Lard Oil from Sediments: Recoveries

Autor:	Deborah S. Sklarew, Bob W. Wright, Richard N. Lee, Robert G. Riley, Richard M. Ozanich, James E. Amonette
Rok vydání:	1995
Předmět:	chemistry.chemical_compound Chromatography Chemistry Extraction (chemistry) Supercritical fluid extraction Sediment Tributyl phosphate General Medicine Gas chromatography Fourier transform infrared spectroscopy Soil contamination Supercritical fluid Analytical Chemistry
Zdroj:	Journal of Chromatographic Science. 33:622-630
ISSN:	1945-239X 0021-9665
DOI:	10.1093/chromsci/33.11.622
Popis:	Supercritical fluid extraction (SFE) is compared with Soxhlet extraction and Fourier-transform infrared spectrometry (FTIR) is compared with gas chromatography (GC) for the characterization of tributyl phosphate and lard oil in spiked sediments. These compounds are of interest because they can affect the subsurface fate of carbon tetrachloride, a substance with which they were codisposed in the soil in large quantities at a U.S. Department of Energy site. One commercial SFE system is about 45% as efficient as Soxhlet extraction in recovering TBP and lard oil from sediments. Relative efficiency is increased to about 70% by using a modified collection device. These relatively poor recoveries may be caused by poor collection efficiency in the SFE rather than by differences in extraction efficiency between Soxhlet and SFE. FTIR gives comparable results to GC as a detection device for TBP and is more feasible for lard oil. The combination of SFE and FTIR could be a useful field screening technique for TBP and lard oil.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b84464f1948b57b7616a5db5a8f461d https://doi.org/10.1093/chromsci/33.11.622 Zobrazit plný text záznamu