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Samples were extracted by liquid liquid extraction and analyzed with a LC MS/MS.
Organic compounds in fog samples were extracted by liquid liquid extraction and analyzed by gas chromatography coupled to mass spectrometry.
Extracts of pitaya (H. polyrhizus and H. undatus) peel were extracted by supercritical carbon dioxide extraction, and analyzed by gas chromatography mass spectrometry analysis.
The resulting pentafluorophenylthiohydantoin reaction products were extracted by use of liquid liquid extraction and analyzed by HPLC/MS/MS.
Artemisinin and selected derivatives at concentrations of 3.55 μM were incubated in RBCs with a hematocrit of 33% for 2 h at 37 °C, extracted from RBCs by solid phase extraction, and analyzed using liquid chromatography mass spectrometry in positive electro-spray ionization mode with methanol as mobile phase.
After transesterification, the free form of the diterpernes is extracted from the lipid fraction using liquid liquid extraction and analyzed using GC-FID without prior derivatization.
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Cell surface-associated proteins, which include noncovalently-bound and disulfide bridge-associated proteins, were isolated from cell wall fractions by SDS-extraction and analyzed by two-dimensional gel electrophoresis and silver staining [60], [61].
The plasma samples were extracted by solid phase extraction (SPE) and analyzed by UPLC-MS/MS for non-esterified oxylipins, acylethanolamides, N-acylglycines, and monoacylglycerols using modifications of previously described protocols [63].
All the samples were extracted using standard metabolic solvent extraction methods and analyzed through GC/MS and LS/MS as previously described [ 44].
The compounds were extracted from wastewater samples by solid-phase extraction (SPE) and analyzed by High-performance liquid chromatography coupled with tandem mass spectrometry (HPLC MS/MS).
To characterize their chemical composition, one milligram of each sample was subjected to an extraction step with toluene using an ASE 200 (Dionex Corporation, Sunnyvale, CA, USA), cleaned using silica solid phase extraction cartridges, and analyzed with gas chromatography/mass spectrometry using previously described procedures (Bergvall and Westerholm 2008; Westerholm et al. 2001).
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