The actual amount of RDX in the rodent chow was measured using pressurized liquid extraction followed by gas chromatography with electron-capture detection (Pan et al. 2005).
The recoveries of the OPAHs spiked onto glass fiber filters using two different pressurized liquid extraction (PLE) methods were in the ranges of 84 107 and 67 110 %, respectively.
The ethanolic extract was obtained from deflavored turmeric using pressurized liquid extraction (PLE).
Total lipids were extracted from oleaginous yeast (Rhodotorula glutinis) using pressurized liquid extraction (PLE).
Two methods were optimized to obtain sterol enriched extracts from A. bisporus fruiting bodies using pressurized liquid extraction (PLE) and supercritical fluid extraction (SFE).
Briefly, the PM2.5 sample filters were spiked with perdeuterated surrogate standards (d10-fluorene, d10-phenanthrene, d10-pyrene, d12-triphenylene, d12-benzo[ a]pyrene, and d12-benzo[ g, h, i]perylene) and extracted twice with dichloromethane (Optima Fisher Scientificc, Hampton, NH, USA) using pressurized liquid extraction (ASE 300; Dionex Corp., Sunnyvale, CA, USA) (Primbs et al. 2008a).
The extract was separated from the wooden layer between of walnut seed using pressurized hot water extraction (PHWE), pressurized liquid extraction (PLE), and perculation methods A central composite design was used to optimize the effective extraction variables.
The process involved the following steps:(1) supercritical fluid extraction (SFE) using supercritical carbon dioxide (ScCO2); (2) gas expanded liquids (GXL) using 75% ethanol and 25% ScCO2 (v/v) and; (3) pressurized liquid extraction (PLE) using water.
Finally, the technique was compared to traditional techniques (Soxhlet, sonication), and the more recent pressurized liquid extraction technique.
The method combines pressurized liquid extraction and ultra high performance liquid chromatography tandem mass spectrometry.
