| gas chromatography-triple-quadrupole mass spectrometry for analysis of selected polyhalogenated pollutants in plants. comparison of extraction methods. | different extraction methods, followed by gas chromatography coupled to triple quadrupole mass spectrometry, were evaluated for simultaneous extraction of seven polychlorinated biphenyls (pcbs) and six polybrominated diphenyl ethers (pbdes) from common weeds. pressurized liquid extraction (ple) with in-cell clean-up, ultrasound-assisted extraction (uae) with in-column clean-up, and uae with dispersive solid-phase extraction (dspe) clean-up were evaluated and compared. in-cell clean-up with 4 g f ... | 2013 | 23070044 |