The quest for higher peak focused intensities and better temporal contrast drives one to improve the design of all possible stages of the chirped pulse amplification (CPA) system.
The procedure for extracting the deconjugated parabens from the urine involved concurrent online SPE-HPLC operation with peak focusing.
Seeding other peak foci in the cerebellar maps, for instance the secondary foci in lobule VIII from the MOT seed, would presumably produce comparable results.
The parabens were preconcentrated by online solid-phase extraction, separated from other urine components by reversed-phase high-performance liquid chromatography, and detected by atmospheric pressure chemical ionization isotope dilution/tandem mass spectrometry with peak focusing (Ye et al. 2006b).
Total (free and conjugated) urinary concentrations of BPA were obtained using online, solid-phase extraction coupled with high-performance liquid chromatography isotope dilution tandem mass spectrometry with peak focusing, as described previously (Galloway et al. 2010).
The centre of ROIs are drawn for the peak foci from equivalent contrasts in a separate group of younger subjects without Parkinson's disease (Rowe et al., 2008) or an independent contrast in the current dataset.
Total (free and conjugated) urinary concentrations of BPA were measured using online solid-phase extraction coupled with high-performance liquid chromatography isotope dilution tandem mass spectrometry with peak focusing (Ye et al. 2005).
Secondly, Fig. S 3 in the Electronic supplementary material shows that applying various voltages, each NCs peak (focused NCs vs. CZE peak for NCs) responses differently in terms of peaks shape, which additionally confirms the occurrence of double mechanisms, on the single electrophoretic run.
We measured the free and total urinary concentrations of BPA, TCS, BP-3, MePB, and PrPB using online solid-phase extraction coupled to high-performance liquid chromatography (HPLC)–isotope dilution tandem mass spectrometry with peak focusing as described before (Ye et al. 2005, 2006b).
We measured the total urinary concentrations (free plus conjugated species) of BPA and tOP using online solid-phase extraction (SPE) coupled to high-performance liquid chromatography (HPLC)–isotope dilution tandem mass spectrometry (MS/MS) with peak focusing as described before (Ye et al. 2005).
