U isotope ratio measurements of 9073-01-B and CRM U010 single U particles were accomplished at the ETH Zurich with a double-focusing high-resolution sector field MC-ICPMS ('Nu Plasma HR', Nu Instruments Limited, Wrexham, UK).
Three different GC MS systems [GC MS (single quadrupole), GC MS/MS (triple quadrupole) and GC HRMS (high resolution, magnetic sector)] using the same separation conditions were compared for the analysis of MCS of 3R4F Kentucky reference cigarettes generated under ISO and intense smoking regimes.
PCDD/PCDF and PCB measurements were performed by gas chromatography coupled to high-resolution mass spectrometry using an HP-5890 gas chromatograph (Hewlett Packard, Palo Alto, CA, USA) coupled to a JMS 700D or a JMS 800D double electromagnetic sector high resolution mass spectrometer (Jeol, Tokyo, Japan).
GC MS systems with three different mass analysers were compared: low resolution with a single quadrupole (GC MS), low resolution with triple quadrupole (GC MS/MS) and high resolution with double-focussing magnetic sector (GC HRMS).
We analyzed lead concentrations using the same protocols delineated for previous analyses of lead in calcium supplements (Scelfo and Flegal 2000), with a Finnegan MAT Element high-resolution magnetic sector inductively coupled plasma mass spectrometer (HR-ICPMS) (Thermo Electron Corporation, Waltham, MA).
Comprehensive GC/MS analyses were performed on a high-resolution magnetic sector mass spectrometer (Autospec; Waters, Inc., Milford, MA, USA) equipped with an Agilent model 6890 gas chromatograph (Agilent, Santa Clara, CA, USA) and operated at an accelerating voltage of 8 kV and source temperature of 200°C, in both low-resolution (1,000) and high-resolution (10,000) modes.
In addition, we observed many conversion events unassociated with crossovers; Figure 7 shows at low and high resolution a 0 4 conversion event in which both sectors have gained YJM789 SNPs and lost W303a SNPs.
High resolution mass spectrometry was recorded using a VG70-250S double focusing magnetic sector mass spectrometer.
2D composition depth profiling with high resolution for arrays of III V trenches has been studied using magnetic sector secondary ion mass spectrometry.
NIN is very high resolution, detailed noise.
