SEC ICP MS and CZE ICP MS investigation of medium and high molecular weight complexes formed by cadmium ions with phytochelatins

SEC ICP MS and CZE ICP MS investigation of medium and high molecular weight complexes formed by cadmium ions with phytochelatins

Size-exclusion chromatography (SEC) and capillary zone electrophoresis (CZE) coupled with inductively coupled plasma mass spectrometry were applied to characterize low, medium, and high molecular weight cadmium complexes with glutathione and phytochelatins (PCs). The dominant stoichiometry of the complexes formed in vitro was established as 1:1 using electrospray ionization mass spectrometry. C...

Metal Profiling of Human Serum Using SEC-ICP-MS

Nickel Isotope Investigation by Mc-icp-ms and Ptims

Introduction: The evidence for the presence of short-lived Fe (decaying into Ni, with the half life of 1.5 Ma) in the early system has recently received considerable attention, both experimentally and theoretically. Evidence for Ni excesses in eucrites, without correlation to Fe/Ni has been obtained by Shukolyukov and Lugmair [1, 2]. Recently, based on ion microprobe studies of phases with very...

Agilent 8800 Triple Quadrupole ICP-MS: Understanding oxygen reaction mode in ICP-MS/MS

The use of oxygen as a reaction gas for the removal of interferences in quadrupole ICP-MS is well established. However, prior to the development of the Agilent 8800 Triple Quadrupole ICP-MS (ICP-QQQ), the use of oxygen had been limited to determination of a small number of analytes in simple, well defined matrices. This is because oxygen can react with matrix components, analytes and polyatomic...

Developments in ICP-MS: electrochemically modulated liquid chromatography for the clean-up of ICP-MS blanks and reduction of matrix effects by flow injection ICP-MS

v Chapter 1. General Introduction 1 Historical Perspectives 1 Fundamental Aspects of ICP-MS 2 ICP-MS Instrumentation 3 Blank Purity in ICP-MS 4 Previous EMLC Experiments 6 Matrix Effects in ICP-MS 7 Flow Injection in ICP-MS 9 Shielded Torch in ICP-MS 10 Dissertation Objectives and Organization 11 Figures 12 References 27 Chapter 2. Electrochemically-Modulated Liquid Chromatography for Cleaning ...