We've updated our Privacy Policy to make it clearer how we use your personal data. We use cookies to provide you with a better experience. You can read our Cookie Policy here.

Advertisement
A picture of Greg McMahon, PhD

Greg McMahon, PhD profile page

Principle Scientist


Greg is a principal research scientist at the National Physical Laboratory, where he focuses on dynamic secondary mass spectrometry (SIMS), nanoSIMS and other high spatial microanalytical methods.


Education


University of Saarland  

Queen's University  


Areas of Expertise



Got a Question for Greg McMahon, PhD?


Get in touch using the contact form linked here and we'll get back to you shortly.



Published Content
Total: 5
A small mite analyzed by electron microscopy.
Article

Electron Microscopy Techniques, Strengths, Limitations and Applications

Electron microscopy has harnessed the power of physics to allow us to see beyond the limits imposed by visible light. In this article, we explore how electron microscopy works, some of the common techniques and applications and ways the field continues to push the boundaries.
Small vial on paper with chemical formulations.
Article

How a Mass Spectrometer Works, Types of Instrumentation and Interpreting Mass Spectral Data

In this article, we take a look at the fundamentals of mass spectrometry, how it works, variations that can be used at each stage of the process and how they can be combined to suit different sample types or analytical questions.
The movement of electrons around an atomic nucleus in bright blue.
Article

Mass Spectrometry Ionization

Mass spectrometry (MS) plays a vital role in many aspects of our lives, from diagnosing illness and detecting food contaminants to fighting fraud. In order for a sample to be analyzed by MS, it must however, first be ionized. There are a number of ways of achieving sample ionization depending on the sample type, target analyte and desired workflow. In this article, we consider some common ionization techniques and sample types for which they are best suited.
Mass spectrometry analyzers.
Article

Mass Analyzers for Mass Spectrometry

At the heart of any mass spectrometer is the mass analyzer. This component takes the ionized masses and separates them based on their mass-to-charge ratio (m/z). In this article, we consider some of the common types of mass analyzers, their advantages and disadvantages.
Flame illustration
Article

ICP-MS — ICP-MS Instrumentation, ICP-MS Analysis, Strengths and Limitations

Inductively coupled plasma mass spectrometry (ICP-MS) is a flexible chemical analysis method that can be tailored to meet the demands of a wide variety of industries.
Advertisement