Bertil Magnusson, Research Scientist at SP Technical Research Institute of Sweden, Sweden bertil.magnusson@sp.se   

Bertil started as a marine chemist looking for traces of metals in oceans, rivers, lakes and rain in the 70's. After PhD he joined a chemical company, Eka Chemicals within AKZO-NOBEL and worked there as a specialist in analytical chemistry mainly with ICP, XRF and XRD. Products analysed were mainly zeolites, catalysts and different types of silicates. In XRF calibration the theoretical fundamental parameters were applied (α-correction including loss on ignition eliminated alfas).

In 2002 Bertil joined the SP Technical Research Institute of Sweden and is currently working with quality in measurements, Metrology in Chemistry, a research area on international comparability and traceability of chemical measurement results. A major part is teaching and writing guidelines and research papers regarding measurement quality.  Important part of his work is education for analytical laboratories in QA/QC. In Nordic cooperation he has written a handbook on Measurement Uncertainty for Environmental laboratories, Nordtest tecn report 537, and a Handbook for Internal Quality Control for Environmental Laboratories, report 569 and in European cooperation he is active in Eurachem (chair from 2012-2014) and Eurolab. Bertil is also working with primary measurement using Isotope-Dilution ICP-MS, XRF and electrical conductivity (of solutions). In primary measurement using XRF for silicates a fusion is applied of pure oxides and carbonates.In Sweden he organises the XRF user meeting biennially since 2003.

 

He will present the following paper:

Direct measurement with XRF – sampling but no sample preparation

XRF can be regarded as a non-destructive technique but in most cases in order to get more reliable results with a lower measurement uncertainty a sample preparation step is performed for solid samples. The preparation can e.g. be homogenizing and subsequent briquetting or fusion into a bead.

Analysis can also be performed directly on many samples with the drawback of higher measurement uncertainty but with additional benefits such as less sample handling, better spatial resolution, lower response time, higher sample throughput.

In this lecture an overview of direct XRF measurement will be presented using standard wavelength dispersive and energy dispersive instruments as well as handheld instruments and details of three examples will be given

  • Analysis of deposits on nuclear fuel rods – sampling on a filter paper
  • Determination of thickness of Cu coating on welding wire – direct measurement
  • Analysis of sediment and wood cores – XRF footprint along the core

 

 

Julian Tolchard, NTNU, Norway, julian.tolchard@material.ntnu.no

Julian completed his PhD at the University of St. Andrews, UK in 2001, studying the structure and electrochemistry of Lithium Titanates as intercalation electrodes for lithium ion batteries. Following this he spent 4 years at the University of Surrey investigating lanthanum silicate oxide ion conductors using a combination of atomistic modelling, EXAFS, X-ray and neutron diffraction techniques. In 2005 he moved to NTNU to study cation diffusion and materials compatibility in high temperature Solid Oxide Fuel Cell (SOFC) materials.

Since 2009 Julian has been responsible for the day to day running of the Powder Diffraction Laboratory at the Institute of Materials at NTNU, maintaining and developing the laboratory and training users in modern data collection and analysis methods.

 

He will present the following paper:

RECX – A new Norwegian National Centre for X-ray Scattering and Imaging.

RECX is a new national centre for X-ray diffraction, scattering and imaging which brings together laboratories from the Dept of Chemistry at the University of Oslo and the Natural Sciences faculty at NTNU. Jointly funded by Forskningsrådet, NTNU and UiO it is to be a highly equipped national resource which combines and coordinates laboratories and expertise from NTNU and UiO with the goal of providing long term development of skills and methodology in the fields of X-ray scattering and  imaging. Importantly, its status as a national centre ensures full access for all areas of the Norwegian X-ray user community, the intention being that it function as a hub, serving and bringing together users from across research, education, public and private sectors.

This presentation will provide an introduction to RECX, giving an overview of the structure and capabilities of the centre, presenting the key people and detailing how to gain access and make use of its facilities. By way of an introduction to our capabilities, some of the recent high temperature diffraction work from the NTNU powder diffraction lab will be presented in the form of “case studies”. These will include both academically and industrially interesting samples, ranging from catalyst nano-materials to metals and electroceramics.

 

 

Laura Oelofsen, Global XRF Specialist, Rigaku USA, Laura.Oelofse@rigaku.com

 

Laura holds a ND – Analytical Chemistry, NHD Chemistry and M.Tech degree from Witwatersrand Technikon ( now University of Johannesburg) as well as a BA in Business Administration.

She has worked for ERGO ( East Rand Gold and Uranium), Rossing Uranium ( Namibia), University of the Witwatersrand ( Geology Dept) and Gencor ( now BHP Billiton) over the span of 20 years.  

Mainly she worked on XRF and also had extensive exposure to ICP, AA and other spectroscopic techniques as well as classical Wet Chemistry.

Five years ago, Laura became an independent consultant in South Africa working at Novanserv , sold equipment for Sievers, Baird and Jordan Valley as an agent. She Immigrated to the USA to join Jordan Valley AR Inc. and worked in their EDXRF business from 1997 – 2009 where she served as VP – Sales and Marketing. She launched Xenemeterix - the company formed out of Jordan Valley AR inc.- Then she joined Rigaku as Product Marketing Manager for XRF in the USA in March 2009, and now has a role in the Rigaku Global Marketing Group as the XRF Specialist working in business development and Sales and Marketing support.

Laura has more than 30 years of experience in XRF and related spectroscopic techniques. A large part of her career was actually doing XRF analysis. 

 

She will present the following paper:

FUSIONS – HOW TO IMPROVE  THROUGHPUT AND CONCENTRATION RANGE OF ANALYSIS BY ELIMINATING THE LOSS ON IGNITION PROCESS STEP, USING DIFFERENT DILUTION RATIOS AND MAINTAINING  ACCURACY AND PRECISION of RESULTS

The use of fusions for XRF in industrial process monitoring is common practice and there are several time consuming steps to complete in order to render a sample fusion ready.

This paper details a method that would eliminate the need to carry out the Loss on Ignition, Gain on Ignition step thus eliminating 2 hours from the preparation time and it also details the ability to use different dilution ratios of sample and flux for materials on the same calibration curve in order to increase the scope of materials that can be included in a universal calibration curve using both naturally sourced certified reference materials and synthetic pure chemicals as calibration standards