Report: TR 2016/22
Author: Pattle Delamore Partners Ltd
This report provides a literature review and recommended procedures for the use of portable X-ray fluorescence measurements of trace elements in soils; primarily during contaminated land investigations.
It is not intended to be a training manual or standard upon which all field-based XRF work should be compared to; rather it is a guide to help the reader understand the limitations and appropriate usage of the method based on current international best practice.
The advantages of portable XRF include real-time, low-cost results with minimal sample preparation; but disadvantages include low accuracy, higher detection limits, limited scope of contaminants and interference. To date, research and practice indicate that portable XRF results are semi-quantitative; and this report recommends that the method is best applied in combination with laboratory analysis to enhance decision-making for contaminated land investigations and remediation.
|2.0||The place of field portable x-ray fluorescence in contaminated site investigations||2|
|2.1||Advantages and disadvantages||2|
|2.2||Use of field portable XRF||4|
|2.3||FP-XRF sampling strategies||7|
|3.0||Elements suitable for XRF analysis||9|
|3.1||Factors which influence limits of detection||9|
|4.0||Factors affecting XRF analysis accuracy||11|
|4.1||Interferences and sources of error||11|
|5.0||XRF safety considerations||15|
|6.0||Sample analysis procedures||15|
|6.2||Quality assurance/quality control||20|
|7.0||Data analysis and interpretation||24|
|8.0||Reporting on results||25|
|Glossary - a guide to common x-ray fluorescence terms||30|