solutions for your environment PATTLE DELAMORE PARTNERS LTD
©PDP 3 May 2023
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
The Use and Limitations of Field Portable XRF for Contaminated
Site Techniques.Andrew Rumsby and Graeme ProffittPattle Delamore Partners LtdAuckland
WasteMINZ Conference 2015Rotorua
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Ideal Samples
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P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Results from Unprepared Samples
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Results for Unprepared Samples
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Types of Samples to be Avoided
• Samples which a high percentage of gravels in them (need to be sieved)
• Very wet samples should be avoided
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Indicative Detection Limits of FP-XRF (using 60 seconds per filter)
ElementHuman health
or environmental
concern?
Typical FP-XRF detection limit
(mg/kg)Ease of comparison to guidelines/standards
Antimony, (Sb) Yes 20
Questionable depending on guideline adopted for rural lifestyle/residential (10%
produce ingestion), laboratory validation testing
recommended.
Arsenic, (As) Yes 7
Questionable for rural lifestyle /residential (10%
produce ingestion), laboratory validation testing
recommended.
Cadmium, (Cd) Yes 12
Not valid for rural lifestyle/residential (10%
produce ingestion) investigations. Valid for high density residential land-use,
commercial/industrial
Copper, (Cu) Yes 15 Usually valid
Lead, (Pb) Yes 8 Usually valid
Zinc, (Zn) Yes 12 Usually valid
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Some Elements which XRF are not so good for Human Health Investigations
(Residential)
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Cadmium Interference
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Case Study• 1.5 ha rural site• Used for organically growing
flowers• Owner says no pesticides use on
land• Preliminary testing indicates
elevated As and Pb concentrations• 45 houses will be developed on-
site.• CLMG#5 says 25 samples should
be collected
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Insert Title – In Slide Figure
Case Study
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Take Home Points
• XRF is a good tool for some elements• Prepared samples results give good agreement with
lab samples results• Unprepared samples may not meet the 0.9 r2 criteria• But by understand the limits of uncertainty in XRF data
you can target lab analysis to samples which need it.
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Acknowledgments
PDP would like to thank Graham Corban of Hill Labs for the kind permission to use data from his
study into the “Effects of Sample Preparation on the Accuracy of
Total Recoverable Heavy Metals”
P A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environmentP A T T L E D E L A M O R E P A R T N E R S L T D solutions for your environment
Questions?
solutions for your environment PATTLE DELAMORE PARTNERS LTD
©PDP 3 May 2023
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