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Evaluation of portable X-ray fluorescence (pXRF) in exploration and mining: Phase 1, control reference materials by Gwendy E.M. Hall, Graeme F. Bonham-Carter,

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Presentation on theme: "Evaluation of portable X-ray fluorescence (pXRF) in exploration and mining: Phase 1, control reference materials by Gwendy E.M. Hall, Graeme F. Bonham-Carter,"— Presentation transcript:

1 Evaluation of portable X-ray fluorescence (pXRF) in exploration and mining: Phase 1, control reference materials by Gwendy E.M. Hall, Graeme F. Bonham-Carter, and Angelina Buchar Geochemistry: Exploration, Environment, Analysis Volume 14(2):99-123 May 28, 2014 © 2014 AAG/The Geological Society of London

2 Instruments used in this study.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

3 Suite of control reference materials (CRMs) used in this study.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

4 Results of beam time optimization study for As, Ca and Cr in lake sediment LKSD-4 using the soil mode. Results of beam time optimization study for As, Ca and Cr in lake sediment LKSD-4 using the soil mode. Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

5 Results of beam time optimization study for Mn, Pb and Si in the soil GXR-6 using the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

6 Transmittance for the different thin-films, tested in the analysis of GSR-1, GSR-3, LKSD-4, OREAS 166 and SY-3, for Mg, Al and Si (mining mode). Transmittance for the different thin-films, tested in the analysis of GSR-1, GSR-3, LKSD-4, OREAS 166 and SY-3, for Mg, Al and Si (mining mode)‏ Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

7 Values of best and worst r2 and slope for the best-fit line in plots of pXRF (y-axis) versus established values across the five instruments. Values of best and worst r2 and slope for the best-fit line in plots of pXRF (y-axis) versus established values across the five instruments Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

8 Comparison of pXRF and recommended values for Al: (a) using BT-A and (b) HH-A, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

9 Comparison of pXRF and recommended values for Ca HH-C, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

10 Comparison of pXRF and recommended values for Fe using BT-A, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

11 Comparison of pXRF and recommended values for K: (a) using BT-B and (b) HH-A, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

12 Comparison of pXRF and recommended values for Mg: (a) using BT-B and (b) HH-B, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

13 Comparison of pXRF and recommended values for Mn: HH-C, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

14 Comparison of pXRF and recommended values for using Ti HH-C, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

15 Comparison of pXRF and recommended values for Cl using HH-C, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

16 Comparison of pXRF and recommended values for P using HH-A, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

17 Comparison of pXRF and recommended values for S: (a) using HH-B and (b) HH-C, in the mining mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

18 Comparison of pXRF and recommended values for As: (a) using HH-A and (b) HH-C, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

19 Results for As in ppm across the five instruments (soil mode).
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

20 Comparison of pXRF and recommended values for Cu: (a) using HH-B and (b) BT-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

21 Comparison of pXRF and recommended values for Nb using HH-A.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

22 Comparison of pXRF and recommended values for Pb: (a) using BT-B and (b) HH-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

23 Comparison of pXRF and recommended values for Rb: (a) using HH-C and (b) HH-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

24 Comparison of pXRF and recommended values for Sr using BT-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

25 Comparison of pXRF and recommended values for Y using HH-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

26 Comparison of pXRF and recommended values for Ba: (a) using BT-A, (b) BT-B, (c) HH-B and (d) HH-C, in the soil mode. Comparison of pXRF and recommended values for Ba: (a) using BT-A, (b) BT-B, (c) HH-B and (d) HH-C, in the soil mode. Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

27 Comparison of pXRF and recommended values for Mo using BT-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

28 Comparison of pXRF and recommended values for Sn using BT-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

29 Comparison of pXRF and recommended values for Zn using HH-C, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

30 Comparison of pXRF and recommended values for Zr using HH-C, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

31 Comparison of pXRF and recommended values for Cr using BT-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

32 Comparison of pXRF and recommended values for Sb using BT-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

33 Comparison of pXRF and recommended values for Se using BT-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

34 Comparison of pXRF and recommended values for Th using BT-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

35 Comparison of pXRF and recommended values for U using: (a) HH-C, and (b) HH-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

36 Results for Ag in ppm by pXRF (soil mode).
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

37 Comparison of pXRF and recommended values for Co using: (a) BT-B, and (b) HH-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

38 Comparison of pXRF and recommended values for Ni using: (a) BT-B, and (b) HH-A, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

39 Comparison of pXRF and recommended values for V using: (a) HH-C, and (b) HH-B, in the soil mode.
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

40 Plot of Ca content against Sc by pXRF using BT-B, illustrating the positive interference by Ca on Sc. Plot of Ca content against Sc by pXRF using BT-B, illustrating the positive interference by Ca on Sc. Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

41 Results for W in ppm by pXRF (soil mode).
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

42 Results for Ce in ppm by pXRF (soil mode).
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

43 Results for La in ppm by BT-A (soil mode).
Gwendy E.M. Hall et al. Geochemistry: Exploration, Environment, Analysis 2014;14:99-123 © 2014 AAG/The Geological Society of London

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