Investigation of the role of the production process on the luminescence of sea salt products
Publié en ligne: 01 juin 2017
Pages: 121 - 128
Reçu: 16 mai 2016
Accepté: 19 janv. 2017
© 2016 P. G. Hunter and N. A. Spooner
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Figure 1
Diamond Salt — First Glow. (5 Gy dose, heating rate 5 K/s). Left — Hunter et al., 2012 Right — present studyFigure 2
First Glow: Diamond salt. Luminescence Intensity vs Photon Energy and Temperature. (5 Gy dose, heating rate 5 K/s).Figure 3
Second Glow: Diamond salt. Luminescence Intensity vs Photon Energy and Temperature. (5 Gy dose, heating rate 5 K/s).Figure 4
Salt Survey. Luminescence Intensity vs Photon Energy and Temperature. (5 Gy dose, heating rate 5 K/s).Figure 5
Cheetham Salt Intensity (cts/Gy(mn).j.geochr-2015-0055.tab.006.w2aab2b8d296b1b7b1ab2b2ab5Aa
ELEMENTS | Ta | Tb | Te | Th | Ti | TI | Tm | u | V | w | Y | Yb | Zn | Zr |
---|
UNITS | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm |
DETECTION | 0.01 | 0.005 | 0.1 | 0.01 | 5 | 0.02 | 0.01 | 0.01 | 1 | 0.1 | 0.05 | 0.01 | 1 | 0.5 |
Saxa | X | X | X | X | X | X | X | 0.02 | X | 0.7 | X | X | X | 1.8 |
Coles | 0.08 | X | X | 0.09 | X | 0.02 | X | 0.03 | X | 0.8 | X | X | X | 4.5 |
Diamond | X | X | X | X | X | X | X | X | X | 0.7 | X | X | X | 2.9 |
j.geochr-2015-0055.tab.005.w2aab2b8d296b1b7b1ab2b2ab4Aa
ELEMENTS | Nb | Nd | Ni | P | Pb | Pr | Rb | Re | s | Sb | Sc | Se | Sm | Sn | Sr |
---|
UNITS | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm |
DETECTION | 0.05 | 0.01 | 1 | 50 | 2 | 0.005 | 0.05 | 0.01 | 50 | 0.05 | 1 | 1 | 0.01 | 0.1 | 0.05 |
Saxa | 0.06 | X | 3 | X | 5 | X | 0.07 | X | 396 | 0.4 | X | X | X | 0.5 | 25.79 |
Coles | 0.06 | 0.26 | 3 | X | 5 | 0.069 | 0.62 | X | 412 | 0.67 | X | X | 0.02 | 0.5 | 24.71 |
Diamond | X | X | 5 | X | 3 | X | 0.07 | X | 193 | 0.41 | X | X | X | 0.3 | 14.43 |
Sensitization from 135°C preheat of feedstock. Light sum (200–400°C) for 590 nm emissions.
Aliquot | No preheat | 135°C Preheat |
---|
590 nm intensity (cts/Gy(mn)) | 590 nm intensity (cts/Gy(mn)) |
---|
1 | 926317 | 951361 |
2 | 878076 | 986328 |
3 | 803156 | 961460 |
4 | 810834 | 873617 |
5 | 839149 | 923463 |
6 | 727036 | 820335 |
Mean | 851507 | 939246 |
Std Dev (%) | ±6 | ±5 |
Sensitivity change (%) | | +10 |
j.geochr-2015-0055.tab.003.w2aab2b8d296b1b7b1ab2b2ab2Aa
ELEMENTS | Ag | Al | As | Ba | Be | Bi | Ca | Cd | Ce | Co | Cr | Cs | Cu | Dy | Er |
---|
UNITS | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm |
DETECTION | 0.1 | 50 | 0.5 | 0.1 | 0.1 | 0.01 | 50 | 0.05 | 0.01 | 0.1 | 5 | 0.05 | 1 | 0.01 | 0.01 |
Saxa | X | X | X | 0.2 | X | 0.01 | 441 | X | X | X | X | X | 6 | X | X |
Coles | 0.1 | 326 | 1 | 1 | X | 0.05 | 412 | X | 0.62 | 0.2 | X | X | 3 | 0.01 | X |
Diamond | X | X | X | 0.2 | X | X | 206 | X | 0.44 | 0.1 | 9 | X | 1 | X | X |
Interaliquot variance of feedstock salt. Light sum (200–400°C) for 590 nm and 360 nm emissions.
Aliquot | 590 nm Intensity (cts/Gy(mn)) | 360 nm Intensity (cts/Gy(mn)) |
---|
| 926317 | 495377 |
2 | 878076 | 499533 |
3 | 803157 | 469752 |
4 | 810835 | 558538 |
5 | 839150 | 490098 |
Mean | 851507 | 500301 |
Variance | 51105 | 33263 |
Variance (% of mean) | 6.0 | 6.6 |
j.geochr-2015-0055.tab.004.w2aab2b8d296b1b7b1ab2b2ab3Aa
ELEMENTS | Eu | Fe | Ga | Gd | Ge | Hf | Ho | In | K | La | Lu | Mg | Mn | Mo | Na |
---|
UNITS | ppm | % | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm | ppm |
DETECTION | 0.01 | 0.01 | 0.05 | 0.01 | 0.1 | 0.05 | 0.01 | 0.01 | 20 | 0.01 | 0.005 | 20 | 1 | 0.1 | 20 |
Saxa | X | X | X | X | X | X | X | X | 86 | X | 0.009 | 67 | X | 0.2 | 363527 |
Coles | X | X | 0.11 | 0.03 | X | X | X | 0.02 | 249 | 0.32 | X | 68 | X | 0.3 | 361339 |
Diamond | X | X | X | X | X | X | X | X | 155 | X | X | 56 | X | 0.4 | 363122 |