SUMMARY
The application note summarizes the digestion of OREAS 239, a gold ore certified reference material using ColdBlock Digestion Technology.
| Instrument: | ColdBlock CBL Pro Series, chiller, ICP-OES & ICP-MS |
| Published: | October 2025 |
| Digestion Time: | 20 Minutes |
| Acid Used: | HNO3, HCl |
| Average ColdBlock Recovery vs. CRM: |
|
|
OREAS 239, Gold Ore |
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|
Method: |
30g – Add 90mL HNO3 + 30mL HCl and digest at 70% power for 20 minutes. Let cool, and bulk to 200mL with 20% HCl v/v |
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|
Element |
Certified Value (ppm) |
ColdBlock Result A (ppm) |
ColdBlock Result B (ppm) |
ColdBlock Result C (ppm) |
Average (ppm) |
Stdev |
% RSD |
ColdBlock % Recovery vs Certified Value |
|
Au |
3.55 |
3.55 |
3.47 |
3.57 |
3.53 |
0.05 |
1.5% |
99% |
|
Ag |
0.244 |
0.246 |
0.241 |
0.244 |
0.253 |
0.006 |
2.5% |
101% |
|
As |
708 |
709 |
721 |
775 |
735 |
35 |
4.8% |
104% |
|
Cu |
26.8 |
26.4 |
27.6 |
28.6 |
27.6 |
1.1 |
4.0% |
103% |
|
Co |
12.1 |
13.2 |
12.9 |
12.6 |
12.9 |
0.3 |
2.1% |
107% |
|
Fe |
33600 |
35819 |
35033 |
35092 |
35315 |
438 |
1.2% |
105% |
|
Mn |
220 |
222 |
218 |
225 |
222 |
3.6 |
1.6% |
101% |
|
Ni |
55 |
60 |
59 |
63 |
61 |
2.1 |
3.4% |
111% |
|
Pb |
10.9 |
10.7 |
10.8 |
10.7 |
10.7 |
0.06 |
0.5% |
98% |
|
Sb |
518 |
508 |
533 |
509 |
517 |
14.2 |
2.8% |
100% |
|
Zn |
75 |
82 |
77 |
79 |
79 |
2.3 |
2.9% |
106% |
Click here to download the Application Note in PDF format.
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ColdBlock Technologies Inc.
4551 Zimmerman Ave
Niagara Falls, ON L2E 3M5
info@coldblock.ca.
