SUMMARY
The application note summarizes the digestion of AMIS 0571, a Gold Ore Certified Reference Material from the Greenstone Belt using ColdBlock Digestion Pro Series Technology.
| Instrument: | ColdBlock CBM sample digester, chiller, HF compatible liners, ICP-MS & ICP-OES |
| Published: | January 2023 |
| Digestion Time: | 30 Minutes |
| Acid Used: | Aqua Regia, HF & H3BO3 |
| Average ColdBlock Recovery vs. CRM: |
|
AMIS 0571 after bulk-up
Greenstone, South Africa. Greenstone belts are zones of variably metamorphosed mafic to ultramafic volcanic sequences with associate sedimentary rocks that occur within Archaean and Proterozoic cratons between granite and gneiss bodies. Greenstone belts are primarily formed of volcanic rocks, dominated by basalt, with minor sedimentary rocks inter- leaving the volcanic formations. The material comes from the Greenstone belt in Barberton.
amis.co.za
AMIS0571; Gold Ore, Greenstone belt; AMIS matrix Reference Materials; A Division of Torre Analytical Services; Gauteng, South Africa
|
AMIS 0571 – Gold Ore – Greenstone Belt |
||||||||||
|
Method: |
.25g |
20mL Aqua Regia + 3 mL HF digested at 80% for 20 minutes, add 20mL of 4% Boric Acid – and digest again at 80% for another 10 minutes |
||||||||
|
Element |
AMIS Certified 4-acid Value (ppm) |
95% Confidence Limits |
Sample A |
Sample B |
Sample C |
Average (ppm) |
Stdev |
% RSD |
% Recovery vs 4-acid value |
|
|
Low |
High |
|||||||||
|
Al |
52800 |
47900 |
57700 |
53443 |
52848 |
53111 |
53134 |
243.38 |
0.46% |
101% |
|
As |
318 |
268 |
368 |
317 |
307 |
315 |
313 |
4.53 |
1.45% |
98% |
|
Ba |
94 |
88 |
100 |
99 |
99 |
100 |
99 |
0.73 |
0.73% |
106% |
|
Be |
1 |
0.6 |
1.4 |
1 |
1 |
1 |
1 |
0.05 |
4.42% |
107% |
|
Bi |
0.5 |
0.4 |
0.6 |
0.6 |
0.6 |
0.6 |
0.6 |
0.02 |
3.35% |
123% |
|
Ca |
47400 |
44000 |
50800 |
48063 |
46531 |
47994 |
47529 |
706.34 |
1.49% |
100% |
|
Cd |
0.2 |
0.12 |
0.28 |
0.2 |
0.2 |
0.2 |
0.2 |
0 |
1.83% |
102% |
|
Ce |
18 |
16 |
20 |
20 |
20 |
20 |
20 |
0.08 |
0.40% |
113% |
|
Co |
23 |
20 |
26 |
23 |
23 |
22 |
22 |
0.17 |
0.76% |
98% |
|
Cs |
14 |
13 |
15 |
14 |
14 |
14 |
14 |
0.17 |
1.20% |
101% |
|
Cu |
459 |
434 |
484 |
458 |
473 |
454 |
462 |
8.13 |
1.76% |
101% |
|
Dy |
4 |
3.4 |
4.6 |
4 |
4 |
4 |
4 |
0.03 |
0.70% |
102% |
|
Er |
2 |
1.7 |
2.3 |
2 |
2 |
2 |
2 |
0.05 |
2.11% |
112% |
|
Eu |
1 |
0.7 |
1.3 |
1 |
1 |
1 |
1 |
0.02 |
1.66% |
102% |
|
Fe |
66500 |
63900 |
69100 |
66350 |
65173 |
66451 |
65991 |
580.39 |
0.88% |
99% |
|
Ga |
13 |
11 |
15 |
12 |
12 |
12 |
12 |
0.19 |
1.60% |
91% |
|
Hf |
1 |
0.8 |
1.2 |
1.1 |
1.2 |
1.1 |
1 |
0.05 |
4.16% |
113% |
|
Ho |
0.8 |
0.6 |
1 |
0.8 |
0.7 |
0.9 |
0.8 |
0.07 |
8.80% |
102% |
|
K |
11100 |
10200 |
12000 |
11403 |
11081 |
11239 |
11241 |
131.4 |
1.17% |
101% |
|
La |
8 |
7 |
9 |
9 |
9 |
9 |
9 |
0.08 |
0.92% |
111% |
|
Li |
81 |
76 |
86 |
80 |
77 |
79 |
79 |
1.12 |
1.42% |
97% |
|
Lu |
0.3 |
0.2 |
0.4 |
0.3 |
0.3 |
0.3 |
0.3 |
0.01 |
3.82% |
109% |
|
Mg |
51800 |
47500 |
56100 |
53975 |
52860 |
53911 |
53582 |
511.18 |
0.95% |
103% |
|
Mn |
1440 |
1386 |
1494 |
1467 |
1462 |
1491 |
1473 |
12.66 |
0.86% |
102% |
|
Mo |
1 |
0.9 |
1.1 |
1 |
2 |
2 |
2 |
0.05 |
3.21% |
147% |
|
Na |
20000 |
19000 |
21000 |
21268 |
18966 |
20658 |
20297 |
973.78 |
4.80% |
101% |
|
Nb |
5 |
4.6 |
5.4 |
6 |
6 |
6 |
6 |
0.06 |
1.03% |
117% |
|
Nd |
11 |
9 |
13 |
12 |
12 |
12 |
12 |
0.19 |
1.60% |
107% |
|
AMIS 0571 – Gold Ore – Greenstone Belt |
||||||||||
|
Method: |
.25g |
20mL Aqua Regia + 3 mL HF digested at 80% for 20 minutes, add 20mL of 4% Boric Acid – and digest again at 80% for another 10 minutes |
||||||||
|
Element |
AMIS Certified 4-acid Value (ppm) |
95% Confidence Limits |
Sample A |
Sample B |
Sample C |
Average (ppm) |
Stdev |
% RSD |
% Recovery vs 4-acid value |
|
|
Low |
High |
|||||||||
|
Ni |
175 |
146 |
204 |
184 |
184 |
188 |
185 |
1.79 |
0.97% |
106% |
|
Pb |
191 |
159 |
223 |
209 |
208 |
205 |
207 |
1.8 |
0.87% |
109% |
|
Pr |
3 |
2.6 |
3.4 |
2.7 |
2.6 |
2.7 |
3 |
0.05 |
1.81% |
88% |
|
Rb |
51 |
49 |
53 |
52 |
53 |
52 |
53 |
0.43 |
0.82% |
103% |
|
S |
3800 |
3700 |
3900 |
3807 |
N/A |
3803 |
3805 |
2.36 |
0.06% |
100% |
|
Sb |
6 |
5.6 |
6.4 |
6.3 |
6.4 |
6.4 |
6 |
0.05 |
0.74% |
106% |
|
Sc |
23 |
21 |
25 |
20 |
20 |
20 |
20 |
0.05 |
0.23% |
88% |
|
Sm |
3 |
2.6 |
3.4 |
3.1 |
3.2 |
3.2 |
3 |
0.05 |
1.49% |
106% |
|
Sn |
3 |
2 |
4 |
2.7 |
2.6 |
2.6 |
3 |
0.05 |
1.79% |
88% |
|
Sr |
99 |
95 |
103 |
98 |
98 |
98 |
98 |
0.34 |
0.34% |
99% |
|
Th |
2 |
1.9 |
2.1 |
1.9 |
2 |
2.3 |
2 |
0.16 |
7.96% |
102% |
|
Ti |
4582 |
4225 |
4939 |
4693 |
4692 |
4607 |
4664 |
40.1 |
0.86% |
102% |
|
Tl |
0.3 |
0.2 |
0.4 |
0.3 |
0.3 |
0.3 |
0.3 |
0.02 |
6.65% |
94% |
|
Tm |
0.3 |
0.3 |
0.3 |
0.2 |
0.4 |
0.3 |
0.3 |
0.08 |
24.28% |
102% |
|
U |
0.6 |
0.56 |
0.64 |
0.6 |
0.6 |
0.7 |
0.6 |
0.02 |
3.28% |
104% |
|
V |
192 |
174 |
210 |
198 |
201 |
201 |
200 |
1.31 |
0.65% |
104% |
|
W |
86 |
74 |
98 |
75 |
75 |
76 |
75 |
0.47 |
0.63% |
88% |
|
Y |
20 |
17 |
23 |
19 |
19 |
19 |
19 |
0.08 |
0.44% |
94% |
|
Yb |
2 |
1.7 |
2.3 |
2.3 |
2.4 |
2.4 |
2 |
0.05 |
1.99% |
118% |
|
Zn |
87 |
71 |
103 |
87 |
87 |
90 |
88 |
1.26 |
1.43% |
101% |
|
Zr |
49 |
42 |
56 |
44 |
43 |
43 |
43 |
0.471 |
1.09% |
88% |
* Element certified by Combustion/LECO
Click here to download the Application Note in PDF format.
Join our monthly e-newsletter for expert tips, updates, and exclusive content delivered straight to your inbox.
ColdBlock Technologies Inc.
4551 Zimmerman Ave
Niagara Falls, ON L2E 3M5
info@coldblock.ca.
