APPLICATION NOTE
Contaminated Soil – EnviroMAT – SS-1
SUMMARY
The application note summarizes the digestion of SS-1, a contaminated soil matrix reference material using ColdBlock™ Digestion Pro Series Technology.
| Instrument: | ColdBlock CBM (with quartz test tubes), chiller, ICP-MS & ICP-OES |
| Published: | July 2024 |
| Digestion Time: | 30 Minutes |
| Acid Used: | HNO3 & HCI |
| Average ColdBlock Recovery vs. CRM: |
|
METHODOLOGY
- Chiller temperature was set to -5°C
- 0.5g of each sample was weighed and placed into a quartz ColdBlock™ Digestion vessel
- 10 mL of HNO3 was added
- Sample was digested at 70% power for 20 minutes
- 10mL of HCl was added and samples were digested again at 70% for 10 minutes
- Samples were cooled and bulked to 40mL using 2% HNO3v/v
DISCUSSION
- Samples were filtered prior to analysis by ICP-MS & OES
- EnviroMAT SS-1 is a type B naturally contaminated soil. It is not spiked or fortified
Results
|
Table 1 – Results of HNO3 & HCl digestion – SS-1 Contaminated Soil |
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|
Method: |
0.5g |
10mL HNO3 70% power for 20 minutes, then add 10mL HCl and digest again at 70% power for 10 minutes |
|||||||
|
Element |
Consensus Value (ppm) |
+/- |
Sample A |
Sample B |
Sample C |
Average (ppm) |
Stdev |
RSD |
Recovery |
|
Ag |
0.88 |
0.88 |
0.95 |
0.91 |
0.89 |
0.9 |
0.02 |
2.7% |
104% |
|
Al |
12163 |
410 |
12779 |
12623 |
11859 |
12420 |
402 |
3.2% |
102% |
|
As |
20.7 |
1.0 |
22.06 |
21.79 |
21.52 |
21.79 |
0.22 |
1.0% |
105% |
|
B |
26.9 |
8.4 |
29.2 |
25.1 |
23.7 |
26 |
2.3 |
9.0% |
97% |
|
Ba |
464 |
16 |
476 |
473 |
462 |
471 |
5.9 |
1.3% |
101% |
|
Be |
0.48 |
0.05 |
0.46 |
0.47 |
0.5 |
0.477 |
0.017 |
3.6% |
99% |
|
Ca |
50265 |
1213 |
49461 |
49546 |
48744 |
49250 |
359.7 |
0.7% |
98% |
|
Cd |
3.2 |
0.2 |
3.2 |
3.3 |
3.2 |
3.2 |
0.05 |
1.5% |
101% |
|
Co |
12.9 |
0.4 |
13.0 |
12.3 |
13.2 |
12.8 |
0.4 |
3.1% |
99% |
|
Cr |
103 |
5 |
108 |
106 |
106 |
106.7 |
1.1 |
1.0% |
104% |
|
Cu |
403 |
10 |
406 |
425 |
398 |
409 |
11.3 |
2.8% |
102% |
|
Fe |
72000 |
2273 |
71986 |
73914 |
70996 |
72299 |
1212 |
1.7% |
100% |
|
Hg |
0.41 |
0.02 |
0.40 |
0.45 |
0.41 |
0.42 |
0.02 |
5.1% |
102% |
|
K |
2232 |
150 |
2288 |
2193 |
2199 |
2227 |
43.4 |
2.0% |
100% |
|
Li |
14.3 |
1.4 |
14.2 |
14.3 |
13.6 |
14.0 |
0.3 |
2.2% |
98% |
|
Mg |
9690 |
230 |
9867 |
10088 |
9683 |
9879 |
166 |
1.7% |
102% |
|
Mn |
737 |
19 |
758 |
747 |
734 |
746 |
9.8 |
1.3% |
101% |
|
Mo |
6.8 |
0.3 |
6.7 |
6.7 |
7.4 |
6.92 |
0.3 |
4.5% |
102% |
|
Na |
650 |
64 |
739 |
742 |
736 |
739 |
2.4 |
0.3% |
114% |
|
Ni |
59.2 |
1.3 |
62.6 |
63.6 |
63.7 |
63.3 |
0.5 |
0.8% |
107% |
|
P |
1552 |
34 |
1621 |
1614 |
1643 |
1626 |
12.4 |
0.8% |
105% |
|
Pb |
764 |
15 |
780 |
762 |
775 |
772.5 |
7.8 |
1.0% |
101% |
|
S |
1916 |
140 |
1927 |
1914 |
1913 |
1918 |
6.4 |
0.3% |
100% |
|
Sb |
5.5 |
1.1 |
5.60 |
5.2 |
6.0 |
5.6 |
0.3 |
5.8% |
102% |
|
Se |
0.78 |
0.14 |
0.82 |
0.86 |
0.78 |
0.82 |
0.03 |
4.0% |
105% |
|
Sn |
340 |
17 |
353.00 |
366 |
367 |
362.00 |
6.4 |
1.8% |
106% |
|
Sr |
114 |
1 |
114 |
112 |
114 |
113.4 |
0.7 |
0.6% |
99% |
|
Ti |
530 |
57 |
533 |
530 |
531 |
531.33 |
1.2 |
0.2% |
100% |
|
U |
0.78 |
0.03 |
0.79 |
0.77 |
0.75 |
0.77 |
0.02 |
2.1% |
99% |
|
V |
27.2 |
1.4 |
28.97 |
28.93 |
27.97 |
28.62 |
0.5 |
1.6% |
105% |
|
Zn |
1114 |
37 |
1062 |
1057 |
1124 |
1081 |
30.4 |
2.8% |
97% |
Click here to download the Application Note in PDF format.
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4551 Zimmerman Ave
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info@coldblock.ca.