APPLICATION NOTE
Fertilizer – 20-20-20 (P-K-N)
SUMMARY
The application note summarizes the digestion of a 20-20-20 (P-K-N) Fertilizer using ColdBlock™ Digestion CB15S Technology.
| Instrument: | ColdBlock CB12L sample digester, chiller, ICP-OES |
| Published: | September 2022 |
| Digestion Time: | 10 Minutes |
| Acid Used: | HNO3 & HCl |
| Average ColdBlock Recovery vs. CRM: |
|
METHODOLOGY
- Chiller temperature was set to 5°C
- 0.5g of each sample was weighed and placed into a ColdBlock™ Digestion vessel
- 10mL HCl + 10mL HNO3 was added
- Sample was digested at 80% power for 10 minutes
- Sample was cooled and bulked to 50mL using Ultrapure water
DISCUSSION
- After 20 minutes the samples were clear, and no visible sample material remains
- Sample material climbed the test tube during the digestion but fell back down with the condensation effectproduced by the cooling zone
Results
|
20-20-20 (P-K-N) Fertlizer |
|||||
|
Method: |
0.5g |
10mL HCl + 10mL HNO3- Digest at 80% for 10 minutes. |
|||
|
Element |
Reference Values (wt.%) |
ColdBlock Average (wt.%) |
Stdev |
% RSD |
% Recovery |
|
B |
0.02 |
0.02 |
0.0005 |
2.3% |
108% |
|
Cu |
0.05 |
0.05 |
0.0015 |
3.0% |
100% |
|
Fe |
0.1 |
0.1 |
0.005 |
5.0% |
100% |
|
K2O |
20 |
19.5 |
0.05 |
0.3% |
98% |
|
Mn |
0.05 |
0.05 |
0.0025 |
5.0% |
100% |
|
P2O5 |
20 |
22 |
0.37 |
1.7% |
110% |
|
Zn |
0.05 |
0.05 |
0.0001 |
0.2% |
100% |
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.