APPLICATION NOTE
Superphosphate & Potassic Super Fertilizer
SUMMARY
This application note summarizes the digestion of Superphosphate & Potassic Super Fertilizers using ColdBlock™ Digestion CB15S Technology.
| Instrument: | ColdBlock CB15S sample digester, chiller, ICP-OES |
| Published: | September 2022 |
| Digestion Time: | 20 Minutes |
| Acid Used: | Aqua Regia |
| Average ColdBlock Recovery vs. CRM: |
|
METHODOLOGY
- Chiller temperature was set to 5°C
- 5g of each sample was weighed and placed into a ColdBlock™ Digestion vessel
- 20ml Aqua Regia was added
- Sample was digested at 80% power for 20 minutes
- Sample was cooled and bulked to 50mL using 2% HNO3 v/v
DISCUSSION
- After 20 minutes the samples were clear, and no visible sample material remains
Superphosphate and Potassic Super after bulk up
Results
|
Superphosphate Fertilizer |
|||||
|
Method: |
05.g |
20mL Aqua Regia – Digest at 80% for 20 minutes. |
|||
|
Element |
Reference Value (ppm) |
ColdBlock Average (ppm) |
Stdev |
% RSD |
% Recovery |
|
Ca |
214680 |
211205 |
2196 |
0.5 |
98% |
|
Cd |
18.22 |
16.84 |
0.07 |
0.7 |
92% |
|
P |
94860 |
94293 |
633 |
1 |
99% |
|
Potassic Super |
|||||
|
Method: |
05.g |
20mL Aqua Regia – Digest at 80% for 20 minutes. |
|||
|
Element |
Reference Value (ppm) |
ColdBlock Average (ppm) |
Stdev |
% RSD |
% Recovery |
|
Ca |
197140 |
194892 |
165 |
0.1 |
99% |
|
Cd |
19.94 |
18.24 |
0.685 |
3.8 |
91% |
|
K |
104160 |
96619 |
3360 |
3.5 |
93% |
|
P |
83740 |
80356 |
3959 |
4.9 |
96% |
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.