Fertilizer - 20-20-20 (P-K-N) - ColdBlock Technologies

APPLICATION NOTE

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:	100% Iron 110% Phosphorus 97% Potassium

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

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.