Multi-Element - CDN-ME-1902 - ColdBlock Technologies

APPLICATION NOTE

SUMMARY

The application note summarizes the digestion of CDN-ME-1902, a multi-element Reference Material 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:	Reverse Aqua Regia, HF & H₃BO₃
Average ColdBlock Recovery vs. CRM:	102% Copper 104% Lead 103% Zinc

The addition of Boric acid will help re-solubilize any insoluble fluorides and will help neutralize any remaining HF in solution
To improve silver recoveries, bulk up with >20% HClv/v
If the Sulfide content of your sample is > 10 % – reverse

Standard CDN-ME-1902 was prepared by combining miscellaneous ores.
cdnlabs.com

CDN-ME-1902; Multi-Element; CDN Resource Laboratories Ltd; Langley, British Columbia (November, 2019)

CDN-ME-1902
Method:	0.25g	20mL reverse 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	CDN Labs Certified 4-acid Value (ppm)	CDN Labs 95% Confidence Limits		Sample A	Sample B	Sample C	Average (ppm)	Stdev	% RSD	% Recovery vs 4-acid value
Element		Low	High	Sample A	Sample B	Sample C	Average (ppm)	Stdev	% RSD	% Recovery vs 4-acid value
Ag	349	332	366	301	301	310	304	4.06	1.3%	87%
Cu	7810	7540	8080	7949	7986	8004	7980	23.09	0.3%	102%
Pb	22000	21000	23000	22648	22768	23041	22819	164.59	0.7%	104%
Zn	36600	34300	38900	37396	37827	37738	37654	185.77	0.5%	103%

Click here to download the Application Note in PDF format.

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4551 Zimmerman Ave
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info@coldblock.ca.