Metals in Hemp and Cannabis

Greetings All,

I just finished watching the  webinar regarding the AOAC method for cannabis and hemp.  From what I gather, it is recommended to use 0.5g of material, 10 mLs of concentrated acid (9mLs nitric and 1 mL hydrochloric) then the final digest is taken up to a volume of 50mLs with DI water.  That makes for a sample having 1% TDS and a 20% acid concentration. Is there another dilution of the sample somewhere in the method before introduction to the instrument?  I don't see anything in any of the documentation or the presentation materials.  I'm trying to wrap my head around the final sample matrix and the concentrations that the instrument is actually measuring.



Was this helpful?