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- Posts: 39
- Joined: Mon Jan 28, 2013 1:32 pm
I would like to ask some questions about matrix matched calibration.
My samples are vegetable and fruit.
As I know, matrix matched solution should be used.
However, my boss would like me to buy a pesticide matrix spiked POWDER (as CRM) instead of matrix blank solution.
I think I should buy both spiked powder (if available) and matrix blank solution in order to maintain fixed matrix content of each standard for calibration.
Would this increase the uncertainty of matrix solution? (because there are 2 matrix source, 1 from matrix blank and 1 from spiked powder.)
Also I would like to hear your opinion on whether I should use pesticide matrix spike or use matrix blank solution and spike with pesticide CRM myself.
Please share your suggestion, thank you so much.