High Concentration calculations on Na when the signal intensity for the sample is higher than the blank?

Hi all -

 

I am very new the ICP-OES analysis and I am very confused by the values that the Agilent software is calculating. I prepare samples with a 100 fold dilution (I am running in organic solvent not aqueous) and for my samples I am getting signal intensities that are smaller than the blank or any of the calibration standards, but then it is calculating my final concentration as really high. I do not understand how this can be. Any advise would be appreciated. Thank you!

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