During sample pretreatment using SPE, my obtained LOD was 0.07 ng/mL, but my linear range was from 15 – 1000 ng/mL? How can I explain it?

I do not know if my explanation is right and sufficient, as listed below: In concentration lower than 15 ng/mL, the method definitely had a linearity, but with lower R2, which was inferior to...

21 May 2018 8,445 13 View