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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Anal Bioanal Chem. 2016 Oct 19;409(1):169–178. doi: 10.1007/s00216-016-9983-0

Figure 4.

Figure 4

Calibration curve of palmitoleic acid (POA) standard, performed in duplicate. POA was dissolved in basal buffer and perfused through the chip at the inlet upstream of the cell chamber. Standard filled the loop, was loaded onto the SPE bed, washed and eluted to the MS in an on-line format.