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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Anal Chem. 2018 Apr 13;90(9):5654–5663. doi: 10.1021/acs.analchem.7b05180

Figure 3.

Figure 3

SIMS product ion quadratic calibration images, curves, and regression data: calibration images for (a) PQS (m/z 260 → 175.07) and (b) HQNO (m/z 260 → 159.07) printed on dry agar; and (c) calibration curves for PQS and HQNO. The color scale was magnified by a factor of 10 in the red boxes in a and b to illuminate the lower deposition quantities, and the blue quantities in the image indicate the quantitation range used. Additional calibration information, including calibration curves for C9-PQS and NQNO, can be found in Figures S3 and S4.