Fig. 5: Spin-capture process of reactive oxygen species generated from sea spray samples after contact with water.

The black line is the observed spectrum of the actual EPR, the red line is the standard curve of DMPO-OH, and the blue line is the standard curve of DMPO-R. The green line is a fitting curve formed by the addition of the red and blue lines. The vertical dashed lines indicate the positions of each peak of the DMPO-OH and DMPO-R adducts.