A new approach for the determination of sunscreen levels in seawater by ultraviolet absorption spectrophotometry
Fig 5
Absorption spectra of samples collected June 28th, 2020, from an Atlantic beach (“beach” samples) and in a swimming pool with bathers (SP) and empty of bathers (SP-E) in both, filtered (diss) and unfiltered (total) fractions.
Dashed line indicates the 303 nm wavelength. Embedded Table shows, for each sample, the wavelength of maximum absorbance (λmax), the percentage of absorbance measured at 303 nm regarding maximum absorbance and the calculated concentrations using the external calibration curve.