Fig. 6From: Water–air transfer rates of microplastic particles through bubble bursting as a function of particle sizea) Water–air transfer factors fw-a as a function of particle diameter in the range from 0.35 µm to 2.0 µm, and b) droplet volume Qd generated per second by all droplets with the given maximum droplet diameter. Results for low volume flow rates are shown in red, for high volume flow rates in blue. Error bars in 6a indicate uncertainty due to a variable background concentration of up to 50 particles per literBack to article page