please Change the following sentence：The droplet size distribution of Pickering emulsions was measured by using a Malvern MasterSizer 3000 Malvern Instruments Ltd Worcestershire UK Droplet size measur

The Malvern MasterSizer 3000 (Malvern Instruments Ltd, Worcestershire, UK) was utilized to determine the droplet size distribution of Pickering emulsions. The droplet size was reported as the volume-average diameter, d4, 3 = Σnidi4Σnidi3, where ni represents the number of particles with diameter di. The refractive indices of water and sunflower oil were considered as 1.33 and 1.52, respectively.