“…The vessel was then irradiated in a 137 Cs gamma source Gammacell 1000 Elite from MDS Nordion with a dose rate of 0.15 Gy s À1 (determined using Fricke dosimetry [23]). After the desired irradiation time, the uranyl concentration in solution was measured using the Arsenazo III method with a S2000 spectrophotometer from WPA at a wavelength of 653 nm ( is 63 000 M À1 cm À1 ) described in [24,25]. Sample (1.5 mL) was mixed with 40 lL 0.03% Arsenazo III reagent and 65 lL 1 M HCl.…”