Engineering Physics Annotation << Back Optical detecting iodine-containing of substances in liquid environments. ii. working out absorption method of simultaneous detecting i2, i- and i3- in real time S.V. Kireev, I.G. Simanovsky, S.L. Shnyrev Optical absorption method for determining concentrations of iodine-containing substances (I2, I- and I3-) in real time in liquid media is reported. The essence of the method is to measure simultaneously at three wavelengths (206 nm, 229 nm и 288 nm) the intensity of the radiation that passes through the investigated solution. This method can be used for real-time chemical reaction kinetics monitoring and for control of the concentrations of iodine-containing substances in liquid media formed when spent nuclear fuel is reprocessed at nuclear fuel cycle plants. The sensitivity of this method allows to produce reliable and real-time control both the technological process of fuel reprocessing and the operations of purification systems. E-mail: kireev@eai.mephi.ru