Pulse radiolysis study on redox reactions of zinc(II)

• Published in: Radiation physics and chemistry (Oxford, England : 1993) Vol. 56; no. 3; pp. 315 - 322
• Main Authors: Domae, M., Chitose, N., Zuo, Z., Katsumura, Y.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.09.1999; Elsevier
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Radiation chemistry; Ionic strength; Atomic ions; Hydrated electron; Kinetic parameter; Aqueous solution; Zinc ion; Divalent cation
• ISSN: 0969-806X; 1879-0895
• DOI: 10.1016/S0969-806X(99)00291-1

The radiation chemical reactions of zinc was investigated by pulse radiolysis technique. The rate constant k( e − aq+Zn(II)) was evaluated for several forms of Zn(II). The value of ε 300 nm(Zn +) was determined as (11,500±500) dm 3 mol −1 cm −1. The rate constants of several Zn + reactions were evaluated. The standard redox potentials (vs SHE) are estimated as following: −2.87 V <E 0(Zn 2+/Zn +) <−2.31 V and E 0(Zn 3+/Zn 2+) >+2.72 V. It is concluded that the zinc injection would have no negative effect on the radiolysis of the coolant in the light water nuclear reactors.