Gamma radiation effects on potassium pertechnetate in carbonate media

被引：12

作者：

Ben Said, K

Seimbille, Y

Fattahi, M

Houee-Lévin, C

Abbé, JC

机构：

[1] Univ Nantes, Ecole Mines, CNRS, IN2P3,UMR 6457,Lab Subatech, F-44307 Nantes 3, France

[2] Univ Paris Sud, Ctr Univ, UMR 8610 CNRS, LPCR, F-91405 Orsay, France

来源：

APPLIED RADIATION AND ISOTOPES | 2001年 / 54卷 / 01期

关键词：

technetium; pertechnetate; gamma irradiation effects; carbonate;

D O I：

10.1016/S0969-8043(00)00162-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Gamma radiation effects on the stability of the oxidation state of radioelements and diffusion within the framework of nuclear waste repositories are often neglected, although it may influence physicochemical processes and thus transfer to biosphere and geosphere. This knowledge is essential to model transport phenomena. This study reports on effects of gamma irradiation on technetium in carbonate media, which is representative of natural systems. Depending on media compositions, the gamma irradiation on pertechnetate leads to formation of Tc(IV) only in the absence of carbonate. CO3- radicals are able to re-oxidise technetium intermediate oxidation states to the +7 state. (C) 2000 Elsevier Science Ltd, All rights reserved.

引用

收藏

页码：45 / 51

页数：7

相关论文

共 18 条

[1] REACTIVITY OF HO2/O-2 RADICALS IN AQUEOUS-SOLUTION [J].

BIELSKI, BHJ ;

CABELLI, DE ;

ARUDI, RL ;

ROSS, AB .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1985, 14 (04) :1041-1100

[2] CRITICAL-REVIEW OF RATE CONSTANTS FOR REACTIONS OF HYDRATED ELECTRONS, HYDROGEN-ATOMS AND HYDROXYL RADICALS (.OH/.O-) IN AQUEOUS-SOLUTION [J].

BUXTON, GV ;

GREENSTOCK, CL ;

HELMAN, WP ;

ROSS, AB .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1988, 17 (02) :513-886

[3] PULSE-RADIOLYSIS STUDY OF MONOVALENT CADMIUM, COBALT, NICKEL AND ZINC IN AQUEOUS-SOLUTION .2. REACTIONS OF MONOVALENT IONS [J].

BUXTON, GV ;

SELLERS, RM ;

MCCRACKEN, DR .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1976, 72 :1464-1476

[4] PRODUCTION, DETECTION, AND CHARACTERIZATION OF TRANSIENT HEXAVALENT TECHNETIUM IN AQUEOUS ALKALINE MEDIA BY PULSE-RADIOLYSIS AND VERY FAST SCAN CYCLIC VOLTAMMETRY [J].

DEUTSCH, E ;

HEINEMAN, WR ;

HURST, R ;

SULLIVAN, JC ;

MULAC, WA ;

GORDON, S .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1978, (23) :1038-1040

[5] ESTIMATION OF RATE CONSTANTS FOR NEAR-DIFFUSION-CONTROLLED REACTIONS IN WATER AT HIGH-TEMPERATURES [J].

ELLIOT, AJ ;

MCCRACKEN, DR ;

BUXTON, GV ;

WOOD, ND .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (09) :1539-1547

[6]

ERIKSEN TE, 1992, RADIOCHIM ACTA, V58-9, P67

[7] TC-99M GENERATORS .2. PHYSICOCHEMICAL FACTORS IN THE RADIOLYTIC REDUCTION OF PERTECHNETATE [J].

HELLERGROSSMAN, L ;

ABRASHKIN, S ;

SHAFFERMAN, A ;

DAVIS, MA ;

TAUBE, RA .

INTERNATIONAL JOURNAL OF APPLIED RADIATION AND ISOTOPES, 1981, 32 (07) :501-506

[8]

KRYUCHKOV SV, 1979, P AC SCI USSR PHYS C, V247, P690

[9]

LEFORT M, 1963, B SOC CHIM FR, P882

[10] PULSE-RADIOLYSIS STUDIES ON PERTECHNETATE AND PERRHENATE IN AQUEOUS-MEDIA - DECAY OF THE TECHNETIUM(VI) TRANSIENT [J].

LIBSON, K ;

SULLIVAN, JC ;

MULAC, WA ;

GORDON, S ;

DEUTSCH, E .

INORGANIC CHEMISTRY, 1989, 28 (02) :375-377