RADIATION-INDUCED EFFECTS IN LIGNIN MODEL COMPOUNDS - A PULSE AND STEADY-STATE RADIOLYSIS STUDY

被引：6
|
作者：
CHUAQUI, CA
RAJAGOPAL, S
KOVACS, A
STEPANIK, T
MERRITT, J
GYORGY, I
WHITEHOUSE, R
EWING, D
机构：
[1] AECL,RES,WHITESHELL LABS,RES CHEM BRANCH,PINAWA R0E 1L0,MB,CANADA
[2] HUNGARIAN ACAD SCI,INST ISOTOPES,H-1525 BUDAPEST,HUNGARY
来源：
TETRAHEDRON | 1993年 / 49卷 / 43期
关键词：
PULSE RADIOLYSIS; GAMMA-RADIOLYSIS; IRRADIATION; LIGNIN; MODEL COMPOUNDS;
D O I：
10.1016/S0040-4020(01)80172-1
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A lignin model compound beta-(2-methoxyphenoxy)-3,4-dimethoxyacetophenone (I) was subjected to Co-60 gamma irradiation and pulse radiolysis under different conditions (dose, medium, pH). Interaction with hydroxyl radicals resulted in aryl hydroxylation, fragmentation, and cleavage. A hydroxylation-cleavage pathway was found at all pH values. At alkaline pH, fragmentation reactions were also observed. The predominant reaction with solvated electrons was fragmentation of the beta-aryl ether bond followed by cleavage reactions.
引用
收藏
页码：9689 / 9698
页数：10
相关论文
共 50 条
  • [31] RADIATION EFFECTS ON STEADY-STATE CELL POPULATIONS
    LAJTHA, LG
    RADIATION RESEARCH, 1968, 33 (03) : 659 - &
  • [32] RADIATION-INDUCED REACTIONS OF NITROANTHRACENE DERIVATIVES STUDIED BY GAMMA-RADIOLYSIS AND PULSE-RADIOLYSIS
    NAKAYAMA, T
    KIMOTO, M
    HAMANOUE, K
    TERANISHI, H
    WASHIO, M
    TAGAWA, S
    TABATA, Y
    RADIATION PHYSICS AND CHEMISTRY, 1987, 29 (05) : 387 - 392
  • [33] Free-radical-induced oxidation of hydroxymethanesulfonate in aqueous solution .2. A pulse and steady-state radiolysis study of oxygenated solutions
    Barlow, S
    Buxton, GV
    Murray, SA
    Salmon, GA
    JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (20): : 3641 - 3645
  • [34] STEADY-STATE AND PULSE-RADIOLYSIS STUDIES OF MOLYBDENUM OCTACYANATE IN AQUEOUS-SOLUTIONS
    FARAGGI, M
    JOURNAL OF PHYSICAL CHEMISTRY, 1976, 80 (21): : 2316 - 2320
  • [35] Pulse radiolysis and steady-state analyses of the reaction between hydroethidine and superoxide and other oxidants
    Zielonka, Jacek
    Sarna, Tadeusz
    Roberts, Joan E.
    Wishart, James F.
    Kalyanaraman, B.
    ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, 2006, 456 (01) : 39 - 47
  • [36] Photoreduction of Azaoxoisoaporphines by Amines: Laser Flash and Steady-State Photolysis and Pulse Radiolysis Studies
    de la Fuente, Julio R.
    Aliaga, Christian
    Canete, Alvaro
    Kciuk, Gabriel
    Szreder, Tomasz
    Bobrowski, Krzysztof
    PHOTOCHEMISTRY AND PHOTOBIOLOGY, 2013, 89 (06) : 1417 - 1426
  • [37] Radiation-induced energy and charge transport in polystyrene - Laser photolysis and pulse radiolysis comparative study
    Zhang, GH
    Thomas, JK
    IRRADIATION OF POLYMERS: FUNDAMENTALS AND TECHNOLOGICAL APPLICATIONS, 1996, 620 : 28 - 54
  • [38] STEADY-STATE AND PULSE RADIOLYSIS STUDIES OF CL2- REACTIVITY IN MICELLAR SYSTEMS
    FENDLER, JH
    FENDLER, EJ
    PATTERSO.LK
    BOGAN, G
    BANSAL, KM
    JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1972, (01) : 14 - &
  • [39] INTERLABORATORY COMPARISON OF RADIATION-INDUCED ATTENUATION IN OPTICAL FIBERS .2. STEADY-STATE EXPOSURES
    TAYLOR, EW
    FRIEBELE, EJ
    HENSCHEL, H
    WEST, RH
    KRINSKY, JA
    BARNES, CE
    JOURNAL OF LIGHTWAVE TECHNOLOGY, 1990, 8 (06) : 967 - 975
  • [40] INTERLABORATORY COMPARISON OF RADIATION-INDUCED ATTENUATION IN OPTICAL FIBERS .1. STEADY-STATE EXPOSURES
    FRIEBELE, EJ
    TAYLOR, EW
    DEBEAUREGARD, GT
    WALL, JA
    BARNES, CE
    JOURNAL OF LIGHTWAVE TECHNOLOGY, 1988, 6 (02) : 165 - 171
12345