DETECTION OF HYDROXYL RADICAL FROM PHOTOEXCITED CHLOROPHYLLS ON MAGNESIUM-OXIDE POWDER IN AQUEOUS-MEDIA USING THE ESR SPIN-TRAPPING TECHNIQUE

被引：4

作者：

NODA, H ^{[1
]}

OIKAWA, K ^{[1
]}

OHYANISHIGUCHI, H ^{[1
]}

KAMADA, H ^{[1
]}

机构：

[1] YAMAGATA RES INST TECHNOL, YAMAGATA 990, JAPAN

来源：

CHEMISTRY LETTERS | 1994年 / 10期

关键词：

D O I：

10.1246/cl.1994.1949

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A potent active oxygen of hydroxyl radical has been detected in aqueous media of the photoexcited chlorophylls on MgO powder by using the ESR spin trapping technique. The mechanism for the production of the radical is discussed refering to three-electrons reduction of oxygen by the photoexcited chlorophylls on MgO.

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页码：1949 / 1952

页数：4

相关论文

共 10 条

[1] SPIN TRAPPING - KINETICS OF THE REACTION OF SUPEROXIDE AND HYDROXYL RADICALS WITH NITRONES [J].

FINKELSTEIN, E ;

ROSEN, GM ;

RAUCKMAN, EJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (15) :4994-4999

[2]

GOLLNICK K, 1968, ADV PHOTOCHEM, V6, P1

[3]

Harber F., 1934, P ROY SOC LOND A MAT, V147, P332

[4] SUPEROXIDE FORMATION IN SPINACH-CHLOROPLASTS - ELECTRON-SPIN RESONANCE DETECTION BY SPIN TRAPPING [J].

HARBOUR, JR ;

BOLTON, JR .

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1975, 64 (03) :803-807

[5] INVOLVEMENT OF HYDROXYL RADICAL IN DESTRUCTIVE PHOTO-OXIDATION OF CHLOROPHYLLS INVIVO AND INVITRO [J].

HARBOUR, JR ;

BOLTON, JR .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1978, 28 (02) :231-234

[6] SUPEROXIDE GENERATION IN PHOTOLYSIS OF AQUEOUS CADMIUM-SULFIDE DISPERSIONS - DETECTION BY SPIN TRAPPING [J].

HARBOUR, JR ;

HAIR, ML .

JOURNAL OF PHYSICAL CHEMISTRY, 1977, 81 (18) :1791-1793

[7]

INOUE Y, 1973, BIOCHIM BIOPHYS ACTA, V395, P483

[8] NEW METHOD OF DETECTING SINGLET OXYGEN PRODUCTION [J].

LION, Y ;

DELMELLE, M ;

VANDEVORST, A .

NATURE, 1976, 263 (5576) :442-443

[9] CHARACTERIZATION OF ELECTRON-ACCEPTORS A0 AND A1 IN CYANOBACTERIAL PHOTOSYSTEM-I [J].

SMITH, NS ;

MANSFIELD, RW ;

NUGENT, JHA ;

EVANS, MCW .

BIOCHIMICA ET BIOPHYSICA ACTA, 1987, 892 (03) :331-334

[10] SUPEROXIDE PHOTOGENERATION BY CHLOROPHYLL-A IN WATER ACETONE ELECTRON-SPIN-RESONANCE STUDIES OF RADICAL INTERMEDIATES IN CHLOROPHYLL-A PHOTOREACTION INVITRO [J].

YOU, JL ;

FONG, FK .

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1986, 139 (03) :1124-1129