MECHANISM AND STOICHIOMETRY OF THE REDOX REACTION BETWEEN IRON(III) AND CAFFEIC ACID

被引：23

作者：

DEIANA, S

GESSA, C

MANUNZA, B

MARCHETTI, M

USAI, M

机构：

[1] CNR,IST APPLICAZIONE TECH CHIM AVANZATE PROBLEMI AGROBIOL,I-07100 SASSARI,ITALY

[2] UNIV BOLOGNA,IST CHIM AGR,I-40127 BOLOGNA,ITALY

来源：

PLANT AND SOIL | 1992年 / 145卷 / 02期

关键词：

CAFFEIC ACID; IRON(III) REDUCTION; PLANT NUTRITION; SOIL SOLUTION; ROOT EXUDATES;

D O I：

10.1007/BF00010357

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The stoichiometry of the redox reaction of caffeic acid with iron(III) was determined at pH 2.5. A linear increase in the yield of iron(II) was found with increasing iron(III) concentration until reached constant values when iron(III)/caffeic acid molar ratios were higher than 9. The reaction proceeds through two steps each having different rates, and involving intermediates with different redox activities. A mechanism of the redox reaction consistent with our results is proposed.

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页码：287 / 294

页数：8

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