DETERMINATION OF ORGANIC-CARBON IN AQUEOUS EXTRACTS OF SOILS AND FERTILIZERS

被引：120

作者：

CIAVATTA, C

GOVI, M

ANTISARI, LV

SEQUI, P

机构：

[1] Institute of Agricultural Chemistry, University of Bologna, 40126, Bologna

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1991年 / 22卷 / 9-10期

关键词：

D O I：

10.1080/00103629109368455

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A simple and accurate method for the routine determination of organic carbon in aqueous extracts of soils and fertilizers is described. Samples are oxidized for exactly 10 minutes with a mixture of 5 mL of 2N potassium dichromate plus 20 mL of concentrated sulphuric acid at 160 +/- 2-degrees-C, and the excess dichromate is titrated either potentiometrically or manually with iron (II) sulphate. An appropriate correction factor (1.05) is suggested for aqueous extracts from humic acid.

引用

页码：795 / 807

页数：13

共 12 条

[1] USE OF THE VANSLYKE - NEIL MANOMETRIC APPARATUS FOR THE DETERMINATION OF ORGANIC AND INORGANIC CARBON IN SOIL AND OF ORGANIC CARBON IN SOIL EXTRACTS [J].