DETERMINATION OF NITROGEN IN SOILS BY RAPID HIGH-TEMPERATURE KJELDAHL DIGESTION AND AUTOANALYSIS

被引：11

作者：

SKJEMSTAD, JO ^{[1
]}

REEVE, R ^{[1
]}

机构：

[1] CSIRO, DIV SOILS, CUNNINGHAM LAB, ST LUCIA 4067, Qld, AUSTRALIA

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1976年 / 7卷 / 03期

关键词：

D O I：

10.1080/00103627609366636

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Kjeldahl digestion time can be reduced to 10 min after clearing by using a phosphoric - sulphuric acid mixture. The digest is analyzed for N by autoanalysis incorporating a distillation step. Agreement with a standard 5-h digestion procedure is satisfactory and acceptable level of precision is obtained. The method may be readily adapted to include NO2 and NO3 and recovery of added NO3 is satisfactory.

引用

页码：229 / 239

页数：11