DETERMINATION OF TOTAL SOIL AND PLANT NITROGEN USING A MICRODISTILLATION UNIT IN A CONTINUOUS-FLOW ANALYZER

被引：46

作者：

MCLEOD, S

机构：

[1] CSIRO Division of Soils, Glen Osmond, 5064 SA

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 266卷 / 01期

关键词：

CONTINUOUS FLOW; MICRODISTILLATION; NITROGEN;

D O I：

10.1016/0003-2670(92)85285-E

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A procedure for the automated determination of soil and plant nitrogen from Kjeldahl digests has been proposed. The continuous flow system involved the use of a unique micro-distillation unit followed by colourimetric detection of the pure ammonium chloride distillate. Optimisation of the indophenol reaction is shown together with a standard manual procedure for comparison. Interference-free determinations may be carried out at a minimum of 30 samples h-1 and the system has proved to be most reliable for routine analysis.

引用

页码：113 / 117

页数：5

共 6 条

[1] MICRODISTILLATION UNIT FOR USE IN CONTINUOUS-FLOW ANALYZERS - ITS CONSTRUCTION AND USE IN DETERMINATION OF AMMONIA AND NITRATE IN SOILS [J].