RAPID ANALYSIS OF ORGANIC-CARBON AND NITROGEN IN PARTICULATE MATERIALS

被引：456

作者：

NIEUWENHUIZE, J

MAAS, YEM

MIDDELBURG, JJ

机构：

[1] Netherlands Institute of Ecology, Centre for Estuarine and Coastal Ecology, 4401 EA Yerseke

来源：

MARINE CHEMISTRY | 1994年 / 45卷 / 03期

关键词：

D O I：

10.1016/0304-4203(94)90005-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method for rapid determination of organic carbon and nitrogen in natural particulate materials is described. The procedure allows the determination of 60 samples per day by a single analyst. It involves the determination of carbon and nitrogen using an automatic CN-analyzer following the partitioning of inorganic and organic carbon phase by acidification with 25% HCI in situ within silver sample cups. The technique eliminates reweighing procedures, losses of organic and inorganic compounds (except carbonates and sulphides) and is free from matrix interferences. Extensive testing and application showed long-term precisions for organic carbon and nitrogen of about 3%. The accuracy is excellent, irrespective of the calcium carbonate content of the sample.

引用

页码：217 / 224

页数：8

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