COMPARISON OF STANDARD MATERIALS FOR THE ESTABLISHMENT OF CALIBRATION CURVES IN SOLID SAMPLING GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY - DIRECT DETERMINATION OF COPPER IN POWDERED BIOLOGICAL SAMPLES

被引：13

作者：

ATSUYA, I

AKATSUKA, K

ITOH, K

机构：

[1] Kitami Institute of Technology, Kitami, 090

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1990年 / 337卷 / 03期

关键词：

D O I：

10.1007/BF00321977

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The selection of standard materials for the establishment of calibration curves is one of the most important problems in the direct analysis of biological samples by GFAAS. Three kinds of standard materials, NBS tomato leaves, coprecipitates with magnesium oxinate and Ni/DMG/PAN were investigated. It was found that it is possible to use both the NBS-SRM and the synthetic reference material prepared by coprecipitation with magnesium oxinate as standard materials for the direct determination of copper in several biological samples issued from NBS and NIES. However, too low results are obtained when the synthetic reference material prepared by coprecipitation with Ni/DMG/PAN is used. In order to clarify this, the effects of nickel and magnesium were examined and the role of magnesium was discussed. © 1990 Springer-Verlag.

引用

页码：294 / 298

页数：5

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