DETERMINATION OF COPPER AND IRON IN MICROLITER SAMPLES BY FLAME ATOMIC EMISSION SPECTROMETRY WITH A TANTALUM FILAMENT VAPORIZER

被引：11

作者：

MCCULLOUGH, MR ^{[1
]}

VICKERS, TJ ^{[1
]}

机构：

[1] FLORIDA STATE UNIV, DEPT CHEM, TALLAHASSEE, FL 32306 USA

来源：

ANALYTICAL CHEMISTRY | 1976年 / 48卷 / 07期

关键词：

D O I：

10.1021/ac60371a026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple microsampling attachment for conventional slot burners is described. The device was used for the determination of Cu and Fe in 10 .mu.l serum samples by flame atomic emission spectrometry with a nitrous oxide/acetylene flame. Signals were insensitive to filament aging up to approximately 50 heating cycles for a single filament and insensitive to the presence of chloride, nitrate, or sulfate as the counterion. For aqueous solutions the absolute detection limits were 0.65 ng for Cu and 0.88 ng for Fe. At the 1 .mu.g/ml level relative SD (10 measurements) were 3.6% for Cu and 2.8% for Fe. Measurements made with a control serum sample indicated adequate accuracy and precision for the determination of Cu and Fe at normal levels in human serum using either a standard additions or an analytical curve procedure.

引用

页码：1006 / 1008

页数：3