MATRIX EFFECTS OF POTASSIUM-CHLORIDE AND PHOSPHORIC-ACID IN ARGON INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY

被引：29

作者：

BUDIC, B

HUDNIK, V

机构：

[1] National Institute of Chemistry, 61115 Ljubljana

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1994年 / 9卷 / 01期

关键词：

INDUCTIVELY COUPLED PLASMA; ATOMIC EMISSION SPECTROMETRY; MATRIX INTERFERENCE; RADIOFREQUENCY FORWARD POWER; MATRIX EFFECTS CORRECTION;

D O I：

10.1039/ja9940900053

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Changes in analyte emission intensity in the presence of low concentrations of potassium chloride and phosphoric acid were studied in inductively coupled plasma atomic emission spectrometry. It has been shown that both matrices can cause significant depressant effects on the relative emission intensities of Sr, Mg, Mn, Fe, Cu and Zn under normal analytical operating conditions and that the lowering of intensity was more pronounced for KCl than for H3PO4 at the same analyte to matrix concentration ratio. The matrix effects can be corrected by increasing the power supplied to the plasma, which was found to correlate with the excitation energy of the emission line.

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页码：53 / 57

页数：5

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