thumbnail

Back-extraction of trace elements from organometallic-halide extracts for determination by flameless atomic absorption spectrometry

Analytical Chemistry

By:
,

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

Abstract

The Methyl isobutyl ketone-Amine synerGistic Iodkte Complex (MAGIC) extraction system offers the advantage that a large number of trace elements can be rapidly determined with a single sample preparation procedure. However, many of the elements extracted by the MAGIC system form volatile organometallic halide salts when the organic extract is heated in the graphite furnace. High concentrations of some elements such as Cu and Zn extracted by the system from anomalous geological samples produce serious interferences when certain other elements are determined by flameless atomic absorption. Stripping systems have been developed using solutions of HNO3, H2SO4, and CH3COOH individually or combined with H2O2 in order to circumvent these problems. With these systems most of the elements in the organic extract can be sequentially stripped into an aqueous phase. Organometallic volatilization and the most serious interelement interferences, therefore, can be eliminated by stripping with various combinations of reagents in a series of steps.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Back-extraction of trace elements from organometallic-halide extracts for determination by flameless atomic absorption spectrometry
Series title:
Analytical Chemistry
Volume
53
Issue:
1
Year Published:
1981
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
65
Last page:
70
Number of Pages:
6