Jump to main content
Jump to site search

Issue 11, 2005
Previous Article Next Article

On-line slurry formation and nebulization for inductively coupled plasma atomic emission spectrometry. Multi-element analysis of cocoa and coffee powder samples

Author affiliations

Abstract

A simple on-line slurry formation and direct nebulization system for inductively coupled plasma atomic emission spectrometric multi-element analysis was developed. A laboratory made micro-chamber with a magnetic-stirrer was used for on-line stable slurry formation in a dispersant solution of 0.5% v/v Triton X-100 and 1% v/v HNO3. A Babington-type nebulizer combined with cyclonic-type spray chamber was adopted for on-line slurry nebulization and atomization. All critical parameters were studied and optimized. The performance of the system was demonstrated for Al, Ca, Co, Cr, Cu, Fe, Mg, Mn, Ni, and Zn determination in cocoa and coffee powder samples. The recommended particle size was <70 μm and the slurry concentration was 0.6% m/v, while the working slurry concentration could be ranged from 0.3 to 3.3% m/v with proportional sensitivity. Excellent agreement was found between the standard addition calibration procedure and the calibration curves using simple aqueous standard solutions for almost all of the investigated elements. The reliability of the proposed method was confirmed by comparing it with FAAS and ETAAS wet digestion methods for the analysis of cocoa and coffee samples. No significant differences were observed between the two methods.

Graphical abstract: On-line slurry formation and nebulization for inductively coupled plasma atomic emission spectrometry. Multi-element analysis of cocoa and coffee powder samples

Back to tab navigation

Publication details

The article was received on 10 May 2005, accepted on 12 Aug 2005 and first published on 01 Sep 2005


Article type: Paper
DOI: 10.1039/B506626C
Citation: J. Anal. At. Spectrom., 2005,20, 1280-1286
  •   Request permissions

    On-line slurry formation and nebulization for inductively coupled plasma atomic emission spectrometry. Multi-element analysis of cocoa and coffee powder samples

    A. N. Anthemidis and V. G. Pliatsika, J. Anal. At. Spectrom., 2005, 20, 1280
    DOI: 10.1039/B506626C

Search articles by author

Spotlight

Advertisements