Fresenius' Journal of Analytical Chemistry

, Volume 366, Issue 3, pp 313–315

Comparison of open microwave digestion and digestion by conventional heating for the determination of Cd, Cr, Cu and Pb in algae using transverse heated electrothermal atomic absorption spectrometry

  • N. N. Meeravali
  • S. J. Kumar
Short communication

DOI: 10.1007/s002160050061

Cite this article as:
Meeravali, N. & Kumar, S. Fresenius J Anal Chem (2000) 366: 313. doi:10.1007/s002160050061

Abstract

A comparison between open microwave digestion and digestion by conventional heating was carried out for the determination of Cd, Cr, Cu, and Pb in two algae matrices using transverse heated electrothermal atomic absorption spectrometry (ETAAS). A SRM GBW 08504 cabbage was also analysed. These matrices were digested with HNO3, using a quartz vessel for microwave digestion and PFA vessel for digestion by conventional heating. Cd, Cu and Cr were determined without any modifier, while magnesium nitrate and ammonium phosphate mixed modifier was used for Pb. Results obtained by both the procedures were in good agreement with each other at 95% confidence level, and for SRM GBW 08504 cabbage the values agree well with the certified values. The limits of detection obtained were 0.0004, 0.060, 0.065 and 0.054 mg/kg for Cd, Cr, Cu, and Pb, respectively, using the microwave digestion process. The RSD for Cd was 10–15% and for the other elements 5–10%.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • N. N. Meeravali
    • 1
  • S. J. Kumar
    • 1
  1. 1.National Centre for Compositional Characterization of Materials, ECIL P.O., Hyderabad-500 062, IndiaIN

Personalised recommendations