Evaluation of an ultrasonic digestion procedure for total metal determination in sediment reference materials

Claudia Brunori, I. Ipolyi, Laura Macaluso, Roberto Morabito

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In this work the possibility to use a simple and easily available laboratory device - routine ultrasonic bath - has been evaluated for total metal determination in sediments from different origin. The investigated instrumental parameters were time and temperature, whereas power was maintained constant set at 100% of nominal power. Four different sets of parameters were applied on a lake sediment reference material (RM), the results obtained for five elements - Cd, Cr, Cu, Ni and Zn - were statistically compared with those obtained by a previously optimised microwave acid digestion procedure on the same material. The optimal set of parameters - 30 min sonication at ambient temperature - was chosen, and then applied to other five sediment RMs from different origin. In this case four additional elements - As, Pb, V and Fe - were also determined and the results were compared with reference and microwave values. The results obtained by the ultrasound digestion procedure were higher than 80% of the reference and/or microwave values in 40 out of 44 cases. In any case, the results obtained by ultrasonic procedure were statistically comparable to reference values (mean of means of interlaboratory exercises or certified values) in the 84% of the cases.

Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalAnalytica Chimica Acta
Volume510
Issue number1
DOIs
Publication statusPublished - May 10 2004

Fingerprint

Microwaves
Ultrasonics
digestion
Digestion
Sediments
Metals
metal
Reference Values
sediment
acid digestion
Sonication
Temperature
Lakes
Baths
lacustrine deposit
temperature
Equipment and Supplies
Acids
evaluation
material

Keywords

  • Reference materials
  • Sediments
  • Total metal content
  • Ultrasonic digestion

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

Evaluation of an ultrasonic digestion procedure for total metal determination in sediment reference materials. / Brunori, Claudia; Ipolyi, I.; Macaluso, Laura; Morabito, Roberto.

In: Analytica Chimica Acta, Vol. 510, No. 1, 10.05.2004, p. 101-107.

Research output: Contribution to journalArticle

Brunori, Claudia ; Ipolyi, I. ; Macaluso, Laura ; Morabito, Roberto. / Evaluation of an ultrasonic digestion procedure for total metal determination in sediment reference materials. In: Analytica Chimica Acta. 2004 ; Vol. 510, No. 1. pp. 101-107.
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