Determination of Cd and Pb in biological reference materials by electrothermal atomic absorption spectrometry

A comparison of three ultrasonic-based sample treatment procedures

C. Maduro, G. Vale, S. Alves, M. Galesio, M. D.R.Gomes Da Silva, C. Fernandez, S. Catarino, M. G. Rivas, A. M. Mota, J. L. Capelo

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Three different ultrasonic-based sample treatment approaches, the automated ultrasonic slurry sampling, the ultrasonic assisted acid solid-liquid extraction (ASLE) and the enzymatic probe sonication (EPS) were compared and discussed for the determination of Cd and Pb by ET-AAS in biological reference materials. The sample mass chosen to perform the analysis was 10 mg and the liquid volume was 1 ml of nitric acid 1 M. The best results were obtained with the slurry procedure with which it was possible accurate and precise determination of the Cd and Pb content in four of the five reference materials studied. Optimum performance (total metal extraction) of ASLE assisted by ultrasound for Cd was only achieved in two of the four materials assessed whereas total Pb recovery was only possible in three of the five samples. Total extraction with the enzymatic probe sonication was only obtained for Cd in oyster tissue. Neither ASLE nor EPS were able to extract Cd or Pb from spruce needles. Pb concentration obtained after EPS was found to be highly dependent from sample centrifugation speed and time.

Original languageEnglish (US)
Pages (from-to)1156-1161
Number of pages6
JournalTalanta
Volume68
Issue number4
DOIs
StatePublished - Feb 15 2006

Fingerprint

Atomic absorption spectrometry
Sonication
Ultrasonics
Spectrum Analysis
Acids
Liquids
Nitric Acid
Ostreidae
Centrifugation
Needles
Metals
Tissue
Sampling
Recovery

Keywords

  • Acid leaching
  • Enzymatic probe sonication
  • ET-AAS
  • Microwave digestion
  • Ultrasonic treatment

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Determination of Cd and Pb in biological reference materials by electrothermal atomic absorption spectrometry : A comparison of three ultrasonic-based sample treatment procedures. / Maduro, C.; Vale, G.; Alves, S.; Galesio, M.; Da Silva, M. D.R.Gomes; Fernandez, C.; Catarino, S.; Rivas, M. G.; Mota, A. M.; Capelo, J. L.

In: Talanta, Vol. 68, No. 4, 15.02.2006, p. 1156-1161.

Research output: Contribution to journalArticle

Maduro, C. ; Vale, G. ; Alves, S. ; Galesio, M. ; Da Silva, M. D.R.Gomes ; Fernandez, C. ; Catarino, S. ; Rivas, M. G. ; Mota, A. M. ; Capelo, J. L. / Determination of Cd and Pb in biological reference materials by electrothermal atomic absorption spectrometry : A comparison of three ultrasonic-based sample treatment procedures. In: Talanta. 2006 ; Vol. 68, No. 4. pp. 1156-1161.
@article{6766f9e4c05d4b8a9ff0c9c0d1f52747,
title = "Determination of Cd and Pb in biological reference materials by electrothermal atomic absorption spectrometry: A comparison of three ultrasonic-based sample treatment procedures",
abstract = "Three different ultrasonic-based sample treatment approaches, the automated ultrasonic slurry sampling, the ultrasonic assisted acid solid-liquid extraction (ASLE) and the enzymatic probe sonication (EPS) were compared and discussed for the determination of Cd and Pb by ET-AAS in biological reference materials. The sample mass chosen to perform the analysis was 10 mg and the liquid volume was 1 ml of nitric acid 1 M. The best results were obtained with the slurry procedure with which it was possible accurate and precise determination of the Cd and Pb content in four of the five reference materials studied. Optimum performance (total metal extraction) of ASLE assisted by ultrasound for Cd was only achieved in two of the four materials assessed whereas total Pb recovery was only possible in three of the five samples. Total extraction with the enzymatic probe sonication was only obtained for Cd in oyster tissue. Neither ASLE nor EPS were able to extract Cd or Pb from spruce needles. Pb concentration obtained after EPS was found to be highly dependent from sample centrifugation speed and time.",
keywords = "Acid leaching, Enzymatic probe sonication, ET-AAS, Microwave digestion, Ultrasonic treatment",
author = "C. Maduro and G. Vale and S. Alves and M. Galesio and {Da Silva}, {M. D.R.Gomes} and C. Fernandez and S. Catarino and Rivas, {M. G.} and Mota, {A. M.} and Capelo, {J. L.}",
year = "2006",
month = "2",
day = "15",
doi = "10.1016/j.talanta.2005.07.020",
language = "English (US)",
volume = "68",
pages = "1156--1161",
journal = "Talanta",
issn = "0039-9140",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Determination of Cd and Pb in biological reference materials by electrothermal atomic absorption spectrometry

T2 - A comparison of three ultrasonic-based sample treatment procedures

AU - Maduro, C.

AU - Vale, G.

AU - Alves, S.

AU - Galesio, M.

AU - Da Silva, M. D.R.Gomes

AU - Fernandez, C.

AU - Catarino, S.

AU - Rivas, M. G.

AU - Mota, A. M.

AU - Capelo, J. L.

PY - 2006/2/15

Y1 - 2006/2/15

N2 - Three different ultrasonic-based sample treatment approaches, the automated ultrasonic slurry sampling, the ultrasonic assisted acid solid-liquid extraction (ASLE) and the enzymatic probe sonication (EPS) were compared and discussed for the determination of Cd and Pb by ET-AAS in biological reference materials. The sample mass chosen to perform the analysis was 10 mg and the liquid volume was 1 ml of nitric acid 1 M. The best results were obtained with the slurry procedure with which it was possible accurate and precise determination of the Cd and Pb content in four of the five reference materials studied. Optimum performance (total metal extraction) of ASLE assisted by ultrasound for Cd was only achieved in two of the four materials assessed whereas total Pb recovery was only possible in three of the five samples. Total extraction with the enzymatic probe sonication was only obtained for Cd in oyster tissue. Neither ASLE nor EPS were able to extract Cd or Pb from spruce needles. Pb concentration obtained after EPS was found to be highly dependent from sample centrifugation speed and time.

AB - Three different ultrasonic-based sample treatment approaches, the automated ultrasonic slurry sampling, the ultrasonic assisted acid solid-liquid extraction (ASLE) and the enzymatic probe sonication (EPS) were compared and discussed for the determination of Cd and Pb by ET-AAS in biological reference materials. The sample mass chosen to perform the analysis was 10 mg and the liquid volume was 1 ml of nitric acid 1 M. The best results were obtained with the slurry procedure with which it was possible accurate and precise determination of the Cd and Pb content in four of the five reference materials studied. Optimum performance (total metal extraction) of ASLE assisted by ultrasound for Cd was only achieved in two of the four materials assessed whereas total Pb recovery was only possible in three of the five samples. Total extraction with the enzymatic probe sonication was only obtained for Cd in oyster tissue. Neither ASLE nor EPS were able to extract Cd or Pb from spruce needles. Pb concentration obtained after EPS was found to be highly dependent from sample centrifugation speed and time.

KW - Acid leaching

KW - Enzymatic probe sonication

KW - ET-AAS

KW - Microwave digestion

KW - Ultrasonic treatment

UR - http://www.scopus.com/inward/record.url?scp=30644476747&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=30644476747&partnerID=8YFLogxK

U2 - 10.1016/j.talanta.2005.07.020

DO - 10.1016/j.talanta.2005.07.020

M3 - Article

VL - 68

SP - 1156

EP - 1161

JO - Talanta

JF - Talanta

SN - 0039-9140

IS - 4

ER -