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ERIC Number: EJ927038
Record Type: Journal
Publication Date: 2011-Apr
Pages: 4
Abstractor: As Provided
Reference Count: 16
ISSN: ISSN-0021-9584
Quantitative Ultrasound-Assisted Extraction for Trace-Metal Determination: An Experiment for Analytical Chemistry
Lavilla, Isela; Costas, Marta; Pena-Pereira, Francisco; Gil, Sandra; Bendicho, Carlos
Journal of Chemical Education, v88 n4 p480-483 Apr 2011
Ultrasound-assisted extraction (UAE) is introduced to upper-level analytical chemistry students as a simple strategy focused on sample preparation for trace-metal determination in biological tissues. Nickel extraction in seafood samples and quantification by electrothermal atomic absorption spectrometry (ETAAS) are carried out by a team of four students. The experiment covers (i) the study of variables influencing the extraction process (sonication time, ultrasound amplitude, acid concentration, particle size, and sample mass) and the selection of optimal conditions; (ii) the determination of analytical characteristics and method validation using certified reference materials; and (iii) the analysis of seafood samples (i.e., mussels, prawns, hake, and sole). (Contains 1 table and 3 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A