Pressure-assisted chelating extraction as a teaching tool in instrumental analysis

Omowunmi A. Sadik, Adam K. Wanekaya, Gelfand Yevgeny

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A novel instrumental-digestion technique using pressure-assisted chelating extraction (PACE) was adopted for an undergraduate laboratory at SUNY-Binghamton. The students were introduced to the basic concepts followed by sample extraction using a Dionex ASE 200. Extracts were analyzed using flame atomic absorption spectroscopy (FAAS). Results were correlated with conventional wet acid-digestion techniques using standard reference materials. Better recoveries with a higher precision were obtained using PACE, indicating the possibility of obtaining accurate and precise results from the analysis of heavy metals in solid samples safely without the use of concentrated acids and strong oxidizing agents.

Original languageEnglish (US)
Pages (from-to)1177-1181
Number of pages5
JournalJournal of Chemical Education
Issue number8
StatePublished - Aug 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Education


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