Flow injection determination of sodium, potassium, calcium, and magnesium in beer by flame emission and atomic absorption spectrometry

• Type: Article in International Scientific Journal
• Date: 1997

Authors

Fernandes, SMV (Author) Other; Rangel, AOSS (Author) Other; Lima, JLFC (Author) FFUP

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 45

Pages: 1269-1272

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-001-BQ0

DOI: 10.1021/jf9604347

Abstract (EN): Flow injection systems for the determination of sodium and potassium, by flame emission photometry, and calcium and magnesium, by atomic absorption spectrometry, in beer are described. The samples were directly injected in the flow system where automatic dilution occurred, and reagent addition using the merging zones technique was performed. Lanthanum(III) consumption was reduced in about 20-80-fold compared to conventional manual atomic absorption determinations. Sampling rates of 120-200 determinations/h were achieved. The results were in agreement with the reference procedures (relative deviations below 3.8%) and present good reproducibility (relative standard deviations lower than 1.6% for 10 consecutive measurements).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4