Sequential determination of arsenic, selenium, antimony, and tellurium in foods via rapid hydride evolution and atomic absorption spectrometry

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Analytical Chemistry

DOI:https://doi.org/10.1021/ac60365a061· OSTI ID:4076579

Fiorino, John A.; Jones, John W.; Capar, Stephen G.

Analysis of acid digests of foods for As, Se, Sb, and Te was semiautomated. Hydrides generated by controlled addition of base stabilized NaBH₄ solution to acid digests are transported directly into a shielded, hydrogen (nitrogen diluted), entrained-air flame for atomic absorption spectrophotometric determination of the individual elements. The detection limits, based on 1 g of digested sample, are approximately 10 to 20 ng/g for all four elements. Measurement precision is 1 to 2 percent relative standard deviation for each element measured at 0.10 $mu$g. A comparison is made of results of analysis of lyophilized fish tissues for As and Se by instrumental neutron activation (INAA), hydride generation with atomic absorption spectrometry, fluorometry, and spectrophotometry. NBS standard reference materials (orchard leaves and bovine liver) analyzed for As, Se, and Sb by this method show excellent agreement with certified values and with independent NAA values. (auth)

• Research Organization: Food and Drug Administration, Washington, DC
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-016614
• OSTI ID: 4076579
• Journal Information: Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 1 Vol. 48; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

*ANTIMONY-- ABSORPTION SPECTROSCOPY
*ARSENIC-- ABSORPTION SPECTROSCOPY
*FOOD-- CHEMICAL ANALYSIS
*SELENIUM-- ABSORPTION SPECTROSCOPY
*TELLURIUM-- ABSORPTION SPECTROSCOPY
400104* --Chemistry--Analytical & Separations Chemistry-- Spectral Procedures
ACTIVATION ANALYSIS
BORON HYDRIDES
COMPARATIVE EVALUATIONS
ERRORS
FLUORESCENCE SPECTROSCOPY
N40120* --Chemistry--Analytical & Separations Chemistry-- Chemical & Spectral Procedures
SODIUM HYDRIDES
SPECTROPHOTOMETRY
STANDARDS