Effect of bentonites on fluorometric selenium determination

Journal Article · Thu Jan 01 00:00:00 EST 1981 · J. Assoc. Off. Anal. Chem.; (United States)

OSTI ID:5553661

Olson, O E; Herr, A A; Palmer, I S

Bentonites in feeds cause error in the analysis for Se by the AOAC (3.097-3.101) fluorometric method for Se in plants. The error apparently results from the binding of the piazselenol by insoluble residue from the bentonite. This effect is avoided by diluting digests to volume after reduction with HCl, centrifuging or allowing to stand, and analyzing a portion of the clear supernatant liquid. Insoluble residues present after digestion of plant materials do not appear to cause a similar error.

• Research Organization: South Dakota State University, Chemistry Department, Brookings
• OSTI ID: 5553661
• Journal Information: J. Assoc. Off. Anal. Chem.; (United States), Vol. 64:5
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANIMAL FEEDS
CONTAMINATION
BENTONITE
CHEMISTRY
SELENIUM
QUANTITATIVE CHEMICAL ANALYSIS
FLUORESCENCE
PLANTS
CHEMICAL ANALYSIS
CLAYS
ELEMENTS
FOOD
LUMINESCENCE
SEMIMETALS
400102* - Chemical & Spectral Procedures