Spectrophotometric microdetermination of alkaline earth and lanthanide elements with hydroxy naphthol blue and ethylenediaminetetaacetic acid

Journal Article · Wed Jun 01 00:00:00 EDT 1977 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50015a025· OSTI ID:7213347

Brittain, H G

A new spectrophotometric reagent for the quick and easy determination of alkaline earth and lanthanide elements is described. These elements may be determined using a reagent composed of 0.001 M hydroxy naphthol blue (HNB) and 0.01 M EDTA, in either phosphate or acetate buffer that has been adjusted to a pH of 6. At low metal concentrations, linear relationships between HNB absorbance and metal ion concentrations are observed for alkaline earth and most lanthanide elements. The sensitivity is metal dependent, but ranges from 1.6 ..mu..g/mL for Sm/sup 3 +/ to 19.5 ..mu..g/mL for Dy/sup 3 +/.

• Research Organization: Ferrum Coll., VA
• OSTI ID: 7213347
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 49:7; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ABSORPTION SPECTROSCOPY
ACETATES
ALKALINE EARTH METALS
BUFFERS
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
ELEMENTS
INDICATORS
METALS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RARE EARTHS
SENSITIVITY
SPECTROSCOPY