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), Vol. 49:7
• Country of Publication: United States
• Language: English

Related Subjects

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