Determination of traces of vanadium with 5-bromosalicylhydroxamic acid by solid-phase spectrophotometry

Journal Article · Sun Dec 01 04:00:00 EST 1991 · Analytical Letters; (United States)

DOI:https://doi.org/10.1080/00032719108053049· OSTI ID:7115585

Pascual-Reguera, M I; Molina-Diaz, A; Ramos-Martos, N ^[1]; Capitan-Vallvey, L F ^[2]

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1. Univ. of Granada, Jaen (Spain)
2. Univ. of Granada (Spain)

A microdetermination method at {mu}g.1{sup {minus}1} levels for vanadium by solid-phase spectrophotometry has been developed. 5-Bromosalicylhydroxamic acid was used as chromogenic reagent to form a 1:2 violet complex which is easily sorbed and concentrated on a dextran-type anion-exchange resin. The resin-phase absorbances at 560 and 850 nm were measured directly. Vanadium can be determined in the 5-60 {mu}g.1{sup {minus}1} range with a RSD of 4.3%. The method is applied to the determination of vanadium in petroleum crudes and natural water samples.

• OSTI ID: 7115585
• Journal Information: Analytical Letters; (United States), Journal Name: Analytical Letters; (United States) Vol. 24:12; ISSN ANALB; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
54 ENVIRONMENTAL SCIENCES
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ABSORPTION SPECTROSCOPY
AMINES
CHEMICAL ANALYSIS
COMPLEXES
DATA
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXAMIC ACIDS
HYDROXY COMPOUNDS
INFORMATION
ION EXCHANGE
MICROANALYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
RADIATIONS
SOLIDS
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES
VANADIUM COMPLEXES
VISIBLE RADIATION
WATER