Radiotracer investigation of the interference of hydrofluoric acid in the determination of arsenic and antimony by hydride generation atomic absorption spectrometry

Journal Article · Thu Oct 15 00:00:00 EDT 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00147a008· OSTI ID:5920698

Petrick, K; Krivan, V

The influence of hydrofluorica acid on the behavior of arsenic and antimony in hydride generation with NaBH/sub 4/ was investigated by means of the radiotracers /sup 76/As and /sup 124/Sb. Simultaneously, the corresponding extinctions were measured. Up to a concentration of 1% hydrofluoric acid present in hydrochloric acid sample solutions does not affect the hydrogenation of As(III) and Sb(III). In solutions with higher HF concentration, As(V) forms (AsF/sub 5/OH)/sup -/ ions which do not react with NaBH/sub 4/. After the (AsF/sub 4/OH)/sup -/ ions are hydrolyzed, the interference of hydrofluoric acid can be sufficiently reduced by complex formation with boric acid. Antimony(V) is not hydrogenated in the presence of hydrofluoric acid, which, in addition, seriously hinders the reduction of Sb(V) to Sb(III). Improved procedures are proposed which allow the elimination of the interference of hydrofluoric acid in both the hydrogenation and the absorption measurement stages and also in the reduction of Sb(V) to Sb(III) in this medium.

• Research Organization: Universitaet Ulm, West Germany
• OSTI ID: 5920698
• Journal Information: Anal. Chem.; (United States), Vol. 59:20
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIMONY
ABSORPTION SPECTROSCOPY
CHEMICAL REACTIONS
ANTIMONY 124
RADIONUCLIDE KINETICS
ARSENIC
ARSENIC 76
BORIC ACID
HYDROFLUORIC ACID
EXPERIMENTAL DATA
HYDRIDES
INTERFERING ELEMENTS
LABELLED COMPOUNDS
TRACER TECHNIQUES
ANTIMONY ISOTOPES
ARSENIC ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
ELEMENTS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
METALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
RADIOISOTOPES
SEMIMETALS
SPECTROSCOPY
400101* - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400201 - Chemical & Physicochemical Properties
400102 - Chemical & Spectral Procedures