Extraction of arsenic(III) and arsenic(V) from natural waters for neutron activation analysis

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00292a026· OSTI ID:6307683

Mok, W M; Shah, N K; Wai, C M

Quantification and speciation of arsenic(III) and arsenic(V) in natural waters can be achieved by extracting the former species with pyrrolidinecarbodithioate at pH 1-1.5 into chloroform followed by a nitric acid back extraction for neutron activation analysis (NAA). Besides eliminating interferences from matrix species in natural waters, the two-step extraction procedure also provides a large preconcentration factor for arsenic. Detection of 10/sup -2/ ..mu..g/L of arsenic can be achieved by using this extraction method and NAA. Applications of this method to arsenic speciation studies in natural water systems are discussed.

• Research Organization: Univ. of Idaho, Moscow
• OSTI ID: 6307683
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:1; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
400105 -- Separation Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATION ANALYSIS
ARSENIC COMPOUNDS
BARYON REACTIONS
CATIONS
CHARGED PARTICLES
CHEMICAL ANALYSIS
DATA
EXPERIMENTAL DATA
EXTRACTION
FRESH WATER
HADRON REACTIONS
HYDROGEN COMPOUNDS
INFORMATION
IONS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLVENT EXTRACTION
TRACE AMOUNTS
WATER