Atomic absorption spectrophotometric determination of arsenic and selenium in water by hydride generation

Journal Article · Thu Jan 01 04:00:00 EST 1976 · At. Absorpt. Newsl.; (United States)

OSTI ID:5447649

Corbin, D R; Barnard, W M

As and Se are reduced and converted to their hydrides by an aqueous solution of sodium borohydride injected into an acidified sample contained in a reaction vessel by use of a syringe; the hydride is immediately transferred by nitrogen, without collection in a reservoir, to the atomizer of an atomic absorption spectrophotometer and burned in a hydrogen flame, and the absorption signal is recorded. The method may be used to analyze solutions containing as little as 0.01 ..mu..g/l As or Se. To determine total inorganic and organic forms, the organic compounds must be decomposed by an appropriate acid digestion prior to analysis; if the digestion is omitted, only inorganic As and Se are determined. The volatilization of the As and Se leaves behind many potentially interferring substances.

• Research Organization: State Univ. of New York Coll., Fredonia, NY
• OSTI ID: 5447649
• Journal Information: At. Absorpt. Newsl.; (United States), Journal Name: At. Absorpt. Newsl.; (United States) Vol. 15:5; ISSN AABNA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ABSORPTION SPECTROSCOPY
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
ARSENIC
BOROHYDRIDES
BORON COMPOUNDS
CHEMICAL ANALYSIS
DISPERSIONS
ELEMENTS
HYDROGEN COMPOUNDS
MIXTURES
OXYGEN COMPOUNDS
SELENIUM
SEMIMETALS
SODIUM COMPOUNDS
SOLUTIONS
SPECTROSCOPY
WATER