Automated microprocessor-controlled atomic absorption analysis of natural water for arsenic and selenium

Technical Report · Tue Aug 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6823056· OSTI ID:6823056

Morrow, R. W.; Futrell, T. L.; Adams, T. T.

An automated, dual-channel atomic absorption spectrophotometer for the simultaneous determination of arsenic and selenium in natural water is now in operation. The instrument was constructed from commercially available optical components, spectral sources, and a sample changer. Automation was achieved by using an in-house-fabricated and programmed microprocessor. The instrument will analyze samples at a rate of 37 per hour, and a quantitative determination of arsenic and selenium to 0.2 ..mu..g/l (ppB) can be achieved. Arsenic can be determined with a precision of 19% at 1 ..mu..g/l and 6% at 10 ..mu..g/l, while selenium can be determined with a precision of 17% at 1 ..mu..g/l and 4% at 10 ..mu..g/l.

• Research Organization: Oak Ridge Y-12 Plant, TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6823056
• Report Number(s): Y-2124
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ABSORPTION SPECTROSCOPY
ARSENIC
AUTOMATION
CHEMICAL ANALYSIS
DESIGN
ELEMENTS
HYDROGEN COMPOUNDS
MEASURING INSTRUMENTS
OPERATION
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SELENIUM
SEMIMETALS
SPECTROPHOTOMETERS
SPECTROSCOPY
TRACE AMOUNTS
WATER