Precision of flame atomic absorption measurements of arsenic, cadmium, calcium, copper, iron, magnesium, molybdenum, sodium, and zinc

Journal Article · Fri Apr 01 04:00:00 EST 1977 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50012a017· OSTI ID:7305457

Bower, N W; Ingle, Jr, J D

Procedures for evaluating the precision of atomic absorption measurements have been improved and applied to 8 elements. Measurements on a Varian AA-6 spectrophotometer indicate that there are many similarities in the precision characteristics of different elements. For instance, analyte absorption flicker noise limits the measurement precision of most elements at moderate absorbances. The actual value of the measurement precision at a given absorbance and the dependence of measurement precision on absorbance depend upon the calibration curve, the wavelength of analysis, the integration time, and the type of flame employed.

• Research Organization: Oregon State Univ., Corvallis
• OSTI ID: 7305457
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 49:4; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ABSORPTION SPECTROSCOPY
ALKALI METALS
ALKALINE EARTH METALS
ARSENIC
BACKGROUND NOISE
CADMIUM
CALCIUM
COPPER
DESIGN
ELEMENTS
IRON
MAGNESIUM
METALS
MOLYBDENUM
NOISE
OPTIMIZATION
REFRACTORY METALS
SEMIMETALS
SODIUM
SPECTROSCOPY
TRANSITION ELEMENTS
ZINC