Increasing the sensitivity of atomic-absorption measurements with pulsed evaporation from a microprobe into the flame

1972 ◽  
Vol 16 (5) ◽  
pp. 677-678
Author(s):  
E. D. Prudnikov
Keyword(s):  
Atomic Absorption ◽  
Absorption Measurements

Study of the width of the mercury line at ?=253.7 nm in a light source for atomic-absorption measurements

1977 ◽  
Vol 27 (3) ◽  
pp. 1214-1214 ◽  
Author(s):  
�. L. Al'tman ◽  
A. A. Ganeev ◽  
Yu. I. T�rkin ◽  
S. E. Sholupov
Keyword(s):  
Atomic Absorption ◽  
Light Source ◽  
Absorption Measurements

Distribution of Lead in Human Bone: I. Atomic Absorption Measurements

1990 ◽  
pp. 267-274 ◽  
Author(s):  
H. Hu ◽  
T. Tosteson ◽  
A. C. Aufderheide ◽  
L. Wittmers ◽  
D. E. Burger ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Human Bone ◽  
Absorption Measurements

Quantitative Determination of Cadmium in Water-Soluble Color Additives by Atomic Absorption Spectroscopy

1972 ◽  
Vol 55 (5) ◽  
pp. 1145-1149
Author(s):  
Lueangier Moten
Keyword(s):  
Aqueous Solutions ◽  
Quantitative Determination ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Quantitative Method ◽  
Water Soluble ◽  
Low Levels ◽  
Absorption Measurements

Abstract A quantitative method is presented for the determination of cadmium at low levels (5–20 ppm) in water-soluble color additives by atomic absorption spectroscopy. Absorption measurements were made on aqueous solutions of typical color additives to which known amounts of cadmium had been added. The method requires no pretreatment of sample and should be applicable to all water-soluble color additives.

Collaborative Study of a Zincon Ion Exchange Method for the Quantitative Determination of Zinc in Fertilizers

1971 ◽  
Vol 54 (4) ◽  
pp. 790-795
Author(s):  
C E Jones ◽  
L E Pracht
Keyword(s):  
Ion Exchange ◽  
Quantitative Determination ◽  
Atomic Absorption ◽  
Reference Data ◽  
Collaborative Study ◽  
Present Form ◽  
Exchange Method ◽  
Ion Exchange Method ◽  
Absorption Measurements

Abstract This collaborative study represents an attempt to validate the ion exchange zincon method for the quantitative determination of zinc in fertilizers. The values of the standard deviations Sd, Sr, and Sb and the results of the F- and t-tests are presented as an estimate of the precision, accuracy, and dependability. Atomic absorption measurements were also made and provided reference data for evaluation purposes. In its present form, the method falls short of expectations as an alternative wet approach to the dithizone method. It is recommended that the methods for determining zinc in fertilizers be studied further.

Allowance for nonselective spectral noise in atomic absorption measurements using a graphite cell

1968 ◽  
Vol 8 (2) ◽  
pp. 124-127
Author(s):  
B. V. L'vov ◽  
M. A. Kabanova ◽  
D. A. Katskov ◽  
G. G. Lebedev ◽  
M. A. Sokolov
Keyword(s):  
Atomic Absorption ◽  
Graphite Cell ◽  
Absorption Measurements

Construction and Evaluation of a Versatile Graphite Filament Atomizer for Atomic Absorption Spectrometry

1972 ◽  
Vol 26 (6) ◽  
pp. 606-611 ◽  
Author(s):  
C. J. Molnar ◽  
R. D. Reeves ◽  
J. D. Winefordner ◽  
M. T. Glenn ◽  
J. R. Ahlstrom ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Air Entrainment ◽  
Absorption Spectrometry ◽  
Ambient Air ◽  
Atomic Fluorescence ◽  
Fluorescence Studies ◽  
Absorption Studies ◽  
Entrained Air ◽  
Graphite Rod ◽  
Absorption Measurements

A simple, versatile atomizer of the electrically heated graphite rod type is described and used for atomic absorption studies. The atomizer utilizes a burner head (directly under the rod) to produce a H2-Ar-entrained air flame; the flame is primarily useful in minimizing ambient air entrainment in order to maintain a highly reducing environment directly above the rod where atomic absorption measurements are generally taken. Temperature profiles of the H2-Ar-entrained air flames and also the temperatures of the graphite rod at various currents were measured, and appropriate plots are given. Several types of graphite and several different ways of holding liquid samples on the atomizer were also compared. Detection limits and analytical curves of aqueous solutions of Ag, As, Au, Cr, Cu, Fe, Mg, Ni, and Pb and oil-based solutions of Ag, Cu, and Fe are given. This atomizer should be of even greater use for atomic fluorescence studies.

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