Atomic Absorption Methods for Analysis of Soil Extracts and Plant Tissue Digests

1980 ◽  
Vol 63 (4) ◽  
pp. 788-796
Author(s):  
Robert A Isaac
Keyword(s):  
Atomic Absorption ◽  
Flame Temperature ◽  
Plant Tissues ◽  
Acid Dissolution ◽  
Soil Extracts ◽  
Flame Emission ◽  
Dry Ashing ◽  
Temperature Requirements ◽  
Extractable Cations ◽  
Basic Equipment

Abstract The principles of operation and basic equipment of atomic absorption spectroscopy are described. Its advantages over flame emission include higher specificity, fewer interferences, improved detection limits, lower flame temperature requirements, and simpler instrumentation. Analysis procedures which have proved successful in our laboratories are detailed. They include dry ashing and wet digestion for analysis of plant tissues, and exchangeable cations, extractable cations, and acid dissolution for soils analysis.

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

1996 ◽  
Vol 68 (12) ◽  
pp. 231-256 ◽  
Author(s):  
Kenneth W. Jackson ◽  
Guoru Chen
Keyword(s):  
Atomic Absorption ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Flame Emission

Interlaboratory comparisons of nickel analyses in urine by atomic absorption spectrometry.

1978 ◽  
Vol 24 (6) ◽  
pp. 862-867 ◽  
Author(s):  
D B Adams ◽  
S S Brown ◽  
F W Sunderman ◽  
H Zachariasen
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Analytical Techniques ◽  
Absorption Spectrometry ◽  
Direct Analysis ◽  
Urine Samples ◽  
Analytical Sensitivity ◽  
Flameless Atomic Absorption ◽  
Dry Ashing ◽  
Flameless Atomic Absorption Spectrometry

Abstract Two interlaboratory surveys of urine nickel analyses were performed in which eight or nine urine samples were distributed to laboratories in seven nations for measurements of nickel concentrations by atomic absorption spectrometry. In both surveys, wide discrepancies were observed in the values for urine nickel concentrations that were obtained in different laboratories by various analytical methods. This finding documents a serious need for improvement in the proficiency of nickel analyses. Nonetheless, excellent interlaboratory concordance was found in the rankings of urine samples in order of increasing nickel concentrations. Analytical techniques that involved preliminary wet or dry ashing and extration steps before flameless atomic absorption spectrometry were generally superior to techniques for direct analysis of urine by flameless atomic absorption spectrometry in respect to (a) analytical sensitivity, (b) recovery of added nickel, (c) interlaboratory precision, and (d) interlaboratory concordance of ranking of urine samples in order of increasing nickel concentrations.

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