Mechanisms of atomization of lead from nitric acid, hydrochloric acid and sodium chloride matrices in atomic absorption spectrometry using a graphite probe furnace

1993 ◽  
Vol 8 (4) ◽  
pp. 623 ◽  
Author(s):  
Glen F. R. Gilchrist ◽  
Chuni L. Chakrabarti ◽  
Jianguo Cheng ◽  
Dianne M. Hughes
Keyword(s):  
Nitric Acid ◽  
Sodium Chloride ◽  
Hydrochloric Acid ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry

Zinc determined in 10-microL serum or urine samples by flameless atomic absorption spectrometry.

1981 ◽  
Vol 27 (1) ◽  
pp. 73-77 ◽  
Author(s):  
N E Vieira ◽  
J W Hansen
Keyword(s):  
Nitric Acid ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Repeated Measurements ◽  
Spectrometric Method ◽  
Flameless Atomic Absorption ◽  
Standard Curve ◽  
Flame Atomic Absorption ◽  
Calibration Algorithm

Abstract We describe a precise flameless atomic absorption spectrometric method requiring only 10 microL of sample, which thus permits repeated measurements in the neonate. Standard curves covering the range of 0 to 30 mg of zinc per liter, with standards in various matrixes (albumin, glycerol, serum, or nitric acid) had slopes ranging from 0.49 to 1.17, relative to that for aqueous standards. We prepared low-zinc matrixes, which had slopes similar to that of serum, by dialyzing serum or a 50 g/L solution of albumin vs a buffered zinc-free dialysis fluid containing appropriate inorganic constituents. Use of thoroughly de-ionized water, reagent-grade chemicals, "ultrapure" nitric acid, specified disposable plastic ware, and appropriate pipet tip-rinsing techniques minimized extraneous contamination with zinc. Concentrations of zinc in serum calculated from a "rational-method" calibration algorithm fit to the standard curve agreed well with independent determinations by flame atomic absorption spectrometry.

The Effects of Acidic Medium on the Sodium Contents Determination by FAAS

2020 ◽  
Vol 1001 ◽  
pp. 139-144
Author(s):  
Ying Li ◽  
Ben Tao Li ◽  
Guang Yu Sun ◽  
Hui Huang ◽  
Chen Gong ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Hydrochloric Acid ◽  
Atomic Absorption Spectrometry ◽  
Flame Atomic Absorption Spectrometry ◽  
Perchloric Acid ◽  
Acidic Medium ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Acid Effect

The influence of different acidic medium, including hydrochloric acid, nitric acid and perchloric acid on the absorbance of sodium by flame atomic absorption spectrometry was studied. The results showed that the effects of acidic medium and water on the determination of sodium were as follows: hydrochloric acid > perchloric acid > nitric acid > water. Acid effect changed with the increase of acid concentration, however, the absorbance value of sodium element decreased when the concentration of acid was higher than 1%~2%. This effect was more obvious for high content of sodium. The detection limits, repeatability and recovery of the samples under the three acidic medium were compared. The optimum acid conditions were determined and the sensitivity of the method was improved.

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