Determination of Iron, Cobalt, Nickel, and Copper in Hafnium Fluoride by GF-AAS

1993 ◽  
Vol 47 (2) ◽  
pp. 190-191 ◽  
Author(s):  
James Jaganathan ◽  
Ishwar Aggarwal
Keyword(s):  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Matrix Modifier ◽  
Average Precision ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Graphite Furnace Atomic Absorption ◽  
Gf Aas ◽  
Preconcentration Techniques

This paper describes an analytical method for the quantitation of iron, cobalt, nickel, and copper at trace levels with graphite furnace-atomic absorption spectrometry (GF-AAS) without the use of any matrix modifier or preconcentration techniques. A solution of HfF4 (10%, w/v) in HF (24%) was used for this study. The detection limits for iron, cobalt, nickel, and copper were found to be 3, 1, 3, and 2 ppb, respectively. The average precision of measurements (% RSD) for all the elements was <10%.

Graphite Furnace Atomic Absorption Spectrometric Determination of Iron, Cobalt, Nickel, and Copper at Parts-Per-Billion Level in High-Purity Lanthanum Fluoride

1993 ◽  
Vol 47 (8) ◽  
pp. 1169-1170 ◽  
Author(s):  
James Jaganathan ◽  
Ishwar Aggarwal
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Lanthanum Fluoride ◽  
Matrix Modifier ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric

This paper describes an analytical method for the quantitation of iron, cobalt, nickel, and copper in lanthanum fluoride at trace levels with graphite furnace atomic absorption spectrometry (GFAAS) without using any matrix modifier. These metals were preconcentrated in HNO3 and analyzed directly. The detection limits for iron, cobalt, nickel, and copper were found to be 3, 1, 2, and 2 ppb, respectively. The average precision of measurements (°/o RSD) for all the elements was <10%.

Determination of Cd and Cr in tannin samples by high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample sequential analysis (HR-CS SS-GF AAS)

2015 ◽  
Vol 7 (9) ◽  
pp. 3735-3741 ◽  
Author(s):  
Ariane V. Zmozinski ◽  
Tatiane Pretto ◽  
Aline R. Borges ◽  
Maria Goreti R. Vale
Keyword(s):  
Sequential Analysis ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Continuum Source ◽  
Sequential Determination ◽  
Graphite Furnace Atomic Absorption ◽  
Gf Aas ◽  
Reliable Analytical Method ◽  
Direct Solid

A fast and reliable analytical method for the sequential determination of Cd and Cr in tannin samples by HR-CS SS-GF AAS from the same sample aliquot is proposed.

scholarly journals Determination of Lead in Croatian Wines by Graphite Furnace Atomic Absorption Spectrometry

2011 ◽  
Vol 62 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Blanka Tariba ◽  
Alica Pizent ◽  
Zorana Kljaković-Gašpić
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Accurate Determination ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
White Wine ◽  
Matrix Modifier ◽  
Graphite Furnace Atomic Absorption

Determination of Lead in Croatian Wines by Graphite Furnace Atomic Absorption SpectrometryA method has been developed for direct determination of lead in wine by graphite furnace atomic absorption spectrometry (GFAAS) with Zeeman-effect background correction. The thermal behaviour of Pb during pyrolysis and atomisation stages was investigated without matrix modifier and in the presence of Pd(NO3)2, Pd(NO3)2+ Mg(NO3)2× 6H2O, and NH4H2PO4+ Mg(NO3)2× 6H2O as matrix modifiers. A simple 1:1 dilution of wine samples with Pd(NO3)2as a matrix modifier proved optimal for accurate determination of Pb in wine. Mean recoveries were 106 % for red and 114 % for white wine, and the detection limit was 3 μg L-1. Within-run precision of measurements for red and white wine was 2.1 % and 1.8 %, respectively. The proposed method was applied for analysis of 23 Croatian wines. Median Pb concentrations were 33 μg L-1, range (16 to 49) μg L-1in commercially available wines and 46 μg L-1, range (14 to 559) μg L-1in home-made wines. There were no statistically significant differences (P<0.05) in Pb concentration between commercial and home-made wines or between red and white wines.

Investigation of spectral interference in the determination of Pb in road dust using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis

2018 ◽  
Vol 33 (4) ◽  
pp. 593-602 ◽  
Author(s):  
Susane Schossler Fick ◽  
Flávio Venâncio Nakadi ◽  
Fabian Fujiwara ◽  
Patricia Smichowski ◽  
Maria Goreti R. Vale ◽  
...  
Keyword(s):  
Graphite Furnace ◽  
Road Dust ◽  
Absorption Spectrometry ◽  
Spectral Interference ◽  
Sample Analysis ◽  
Continuum Source ◽  
Graphite Furnace Atomic Absorption ◽  
Gf Aas ◽  
Direct Solid

Pb determination using HR-CS SS-GF AAS in road dust samples and evaluation of spectral interference.

Graphite Furnace Atomic Absorption Method for the Determination of Chromium in Foods and Biological Materials

1992 ◽  
Vol 75 (2) ◽  
pp. 354-359 ◽  
Author(s):  
N J . Miller Ihli ◽  
F E Greene
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Biological Materials ◽  
Food Samples ◽  
Magnesium Nitrate ◽  
Matrix Modifier ◽  
Graphite Furnace Atomic Absorption ◽  
Characteristic Mass

Abstract A method was developed for the determination of chromium in food samples and other biological materials. Samples are dry ashed In a muffle furnace and are analyzed by graphite furnace atomic absorption spectrometry. Magnesium nitrate is used as a matrix modifier, and samples are quantltated by platform atomizatlon and peak area measurements with direct calibration against aqueous standards. The detection limit (based on 3.29 σ) was 5.6 pg, or 0.28 μg/L for a 20 μL injection. The characteristic mass was 3.2 pg. This method was validated by analyzing a range of reference materials and was subsequently used for the analysis of a variety of food samples. A comparison of analytical results obtained from direct calibration and method of additions was made.

A novel extraction-based procedure for the determination of cadmium in marine macro-algae using HR-CS GF AAS

2017 ◽  
Vol 9 (36) ◽  
pp. 5400-5406 ◽  
Author(s):  
Mauana Schneider ◽  
Daiane P. C. de Quadros ◽  
Bernhard Welz ◽  
Eduardo Carasek ◽  
Duardo de Oliveira Bastos ◽  
...  
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Simple Method ◽  
Continuum Source ◽  
Graphite Furnace Atomic Absorption ◽  
Gf Aas ◽  
Macro Algae

This work proposes a simple method for the determination of Cd in macro-algae by high-resolution continuum source graphite furnace atomic absorption spectrometry.

An ionic liquid-based microextraction method for the determination of Cu and Ni in high-salinity produced water from offshore petroleum exploration by GF AAS

2015 ◽  
Vol 7 (16) ◽  
pp. 6848-6855 ◽  
Author(s):  
Graziela F. B. Cruz ◽  
Ricardo J. Cassella
Keyword(s):  
Ionic Liquid ◽  
Produced Water ◽  
High Salinity ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Petroleum Exploration ◽  
Graphite Furnace Atomic Absorption ◽  
Novel Method ◽  
Gf Aas

This work reports the development of a novel method for the ionic-liquid microextraction and determination of Cu and Ni in high-salinity produced water by Graphite Furnace Atomic Absorption Spectrometry (GF AAS).

Determination of manganese and nickel in slurry sampling by graphite furnace atomic absorption spectrometry

2008 ◽  
Vol 86 (4) ◽  
pp. 312-316 ◽  
Author(s):  
Luciano Almeida Pereira ◽  
Simone Soares de O. Borges ◽  
Maurício Costa Castro ◽  
Waldomiro Borges Neto ◽  
Cláudia Carvalhinho Windmöller ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Marine Sediment ◽  
Graphite Furnace ◽  
Correlation Coefficients ◽  
Absorption Spectrometry ◽  
Graphite Furnace Atomic Absorption ◽  
Four Levels ◽  
Gf Aas

Methods for the determination of manganese and nickel in lake and marine sediment slurries by graphite furnace atomic absorption spectrometry using permanent modifiers are proposed. The slurries were maintained homogeneous with air bubbling with an aquarium pump. For manganese, the best modifier was ruthenium permanent with mo of 0.9 pg and of 1.0, 1.2, 1.5, and 1.8 pg, for Rh, without modifier, Ir, and Zr, respectively. For nickel, the best modifier was rhodium permanent with mo of 33 pg, followed by 85, 120, 132, and 240 pg, without modifier, Zr, Ir, and Ru, respectively. After determining manganese and nickel in two certified marine sediment samples (n = 10) from NRCC, PACS-2, and MESS-2, and in the San Joaquin 2079 soil, the results agreed at the confidence level of 95% with the certified value for all analytes studied using aqueous calibration. Calibration curves of all analytes had correlation coefficients R2 higher than 0.99. Recovery studies made in four levels for each analyte in sediments from Lake Pampulha showed acceptable values. The limits of detection (LODs) were 4.0 and 0.9 µg L-1 for manganese and nickel, respectively.Key words: manganse, nickel, sediments, GF AAS.

Sign in / Sign up

Export Citation Format

Share Document