scholarly journals Multivariate optimization of ultrasound-assisted extraction using Doehlert matrix for simultaneous determination of Fe and Ni in vegetable oils by high-resolution continuum source graphite furnace atomic absorption spectrometry

2019 ◽  
Vol 273 ◽  
pp. 130-135 ◽  
Author(s):  
Jorge S. Almeida ◽  
Gabriel L. Santos ◽  
Geovani C. Brandão ◽  
Maria G.A. Korn ◽  
Leonardo S.G. Teixeira
Keyword(s):  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Multivariate Optimization ◽  
Ultrasound Assisted Extraction ◽  
Continuum Source ◽  
Assisted Extraction ◽  
Graphite Furnace Atomic Absorption ◽  
Doehlert Matrix ◽  
Ultrasound Assisted

Multivariate optimization of an ultrasound-assisted extraction procedure for the determination of Cu, Fe, Mn, and Zn in plant samples by flame atomic absorption spectrometry

2020 ◽  
Vol 12 (19) ◽  
pp. 2509-2516 ◽  
Author(s):  
Floriatan Santos Costa ◽  
Raquel Viana Pinto Leal ◽  
Clissiane Soares Viana Pacheco ◽  
Fábio Alan Carqueija Amorim ◽  
Raildo Mota de Jesus ◽  
...  
Keyword(s):  
Flame Atomic Absorption Spectrometry ◽  
Extraction Method ◽  
Extraction Procedure ◽  
Absorption Spectrometry ◽  
Multivariate Optimization ◽  
Ultrasound Assisted Extraction ◽  
Flame Atomic Absorption ◽  
Assisted Extraction ◽  
Ultrasound Assisted

A new ultrasound-assisted extraction method simple and fast was developed employing multivariate optimization.

Optimization of Ultrasound-Assisted Extraction of Cr, Cu, Zn, Cd, and Pb from Sediment, Followed by FAAS and GFAAS Analysis

2016 ◽  
Vol 99 (1) ◽  
pp. 252-259 ◽  
Author(s):  
Aparecida M S Mimura ◽  
Marcone A L Oliveira ◽  
Virginia S T Ciminelli ◽  
Julio C J Silva
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Matrix Effects ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Ultrasound Assisted Extraction ◽  
Flame Atomic Absorption ◽  
Assisted Extraction ◽  
Graphite Furnace Atomic Absorption ◽  
Standard Additions

Abstract An ultrasound method for simultaneous extraction of Cr, Cu, Zn, Cd, and Pb from sediment, and determination by flame atomic absorption spectrometry (FAAS) and graphite furnace atomic absorption spectrometry (GFAAS) was proposed. The experimental results obtained using analytical curves and the method of standard additions agreed at a confidence level of 95% for all the analytes, as determined by FAAS and GFAAS, indicating no significant matrix effects. Recoveries ranged from 80.1 to 93.7% (certified reference material) and from 89 to 107% (spike tests). The LOD and LOQ results from the method were consistent with the techniques used (FAAS and GFAAS), with high analytical throughput. The proposed method was then used to determine Cr, Cu, Zn, Cd, and Pb in river sediment samples from Rio Doce, Minas Gerais, Brazil. The results indicated levels below those permitted by Brazilian legislation for all the analytes, with the exception of Cr.

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.

Sign in / Sign up

Export Citation Format

Share Document