Preconcentration of Nickel(II) by a Mini-Flow System with a Novel Ternary Oxide Solid Phase and Flame Atomic Absorption Spectrometry

Wutke, Nathalia Barbosa; Diniz, Kristiany Moreira; Corazza, Marcela Zanetti; Oliveira, Fernanda Midori de; Ribeiro, Emerson Schwingel; Fonseca, Bruna Teixeira da; Segatelli, Mariana Gava; Tarley, César Ricardo Teixeira

doi:10.1080/00032719.2015.1041025

Cited by 11 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The properties of nanometer-sized mixed oxide adsorbents include increased adsorbent reusability, stability and high adsorption capacity for metal ions over a wide pH range. In addition, these mixed oxide nanomaterials possess strong chemical activity as a result of the excess Lewis and Brønsted acid/base binding sites that permit high retention/adsorption of cationic and anionic metal species (Diniz et al, 2014;Kandula and Jeevanandam, 2015;Wutke et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

Ramutshatsha

Ngila

Ndungu

et al. 2020

WSA

View full text Add to dashboard Cite

The objectives of this study were to assess the suitability of metal oxide nanomaterials for removal of major cations Na+, K+, Ca2+ and Mg2+ from seawater. The as-synthesised nanomaterials were characterized using different techniques, such as XRD, TEM, and BET. The simultaneous removal of Na+, K+, Ca2+ and Mg2+ ion from aqueous solutions by α-Fe2O3 and SiO2/Nb2O5/Fe2O3 nanostructures was studied using batch method. The influence of different experimental parameters (such as initial metal ion concentrations, mass of adsorbent, sample pH and contact time) that affect the simultaneous removal of metal ions was studied using response surface methodology (RSM) based on small central composite design (SCCD). Under optimised conditions, the highest percentage removal was 75%, 92%, 93% and 85% for Na+, K+, Ca2+ and Mg2+, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

Ramutshatsha

Ngila

Ndungu

et al. 2020

WSA

View full text Add to dashboard Cite

show abstract

“…The figures of merit of the proposed FI-FDSE-FAAS method and other selected on-line SPE methods coupled to FAAS [8,10,12,14,15,18,24,[30][31][32][33][34][35][36][37][38][39][40][41][42][43], are compiled in Table S1 (Supplementary Materials). The proposed method features good sensitivity and precision with better or similar detection limits than earlier works for Cu(II) [8,15,31,32,34], Ni(II) [8,[38][39][40], Zn(II) [41][42][43], Pb(II) [8,24], and Cd(II) [24] assays, using a shorter preconcentration time.…”

Section: Analytical Performance Characteristicsmentioning

confidence: 99%

On-Line Fabric Disk Sorptive Extraction via a Flow Preconcentration Platform Coupled with Atomic Absorption Spectrometry for the Determination of Essential and Toxic Elements in Biological Samples

et al. 2018

View full text Add to dashboard Cite

Fabric phase sorptive extraction (FPSE) has gained notable attention and interest both in batch and automatic mode utilizing advanced sol-gel derived microextraction sorbents and the hydrophobic/hydrophilic properties of fabric substrates. Recently, the innovative on-line fabric disk sorptive extraction (FDSE) has opened new opportunities in the field of automatic sample preparation (preconcentration/separation). A novel sol-gel sorbent based on caprolactone-dimethylsiloxane-caprolactone block polymer comprised of a non-polar dimethylsiloxane and hydrophilic caprolactone as a coating on hydrophobic polyester fabric substrate and its evaluation in an automatic FDSE system coupled with flame atomic absorption spectrometry (FAAS), is presented for the first time. The capabilities of the proposed flow injection system were assessed for trace Cu(II), Ni(II), Zn(II), Pb(II), and Cd(II) determination in urine samples. The method was based on the on-line formation of target analytes with ammonium pyrrolidine dithiocarbamate (APDC) and their retention onto the surface of the fabric disk medium. Methyl isobutyl ketone (MIBK) was used to elute metal-APDC complexes directly into the nebulizer-burner system of FAAS. For 90 s of preconcentration time, enhancement factors of 250, 130, 185, and 36 and detection limits (3 s) of 0.15, 0.41, 1.62, and 0.49 µg L −1 were obtained for Cu(II), Ni(II), Pb(II), and Cd(II), respectively. For 30 s of preconcentration time, an enhancement factor of 49 and a detection limit of 0.12 µg L −1 was achieved for Zn(II) determination. The precision, expressed as relative standard deviation (RSD), was lower than 3.5% for all metals. The accuracy of the proposed method was sufficient and evaluated by analyzing certified reference materials and biological samples.

show abstract

An electrochemical sensor-based carbon black associated with a modified mixed oxide (SiO2/TiO2/Sb2O5) for direct determination of thiamethoxam in raw honey and water samples

et al. 2022

View full text Add to dashboard Cite

Preconcentration of Nickel(II) by a Mini-Flow System with a Novel Ternary Oxide Solid Phase and Flame Atomic Absorption Spectrometry

Cited by 11 publications

References 27 publications

Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

On-Line Fabric Disk Sorptive Extraction via a Flow Preconcentration Platform Coupled with Atomic Absorption Spectrometry for the Determination of Essential and Toxic Elements in Biological Samples

An electrochemical sensor-based carbon black associated with a modified mixed oxide (SiO2/TiO2/Sb2O5) for direct determination of thiamethoxam in raw honey and water samples

Contact Info

Product

Resources

About