Determination of Zn(II) in alcohol fuel by flame atomic absorption spectrometry after on-line preconcentration using a solid phase extraction system

Alves, Vanessa N.; Mosquetta, Rafael; Carasek, Eduardo; Coelho, Nívia M. M.

doi:10.1134/s1061934812050139

Cited by 10 publications

(3 citation statements)

References 24 publications

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“…The seeds were used in the determination of silver in water [20], inorganic arsenic in natural waters [21], cadmium and zinc in alcohol fuel [22,23] and lead in beer samples [13]. Its husks were used in the selective extraction of chromium in water [24], in the copper determination in gasoline samples [25], in zinc determination in cachaça, and in the determination of lead in chicken feed [27].…”

Section: Adsorbents Used In Solid Phase Extraction Systems 21 Lignomentioning

confidence: 99%

“…In the study developed by Alves and Coelho [24], analytical methodology applied for selective extraction of inorganic chromium in water, using a system of analysis by flow injection like the used by the previous group [23] was evaluated. For the selective extraction and the chromium species preconcentration, the Moringa oleifera husks were used as biosorbent and the detection was made through the FAAS technique.…”

Section: Heavy Metalsmentioning

confidence: 99%

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Biosorbents in the Metallic Ions Determination

Júnior¹,

Siqueira²,

eSilva³

et al. 2018

Heavy Metals

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This chapter provides an overview and discusses analytical strategies for metallic ions determination using solid phase extraction. Solid phase extraction (SPE) is a much-used technique for extraction and/or concentration of complex samples, so that the analytes present in low concentration were detected mainly using chromatographic methods. However, in recent years, this technique has been widely used in the development of methodologies for metallic ions determination in the deferential samples. This technique shows simplicity and rapidity comparing with other conventional techniques, liquidliquid extraction, cloud point extraction and others. Solid phase extraction procedures become even more interesting when commercial adsorbents are exchanged for others with higher adsorptive capacity, selectivity, flexibility, economy and low environmental impacts. For this purpose, some inorganic, organic and several natural adsorbents are used. New approaches to obtain adsorbent materials from natural sources such as fungi, bacteria, industrial residues and composting materials have received attention. These materials have been used in the development of analytical methods with varied proposals, such as preconcentration or speciation of metal ions.

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Section: Adsorbents Used In Solid Phase Extraction Systems 21 Lignomentioning

confidence: 99%

Section: Heavy Metalsmentioning

confidence: 99%

Biosorbents in the Metallic Ions Determination

Júnior¹,

Siqueira²,

eSilva³

et al. 2018

Heavy Metals

View full text Add to dashboard Cite

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“…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

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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.

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Determination of arsenic species in rice samples using CPE and ETAAS

Costa

Coelho

2015

Food Chemistry

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Determination of Zn(II) in alcohol fuel by flame atomic absorption spectrometry after on-line preconcentration using a solid phase extraction system

Cited by 10 publications

References 24 publications

Biosorbents in the Metallic Ions Determination

Biosorbents in the Metallic Ions Determination

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

Determination of arsenic species in rice samples using CPE and ETAAS

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