Multivariate Optimization of Method of Slurry Sampling for Determination of Iron and Zinc in Starch Samples by Flame Atomic Absorption Spectrometry

Amorim, Fábio Alan Carqueija; Costa, Vinícius Câmara; Guedes, Wesley Nascimento; Sá, Ivero Pita de; Santos, Mayara Costa dos; Silva, Erik G. P. da; Lima, Daniel de Castro

doi:10.1007/s12161-015-0296-2

Cited by 25 publications

(11 citation statements)

References 28 publications

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“…Fluorescent chemosensors are deployed in many applied methods, due to their high sensitivity and rapid response in detecting many different significant ions, including biological molecules [ 11 , 12 ], drug molecules [ 13 , 14 ], pesticides [ 15 , 16 ], or heavy metal ions [ 17 , 18 , 19 , 20 ]. They also outperform many devices in shortening the time required to prepare a sample for measurement, such as flame atomic absorption spectrometry [ 21 , 22 ], inductively coupled plasma [ 23 ], and inductively coupled plasma mass spectrometry [ 24 ], accompanied by many complicated steps that may lead to the loss of the materials to be analyzed. In addition, the analysis-based instrumentation techniques suffer from the low limit of concentration range in which these devices are applied.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Rapid Synthesis of Luminescent Tryptophan-Stabilized Silver Nanoclusters for Ultra-Sensitive Detection of Fe(III), and Their Application in a Test Strip

et al. 2022

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A new preparation method for extreme fluorescent green emission tryptophan-stabilized silver nanoclusters (Tryp-AgNCs) is presented in this scientific research. The produced silver nanoclusters are dependent on tryptophan amino acid which contributes to normal growth in infants and the sublimation and recovery of human protein, muscles, and enzymes. Herein, we have introduced a green method by using microwave-assisted rapid synthesis. The subsequent silver nanoclusters (AgNCs) have excitation/emission peaks at 408/498 nm and display a considerable selectivity to Fe(III) ions. The tryptophan amino acid molecule was used in the synthesis process as a reducing and stabilizing agent. The Tryp-AgNCs’ properties were investigated in terms of morphology, dispersity, and modification of the synthesized particles using different advanced instruments. The luminescent nanoclusters traced the Fe(III) ions by the luminescence-quenching mechanism of the Tryp-AgNCs luminescence. Therefore, the extreme selectivity of the prepared nanoclusters was exhibited to the Fe(III) ions, permitting the sensitive tracing of ferric ions in the lab and in the real environmental samples. The limit of detection for Fe(III) ions based on Tryp-AgNCs was calculated to be 16.99 nM. The Tryp-AgNCs can be efficiently applied to a paper test strip method. The synthesized nanoclusters were used efficiently to detect the Fe(III) ions in the environmental samples. Moreover, we examined the reactivity of Tryp-AgNCs on various human tumor cell lines. The results show that the Tryp-AgNCs exhibited their activity versus the cancer cells in a dose-dependent routine for the perceived performance versus the greatest-used cancer cell lines.

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Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Rapid Synthesis of Luminescent Tryptophan-Stabilized Silver Nanoclusters for Ultra-Sensitive Detection of Fe(III), and Their Application in a Test Strip

et al. 2022

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“…To date, many analytical methods like flame atomic absorption spectrometry (F-AAS) [ 8 ], graphite furnace atomic absorption spectrometry (GF-AAS) [ 9 , 10 ], hydride generation atomic absorption spectrometry (HG-AAS) [ 11 – 13 ], and inductively coupled plasma optical emission spectrometry (ICP-OES) [ 14 , 15 ] have been developed for analysis of heavy metals in the food matrices, especially in rice samples. Some speciation analysis methods have been also developed for analysis of toxic compounds, especially arsenic compounds, in rice samples [ 16 – 20 ].…”

Section: Introductionmentioning

confidence: 99%

Arsenic and Heavy Metals in Vietnamese Rice: Assessment of Human Exposure to These Elements through Rice Consumption

Chu

Duong

Luu

et al. 2021

Journal of Analytical Methods in Chemistry

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In this work, twelve heavy metals and arsenic, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, and Zn, in a rice sample collected from some areas of Vietnam have been quantified and implemented by using multiple analytical platforms such as ICP-MS, AAS, and mercury analyser. Seventy rice samples collected from the Red River Delta and mining zone activity were analysed. Concentration of heavy metals and arsenic in rice was analysed after appropriated sample digestion using internal or external calibration curves. The mean concentration (mg kg−1 dried weight) of the analysed elements in rice samples decreased on the order of Mn (19.268) > Fe (13.624) > Zn (8.163) > Cu (3.138) > Ni (0.384) > Cr (0.296) > Co (0.279) > As (0.115) > Cd (0.111) > Pb (0.075) > Hg (0.007) > Se (<LOD). Mercury, a highly toxic element, has been only found in rice samples collected in the mining activity zone (frequency detection 14.5% of total samples). The experimental results indicated that the heavy metals and arsenic found in rice collected from mining activity zone were higher than those in rice harvested from normal cultivated areas like the Red River Delta. The heavy metals and arsenic content in Vietnamese rice samples were also compared with the concentration of heavy metals in other foreign rice samples in some recent publications. The estimated daily intake through rice consumption was calculated and compared with the level proposed by the Food and Agriculture Organization of the United Nations. The results indicated that the provisional daily intake of Cd was higher than the level proposed by FAO, while the intake of other heavy metals was in an acceptable range of CODEX standard.

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“…DoE can be used for several applications depending on issue to be solved. In a review paper, Hibbert [11] described the use of several DoE processes applied to chromatographic separation and highlighted the most used in optimization and validation studies such as: (1) Factorial design [12][13][14]; (2) Plackett-Burman (PB) design [15][16][17]; (3) Central Composite design (CCD) [18][19][20]; (4) Box-Behnken design (BBD) [21][22][23]; (5) Doehlert design (DD) [24][25][26] and (6) Mixture design [27][28][29]. Other types of DoE have been used and often cited in the literature, as examples Mixed-level fractional factorial design [30][31][32]; Definitive Screening design (DSD) [33][34][35] and D-optimal design [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Key information related to quality by design (QbD) applications in analytical methods development

Araujo¹,

Andrade²,

Babos³

et al. 2020

Braz. J. Anal. Chem.

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In this review, quality by design (QbD) initiatives are described as applications for many types of processes, such as in the pharmaceutical industry, biotechnology field, and for analytical methods development. Design space (DS) and design of experiments (DoE) provide useful results for analytical methods development and simulation of advanced processes in traditional manufacturing relationships. The three topics, QbD, DS and DoE are the best way to achieve strong and efficient industrial production.

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Multivariate Optimization of Method of Slurry Sampling for Determination of Iron and Zinc in Starch Samples by Flame Atomic Absorption Spectrometry

Cited by 25 publications

References 28 publications

Microwave-Assisted Rapid Synthesis of Luminescent Tryptophan-Stabilized Silver Nanoclusters for Ultra-Sensitive Detection of Fe(III), and Their Application in a Test Strip

Microwave-Assisted Rapid Synthesis of Luminescent Tryptophan-Stabilized Silver Nanoclusters for Ultra-Sensitive Detection of Fe(III), and Their Application in a Test Strip

Arsenic and Heavy Metals in Vietnamese Rice: Assessment of Human Exposure to These Elements through Rice Consumption

Key information related to quality by design (QbD) applications in analytical methods development

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