A robotic magnetic nanoparticle solid phase extraction system coupled to flow-batch analyzer and GFAAS for determination of trace cadmium in edible oils without external pretreatment

Barreto, Inakã S.; Andrade, Stéfani Iury E.; Cunha, Francisco Antônio da Silva; Lima, Marcelo B.; Araújo, Mário César Ugulino de; Almeida, Luciano F.

doi:10.1016/j.talanta.2017.09.063

Cited by 53 publications

(13 citation statements)

References 31 publications

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“…Method validation has been performed as recommended in the International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH) [28][29][30].…”

Section: Methods Validationmentioning

confidence: 99%

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Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles

et al. 2019

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A sensitive, rapid, reliable, and easily applicable method based on magnetic solid phase extraction (MSPE) combined with HPLC-PDA was developed for monitoring propoxur (PRO) and fenitrothion (FEN) pesticides in environmental water samples. The effect of major experimental variables on the extraction efficiency of both the pesticides was investigated and optimized systematically. For this purpose, a new magnetic material containing decanoic acid on the surface of particles was synthesized and characterized by XRD, FT-IR, SEM, EDX, and TGA analysis in detail. The simultaneous determination of pesticide molecules was carried out by using a Luna Omega C18 column, isocratic elution of acetonitrile (ACN): Water (70:30 v/v) with a flow rate of 1.2 mL min−1. After MSPE, the linear range for pesticide molecules (r2 > 0.9982) was obtained in the range of 5–800 and 10–800 ng mL−1, respectively. The limit of detections (LOD) are 1.43 and 4.71 ng mL−1 for PRO and FEN, respectively while RSDs % are below 3.5%. The applicability of the proposed method in four different environmental samples were also investigated using a standard addition-recovery procedure. Average recoveries at two spiking levels were over the range of 91.3–102.5% with RSD < 5.0% (n = 3). The obtained results show that decanoic acid grafted magnetic particles in MSPE combined with HPLC-PDA is a fast and simple method for the determination of PRO and FEN in environmental water samples.

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Section: Methods Validationmentioning

confidence: 99%

“…Moreover, the required selectivity can be obtained by covering the core with various functional groups for target molecules. These are ideal properties expected from an effective preconcentration and separation method [27,28].…”

Section: Introductionmentioning

confidence: 99%

Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles

et al. 2019

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“…A low concentration of Cd in natural water and drinking water samples requires high-sensitivity analytical methods for the precise concentration measurement. Graphite furnace atomic absorption spectrometry (GFAAS) [7], flame furnace atomic absorption spectrometry (FAAS) [8], colorimetric determination with dithizone [9,10], inductively coupled argon plasma mass spectrometry…”

Section: Introductionmentioning

confidence: 99%

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Lü

Zhang

2020

Applied Sciences

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Nanomaterials have been applied in the analysis of trace contaminants in aquatic samples; however, the adsorption affinity of heavy metal ions to metallic oxide nanoparticles is low. Meso-2,3-dimercaptosuccinic acid-polydopamine-zinc oxide (DMSA/PDA/ZnO) was synthesized through a facile self-assembly process for enhancing the adsorption capacity of ZnO to cadmium cation (Cd(II)). A method for the analysis of trace Cd(II) in water samples was developed while using dimercaptosuccinic acid/Polydopamine/zinc oxide (DMSA/PDA/ZnO) as an adsorbent and atomic absorption spectrometry (AAS) as a means of determination. The results demonstrate that the adsorption ratio of DMSA-PDA-ZnO to 1 mg/L Cd(II) is around 95% at pH 6.0–8.0 with a contact time of 31 h, and the enrichment rate can be more than 98% with the dosage of DMSA-PDA-ZnO exceeding 1.0 g/L. The adsorption isotherm of Cd(II) to DMSA/PDA/ZnO fits the Langmuir equation well, and the saturated adsorption of DMSA-PDA-ZnO to Cd(II) is 28.5 mg/g. The detection limit (3σ) of this method is 0.1 μg/L, with a relative standard deviation of 1%. Additionally, this method presents satisfactory performance with a recovery rate of 86−90% when applied to the detection of Cd(II) in environmental water samples.

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“…If toxic metals are consumed the risk of a particular population may increase, so it is essential to determine the concentration of these metals (Sobhan 2016). Many studies have been recently carried out on the determination of heavy metals in edible oils all over the world (Cindiric et al 2007, Mendil et al 2009, Bakkali et al 2012, Savio et al 2014, Barreto et al 2018, Manjusha et al 2019, Karasakal 2020. Food contamination by heavy metals has become a reality and constitute a challenge for many countries (Karimi et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Concentration of Trace Metals in Some Major Edible Oils of Riyadh

Alrajhi

Idriss

2020

RICA

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Chemical elements play major roles in various metabolic processes in the human body. Moreover, some of these elements are toxic if consumed in excessive quantities. In this study, a total of 11 elements (Mn +2 , Fe +2 , Cu +2 , Cr +3 , Zn +2 , Ni +2 , Se, Pb +2 , As +3 , and Al +3) were studied in edible vegetable oil samples by using an inductively coupled plasma-optical emission spectrometer. The concentration of the metals was found to be in trace level lower than the maximum allowable concentration limit set by the World Health Organization as well as the recommended daily intake of metals. Pearson correlation coefficients showed strong correlations between Cr and Fe (0.998), Cr and Mn (0.994), Cr and Ni (0.985), Fe and Mn (0.994), Fe and Ni (0.985), Mn and Ni (0.978), and As and Se (0.997). It can be concluded that the edible vegetable oil samples were free of any chemical element contamination.

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A robotic magnetic nanoparticle solid phase extraction system coupled to flow-batch analyzer and GFAAS for determination of trace cadmium in edible oils without external pretreatment

Cited by 53 publications

References 31 publications

Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles

Analytical Methodology for Trace Determination of Propoxur and Fenitrothion Pesticide Residues by Decanoic Acid Modified Magnetic Nanoparticles

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Concentration of Trace Metals in Some Major Edible Oils of Riyadh

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