Assessing the harmfulness of high-salinity oilfield-produced water related to trace metals using vortex-assisted dispersive liquid-liquid microextraction combined with inductively coupled plasma optical emission spectrometry

Guedes, Lívia Ferreira de Melo; Braz, Bernardo Ferreira; Freire, Aline Soares; Santelli, Ricardo Erthal

doi:10.1016/j.microc.2020.104714

Cited by 21 publications

(5 citation statements)

References 44 publications

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“…The metal-ligand interaction for complex formation and efficiency of extraction is directly dependent on the pH level of the solution. A factorial design was utilized for screening the impact of the variables on the response and removing the variables that are not significant [34]. The CCD model is a powerful tool for analyzing the optimum level of parameters used in the analysis of Cd in food and water samples.…”

Section: Discussionmentioning

confidence: 99%

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Ultra-Sensitive Determination of Cadmium in Food and Water by Flame-AAS after a New Polyvinyl Benzyl Xanthate as an Adsorbent Based Vortex Assisted Dispersive Solid-Phase Microextraction: Multivariate Optimization

Altunay,

Hazer,

Lanjwani

et al. 2023

Foods

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Background: Cadmium (Cd) is a very toxic and carcinogenic heavy metal even at low levels and it is naturally present in water as well as in food. Methods: A new polyvinyl benzyl xanthate (PvbXa) was synthesized and used as a new adsorbent in this work. It contains pendant sulfide groups on the main polystyryl chain. Using this new adsorbent, PvbXa, a vortex-assisted dispersive solid-phase microextraction (VA-dSPµE) procedure was developed for the determination of cadmium from food and water samples via flame atomic absorption spectrophotometry (FAAS). Synthesized PvbXa was characterized by 1H Nuclear magnetic resonance (NMR) Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS). The different parameters of pH, sample volume, mixing type and time, sorbent amount, and eluent time were optimized using standard analytical methods. Results: The optimized method for assessment of Cd in food and water samples shows good reliability. The optimum conditions were found to be a 0.20–150 µg L−1 linear range, 0.06 µg L−1 LOD, 0.20 µg L−1 LOQ, 4.3 RSD %, and a preconcentration factor of 160. Conclusions: The statistically experimental variables were utilized using a central composite design (CCD). The present method is a low-cost, simple, sensitive, and very effective tool for the recovery of Cd.

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Section: Discussionmentioning

confidence: 99%

“…Factorial designs at three levels are mostly utilized by screening the impact of variables on the response and removing those variables that are not significant [34]. The present study coded low (−1), middle (0), and high (+1) levels, which were optimized using a central composite design (CCD) (Table 1).…”

Section: Factorial Designmentioning

confidence: 99%

Ultra-Sensitive Determination of Cadmium in Food and Water by Flame-AAS after a New Polyvinyl Benzyl Xanthate as an Adsorbent Based Vortex Assisted Dispersive Solid-Phase Microextraction: Multivariate Optimization

Altunay,

Hazer,

Lanjwani

et al. 2023

Foods

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“…Considering that food and water are prominent sources of matrix effects if Co is directly analyzed, digestion of the sample is typically necessary prior to quantification [9]. Taking into account the range of Co amount often present in food and water [9][10], as well as the inherent dilution produced by digestion of sample [11], high sensitivity instruments [12][13] such as plasma atomization-based ones are frequently required to detect Co in food and water. Nevertheless, flame atomic absorption spectroscopy (FAAS) is the most popular method, and it is employed for the determination of water Co content in soil and food [14].…”

Section: ■ Introductionmentioning

confidence: 99%

A Univariate Optimization Strategy for Pre-concentration of Cobalt(II) in Various Matrixes by a DLLME before Analysis Using FAAS

Mehdi,

Alshamkhawy

2024

Indones. J. Chem.

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A procedure based on dispersive liquid-liquid microextraction (DLLME) for cobalt (Co) quantification in an Iraqi environmental matrix by flame atomic absorption spectroscopy (FAAS) was applied in this work. A case-study approach was chosen to obtain further in-depth information on the Co levels and to evaluate the effectiveness of N-salicylideneaniline (SAN) as a complexing agent for pre-concentration and extraction of Co. An univariate strategy was utilized to achieve the optimum extraction conditions. The estimated limits of detection (LOD) and quantification (LOQ) under optimum conditions were 1.04 and 3.47 µg L−1, respectively. The results achieved by the proposed system were compared with those using the microwave digestion/graphite furnace atomic absorption spectrometer (MWD/GF-AAS) for digest samples and also for some water samples (Direct GF-AAS). The proposed procedure was applied for analyzing eleven environmental samples. The detectable Co levels for water samples ranged from 0.72 to 4.30 µg L−1 with a relative standard deviation of 3.7–8.8%, while the concentration for solid samples ranged from 0.17–4.51 µg g−1 (2.4–11.8 RSD %). DLLME/FAAS proposed procedure is effective, simple, and has the benefit of minimizing the organic solvent consumption by a few microliters, which results in little waste.

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“…In another study, de Melo et al reported vortex-assisted dispersive liquid-liquid microextraction for Pb and Cd determination. The developed method was successfully applied to sea water sample without any interference [ 16 ]. Werner developed deep eutectic solvent-based ultrasounds-assisted DLLME for same analytes.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular solvent based microextraction for the preconcentration of Pb2+ and Cd2+ prior to spectrophotometric detection

2021

Turk J Chem

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Supramolecular solvent based dispersive liquid-liquid microextraction technique has been developed as a preconcentration tool for the determination of trace level of Pb 2+ and Cd 2+ . Dodecanol dispersed in tetrahydrofuran has been utilized as a supramolecular-solvent system for the extraction of analytes prior to their quantitative determination with graphite furnace atomic absorption spectrophotometer. Both Pb 2+ and Cd 2+ were complexed with dithizone followed by the addition of supramolecular solvent, which were efficiently extracted by supramolecular solvent system. The experimental variables that could possibly influence the extraction efficiency i.e. pH, temperature, sample volume, centrifugation time, rate of centrifugation, ionic strength, etc were subjected to the optimization step. An interference study was also conducted to check the selectivity of developed method. Limit of detection calculated for Pb 2+ and Cd 2+ was 0.015 and 0.061 mg L -1 , respectively. Limit of quantification was 0.05 and 0.2 mg L -1 for Pb 2+ and Cd 2+ , respectively. The analytical signal was enhanced to 30 times in case of Pb 2+ and 27 times in case of Cd 2+ . The results obtained revealed that the developed method is rapid, simple, sensitive and efficient for the determination of both analytes in real water samples.

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Assessing the harmfulness of high-salinity oilfield-produced water related to trace metals using vortex-assisted dispersive liquid-liquid microextraction combined with inductively coupled plasma optical emission spectrometry

Cited by 21 publications

References 44 publications

Ultra-Sensitive Determination of Cadmium in Food and Water by Flame-AAS after a New Polyvinyl Benzyl Xanthate as an Adsorbent Based Vortex Assisted Dispersive Solid-Phase Microextraction: Multivariate Optimization

Ultra-Sensitive Determination of Cadmium in Food and Water by Flame-AAS after a New Polyvinyl Benzyl Xanthate as an Adsorbent Based Vortex Assisted Dispersive Solid-Phase Microextraction: Multivariate Optimization

A Univariate Optimization Strategy for Pre-concentration of Cobalt(II) in Various Matrixes by a DLLME before Analysis Using FAAS

Supramolecular solvent based microextraction for the preconcentration of Pb2+ and Cd2+ prior to spectrophotometric detection

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