Copper determination in beer by flame atomic absorption spectrometry after extraction and preconcentration by dispersive liquid–liquid microextraction

Silveira, Jader R.K.; Brudi, Letícia C.; Waechter, Samuel Rodrigo; Mello, Paola A.; Costa, Adilson Ben da; Duarte, Fábio A.

doi:10.1016/j.microc.2022.108181

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…Considering that DLLME has a great pre-concentration factor, its combination with FAAS is an interesting manner for elements quantification. FAAS was selected for its wide availability, validity, low operating cost, selectivity, and convenience with a pre-concentration method (DLLME), appropriate for many matrixes, and it is also free from most interferences [26][27].…”

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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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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“…However, the application of oxalyldihydrazide-based method shows some limitations, due to the significant number of steps and harmful reagents, including mineral acids, acetaldehyde, and oxalyldihydrazide itself, required for the analysis. In this scenario, the development of several methods [ 10 – 15 ] for Cu 2+ ion determination with satisfying sensitivity and selectivity has been proposed in literature, although characterized by some drawbacks. As a matter of fact, the determination of copper in food and beer matrices has been proposed using UV–Vis [ 14 , 15 ] or F-AAS [ 10 ] spectroscopy coupled with a dispersive liquid–liquid microextraction (DLLME) preconcentration, which allowed to reach LOD values ranging from 10 −4 to 10 −7 mol L −1 , but the DLLME implies the use of toxic CCl 4 as extractant solvent.…”

Section: Introductionmentioning

confidence: 99%

“…In this scenario, the development of several methods [ 10 – 15 ] for Cu 2+ ion determination with satisfying sensitivity and selectivity has been proposed in literature, although characterized by some drawbacks. As a matter of fact, the determination of copper in food and beer matrices has been proposed using UV–Vis [ 14 , 15 ] or F-AAS [ 10 ] spectroscopy coupled with a dispersive liquid–liquid microextraction (DLLME) preconcentration, which allowed to reach LOD values ranging from 10 −4 to 10 −7 mol L −1 , but the DLLME implies the use of toxic CCl 4 as extractant solvent. In addition, the analytical chemistry community attention to the development of new methods able to respect the green analytical chemistry (GAC) principles has gained in the last years [ 16 – 19 ].…”

Section: Introductionmentioning

confidence: 99%

Development and validation of an eco-compatible UV–Vis spectrophotometric method for the determination of Cu2+ in aqueous matrices

Prete,

Iannaccone,

Proto

et al. 2023

Anal Bioanal Chem

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Cu2+ are ubiquitous ions in the ecosystem and are responsible of serious environmental pollution. Indeed, the development of sensitive methods for Cu2+ detection is an urgent demand. In this work, we proposed a new spectrophotometric method for Cu2+ determination in different water matrices (distilled water, drinking water, wastewater, and river water). The method employs a bio-based organic ligand namely tetrasodium iminodisuccinate (IDS) able to form a stable complex with the analyte with a maximum absorption at 710 nm. Within the linear range of 6.3–381 mg L−1, the limit of detection (LOD) was determined to be as 1.43 mg L−1. Moreover, the recovery data of the spiked analysis of drinking/river/wastewater water samples were also satisfactory and verified the feasibility of the method for the analysis of Cu2+ in natural conditions. Finally, the AGREE assessment tool was used for a quantitative evaluation of the proposed method and reference method, in agreement with the green analytical chemistry principles. The results showed the lower environmental impact of the proposed method and the suitability of this novel approach for Cu2+ in water matrices. Graphical abstract

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“…In terms of analytical chemistry, a vast number of recent analytical methods have been developed and validated for the quantification of Cu 2+ in several samples, including biochemical, food, water, and wastewater samples. These methods are mainly spectroscopic and require expensive instrumentation and specialized staff, including batch UV-Vis spectrometry [ 11 , 12 , 13 , 14 ], flame atomic absorption spectroscopy (FAAS) [ 15 , 16 , 17 , 18 ], graphite furnace atomic absorption spectrometry (GFAAS) [ 19 , 20 ], inductively coupled plasma (ICP) [ 21 , 22 ], flow injection [ 23 ], and fluorescence [ 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost Colorimetric Assay for the Analytical Determination of Copper Ions with Consumer Electronic Imaging Devices in Natural Water Samples

Gkouliamtzi,

Tsaftari,

Tarara

et al. 2023

Molecules

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This study reports a new approach for the determination of copper ions in water samples that exploits the complexation reaction with diethyldithiocarbamate (DDTC) and uses widely available imaging devices (i.e., flatbed scanners or smartphones) as detectors. Specifically, the proposed approach is based on the ability of DDTC to bind to copper ions and form a stable Cu-DDTC complex with a distinctive yellow color detected with the camera of a smartphone in a 96-well plate. The color intensity of the formed complex is linearly proportional to the concentration of copper ions, resulting in its accurate colorimetric determination. The proposed analytical procedure for the determination of Cu2+ was easy to perform, rapid, and applicable with inexpensive and commercially available materials and reagents. Many parameters related to such an analytical determination were optimized, and a study of interfering ions present in the water samples was also carried out. Additionally, even low copper levels could be noticed by the naked eye. The assay performed was successfully applied to the determination of Cu2+ in river, tap, and bottled water samples with detection limits as low as 1.4 µM, good recoveries (89.0–109.6%), adequate reproducibility (0.6–6.1%), and high selectivity over other ions present in the water samples.

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Copper determination in beer by flame atomic absorption spectrometry after extraction and preconcentration by dispersive liquid–liquid microextraction

Cited by 12 publications

References 30 publications

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

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

Development and validation of an eco-compatible UV–Vis spectrophotometric method for the determination of Cu2+ in aqueous matrices

A Low-Cost Colorimetric Assay for the Analytical Determination of Copper Ions with Consumer Electronic Imaging Devices in Natural Water Samples

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