Flow injection analysis–solid phase extraction (FIA–SPE) method for preconcentration and determination of trace amounts of penicillins using methylene blue grafted polyurethane foam

El‐Shahat, M. F.; Burham, N.; Azeem, Sami M. Abdel

doi:10.1016/j.jhazmat.2010.01.027

Cited by 30 publications

(8 citation statements)

References 35 publications

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“…PGK determination is important in biotechnological production process control and antibiotic preparation quality control. Various analytical methods for the determination of PGK in pharmaceutical formulations have been proposed . They include spectrophotometry–solid phase extraction with UV detection at 230 nm , Fourier transform infrared spectrometry and chemiluminescence methods.…”

Section: Introductionmentioning

confidence: 99%

“…Various analytical methods for the determination of PGK in pharmaceutical formulations have been proposed . They include spectrophotometry–solid phase extraction with UV detection at 230 nm , Fourier transform infrared spectrometry and chemiluminescence methods. Chemiluminescence is becoming a powerful analytical tool with widespread applications in various fields, owing to its high sensitivity, wide dynamic range and low‐cost instrumentation .…”

Section: Introductionmentioning

confidence: 99%

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Direct chemiluminescence determination of penicillin G potassium and a chemometrical optimization approach

et al. 2011

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A highly selective and simple chemiluminescence (CL) method for determination of penicillin G potassium (PGK) was developed. In the proposed method, CL was elicited from PGK upon its oxidation with H(2)O(2). The light emission was enhanced in the presence of N-cetyl-N,N,N-trimethylammonium bromide (CTMAB). An experimental design, central composite design (CCD), was used to realize the optimized variables, including pH, surfactant (CTMAB) and H(2)O(2) concentrations. Under optimum condition, the calibration graph was linear in the range 3.3 × 10(-3) -3.3 × 10(-1) mmol/L, with a detection limit of 8.8 × 10(-4) mmol/L for PGK. The precision was calculated by analysing samples containing 1.6 × 10(-1) mmol/L PGK (n = 5) and the relative standard deviation (RSD) was 1.40%. The utility of this method was demonstrated by determining PGK in pharmaceutical formulations for injection. The proposed method was validated by a reference method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct chemiluminescence determination of penicillin G potassium and a chemometrical optimization approach

et al. 2011

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“…The developed PUFs efficiently adsorbed the metal species, following a simple SPE procedure. In the case that methylene blue was used to functionalize PUFs, penicillins could be extracted from pharmaceuticals and milk samples (previously deproteinated with the addition of acetic acid), following a simple SPE procedure [59]. The developed procedure was sensitive to pH changes since they affected the formation of ion pairs between the antibiotics and the methylene blue-functionalized PUFs.…”

Section: Recent Uses Of Polyurethane Foamsmentioning

confidence: 99%

Sponges and Sponge-Like Materials in Sample Preparation: A Journey from Past to Present and into the Future

Chatzimitakos

Stalikas

2020

Molecules

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Even though instrumental advancements are constantly being made in analytical chemistry, sample preparation is still considered the bottleneck of analytical methods. To this end, researchers are developing new sorbent materials to improve and replace existing ones, with the ultimate goal to improve current methods and make them more efficient and effective. A few years ago, an alternative trend was started toward sample preparation: the use of sponge or sponge-like materials. These materials possess favorable characteristics, such as negligible weight, open-hole structure, high surface area, and variable surface chemistry. Although their use seemed promising, this trend soon reversed, due to either the increasing use of nanomaterials in sample preparation or the limited scope of the first materials. Currently, with the development of new materials, such as melamine sponges, along with the advancement in nanotechnology, this topic was revived, and various functionalizations were carried out on such materials. The new materials are used as sorbents in sample preparation in analytical chemistry. This review explores the development of such materials, from the past to the present and into the future, as well as their use in analytical chemistry.

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“…The surface of the magnetic nanoparticles was functionalized using the silylation reaction 24,25 with some modications. 26 Dried magnetic nanoparticles (1.5 g), 3.0 g of 3-aminopropyl triethoxysilane and 25 mL of 0.1% acetic acid (v/v) were stirred at room temperature for 30 min. The suspension was then dried overnight in an oven at 80 C. The obtained magnetic nanoparticles functionalized with 3-aminopropyl triethoxysilane (APTS-magnetic nanoparticles) were washed with water and nally dried in an oven at 90 C.…”

Section: Synthesis and Derivatization Of Magnetic Nanoparticlesmentioning

confidence: 99%

Enhancement of sensitivity for the spectrophotometric determination of carbaryl using dispersive liquid microextraction combined with dispersive μ-solid phase extraction

2013

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Flow injection analysis–solid phase extraction (FIA–SPE) method for preconcentration and determination of trace amounts of penicillins using methylene blue grafted polyurethane foam

Cited by 30 publications

References 35 publications

Direct chemiluminescence determination of penicillin G potassium and a chemometrical optimization approach

Direct chemiluminescence determination of penicillin G potassium and a chemometrical optimization approach

Sponges and Sponge-Like Materials in Sample Preparation: A Journey from Past to Present and into the Future

Enhancement of sensitivity for the spectrophotometric determination of carbaryl using dispersive liquid microextraction combined with dispersive μ-solid phase extraction

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