Response Surface Optimization of Acid Fuchsine Removal using Electro-Fenton coupled with Smartphone-based Colorimetry and Chemical Oxygen Demand Measurements

Saeed Zadkhast, Reza Tabaraki

In this study, the electro-Fenton method was used to remove AF dye from samples and RGBparameter analytical curve from smartphone-based colorimetry was used for the determination of dye concentration. Process variables were optimized by experimental design and response surface methodology (RSM). The amount of AF removal under optimal conditions was compared for spectrophotometer and smartphone methods. In this end, the COD value of the solution under optimal conditions was measured using a smartphone and compared with reference methods.

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Optimized Spectrophotometric Method for Creatine and Creatinine Quantification using Alpha Naphthol Sulpha Acetamide Dye

Khaled M. Elgendy, Adel Mansour Elgendy, Mounir Zaky Saad, Dina A. Abdelaleem

The primary goal of this research was to create a novel UV/Vis spectrophotometric method for precisely determining creatine and creatinine in biological samples using a newly synthesized azo dye, Alpha Naphthol Sulpha Acetamide (ASA), which has improved sensitivity, accuracy, and simplicity for clinical and pharmaceutical applications. This technique is more friendly to the environment than traditional colorimetric, enzymatic, chromatographic, and immunoassay procedures because it utilizes less hazardous chemicals and biodegradable surfactants.

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Quercetin Determination in Dietary Supplement and in Onion Peel Extracts using a Photoluminescent 3-mercatpopropionic acid (3MPA) CdTe Quantum Dots Analytical Probe

Juliana Machado de Carvalho Rodrigues, Juliana Teles Real, Marlin Jeannette Pedroso Peñafiel, Andrea Rosane da Silva, Ricardo Queiroz Aucelio

In this work, 3MPA-CdTe QDs were used as luminescent probe for the determination of quercetin in samples containing other flavonoids and vitamin C in aqueous medium. The method was simple and convenient for QUE determination in food supplement, manipulated formulation, as well as in yellow and red onion extracts. The method is cost effective, producing low quantities of waste as it requires low amount of organic solvents, micromolar amounts of the 3MPA-CdTe QDs also requiring small quantities of samples.

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Metabolomic Screening of Fecal Samples as an Alternative Method to initial Clinical Trials of Allergy to Cow`s Milk Protein on Infants

Kátia Suzane P. da Silva, Antonia Regina S. Gois, Tássia Brena B. C. da Costa, Wenes R. da Silva, Alberto Wisniewski Jr, Ricardo O. Silva, Sarah Cristina F. Vieira, Jackeline Motta-Franco, Ricardo Q. Gurgel

This work aimed to analyze the profile of intestinal metabolites in the fecal samples from symptomatic infants with and without cow's milk protein allergy (CMPA), evaluated by oral food challenge tests (OFC), and propose a diagnostic screening model by HRMS-FT-Orbitrap MS for earlier and safety diagnosis of CMPA. In this preliminary study, the model obtained using the metabolomic profile showed significant validation values, indicating the potential to distinguish between the two groups of interest, suggesting its use as a possible diagnostic tool for CMPA patients.

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Bulk Explosive Investigation: Chemical Analyses of Fuel-Oxidizer Explosive Mixtures Commonly Used in Criminal Actions
Lúcio Paulo Lima Logrado, Jez Willian Batista Braga

This work presents a simple workflow for sample preparation and analysis of bulk fuel-oxidizer explosive mixtures, which are frequently encountered in criminal activities globally, including in Brazil. The workflow employs various analytical techniques, including GC-MS, FTIR, Raman Spectroscopy, IC, LIBS, SEM/EDS, and XRD. This procedure provides a practical guide for forensic laboratories, enhancing their ability to analyze commonly encountered explosive samples with precision and reliability.

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“New Frontiers in Forensic Science: Looking to the Future” was the theme of the 9th ENQFor

This congress event aimed to encourage critical discussions, foster interdisciplinary collaborations, and prepare participants for the challenges and opportunities that await the forensic science community in the coming years.

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AOF by Combustion IC – Non-targeted Complemental Determination of PFAS in Aqueous Samples
Eleonora von Abercron, Udo Neist, Inge Klocke, Dr. Sebastian Georgii, Prof. Dr. Hubertus Brunn – Thermo Fisher Scientific

The goal of this study was to develop an automated method to determine a range of PFAS by combustion IC within environmentally relevant matrices and compare the results with existing highly specific methods based on liquid chromatography mass spectrometry (LC-MS/MS).

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Utilizing HRAM Orbitrap mass spectrometry to quantitate 106 drugs of abuse in urine
Courtney Patterson, Mark Tracy, Stephanie Samra, and Kerry Hassell – Thermo Fisher Scientific

The goal of this study was accurately confirm and quantitate 106 commonly analyzed drugs of abuse extracted from urine using the Thermo Scientific™ Vanquish™ Horizon ultra-high performance liquid chromatography (UHPLC) system coupled with the Thermo Scientific™ Orbitrap Exploris™ 120 mass spectrometer for forensic and clinical toxicology.

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Microwave assisted extraction of polychlorinated biphenyls from environmental samples
Milestone

Milestone’s ETHOS X equipped with fastEX-24 eT rotor was used in this study to prove its efficacy in the extraction of pesticides from environmental matrices.

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Combustion Ion Chromatography System – Fully automated analysis of halogens and sulfur

The Thermo Scientific combustion IC system eliminates complex sample preparation steps using an automated method that is highly sensitive, easy-to-use, saves time, and produces fewer environmental contaminants than other sample preparation procedures.

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Productivity redefined with the Orbitrap Exploris 120 Mass Spectrometer

The new Thermo Scientific Orbitrap Exploris 120 mass spectrometer accelerates your qualitative and quantitative confidence for both method development and everyday testing purposes. Leave the lab at the end of the day feeling productive and accomplished.

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Milestone ETHOS X – Advanced Microwave Extraction System for Environmental Laboratories

The ETHOS X with the fastEX-24 rotor allows for simultaneous extraction of 24 samples in 40 min with minimal solvent usage. By using large volume disposable glass vials, the fastEX-24 rotor simplifies handling and allows to achieve lower detection limits.

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The Young Talent in Analytical Chemistry Award will become the ‘Lauro Kubota Award for Young Talent in (Bio) Analytical Chemistry’

This change honors Lauro Kubota, a brilliant Full Professor at the Institute of Chemistry of Unicamp, and an internationally recognized researcher. The award will continue to recognize outstanding young researchers in (bio)analytical chemistry.

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Pittcon Conference & Expo

Pittcon is a friendly, welcoming environment where analytical chemists at all professional levels meet. Pittcon is a platform for sharing ideas and cooperating to form new ones. At Pittcon, you will find that spark that drives your research, your career, and above all, your scientific perspective forward.

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SelectScience® Pioneers online Communication and Promotes Scientific Success

SelectScience® informs through trusted lab product reviews, virtual events, thought-leading webinars, features on hot scientific topics, eBooks and more, independent online publisher SelectScience® provides scientists across the world with vital information about the best products and techniques to use in their work.

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CHROMacademy is the leading provider of eLearning for analytical science

For over 10 years, CHROMacademy has increased knowledge, efficiency and productivity across all applications of chromatography.

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