Results 51 to 60 of about 31,974 (218)

Optimization of a Procedure for the Determination of Some Heavy Metals in Herbal Medicines by Atomic Absorption Spectroscopy

Natural Product Communications
Objectives This study aims to develop and validate a reliable procedure for the determination of cadmium, lead, arsenic, and mercury in herbal medicines using atomic absorption spectroscopy.
Nhat Duy To, Anh Tran Thi Phuong, Triet Thanh Nguyen, Hoang Anh Pham, Quoc-Ky Truong   +4 more
doaj   +1 more source

Multimodal Fluorescent MOF@BODIPY Platform: Bridging Sensing and Mechanistic Insight

Chemistry – A European Journal, EarlyView.
ABSTRACT Hybrid metal–organic frameworks (MOFs) that integrate organic chromophores constitute powerful platforms for optical sensing by combining structural order with tunable photophysics. Incorporating photoresponsive chromophores into MOFs enables sensitive probing of guest–framework interactions through well‐defined luminescent signatures. Herein,
Alejandro Cortés‐Villena, Paula Rodrigo‐Martínez, José A. Sáez, Pablo Gaviña, Emilio Pardo, Raquel E. Galian, Sergio Armenta, Héctor Martínez‐Pérez‐Cejuela, José Manuel Herrero‐Martínez   +8 more
wiley   +1 more source

Determination of rapid and sensitive extraction of colchicine from Colchicum baytopiorum and Colchicum decaisnei leaves by HPLC-UV method

Journal of Pharmaceutical and Biomedical Analysis Open
This study focuses on the extraction and analysis of colchicine, a bioactive alkaloid, from the leaves of two endemic species, Colchicum baytopiorum (n = 13) and Colchicum decaisnei (n = 11), collected from Antalya, Türkiye.
Efe Deniz, Ümit Babacan, Ceren Selim, Mehmet Fatih Cengiz   +3 more
doaj   +1 more source

Thermal Degradation of PFAS in Different Scales: Measurement of Hydrogen Fluoride (HF)

Chemie Ingenieur Technik, EarlyView.
The communication article is about the challenges to balance a combustor in the case of fluorine when incinerating PFAS containing materials. Several analytical methods are compared: for continuous measurement, FTIR with TDLS. The detected fluorine species are further compared with results upon IC and pyrohydrolysis for discontinuous measurements in ...
Hans‐Joachim Gehrmann, Vanessa Nuredin, Krasimir Aleksandrov, Steffen Tonndorf, Manuela Hauser, Björn Meermann, Dieter Stapf   +6 more
wiley   +1 more source

Validation of a Thin-Layer Chromatography for the Determination of Hydrocortisone Acetate and Lidocaine in a Pharmaceutical Preparation

The Scientific World Journal, 2014
A new specific, precise, accurate, and robust TLC-densitometry has been developed for the simultaneous determination of hydrocortisone acetate and lidocaine hydrochloride in combined pharmaceutical formulation.
Małgorzata Dołowy, Katarzyna Kulpińska-Kucia, Alina Pyka   +2 more
doaj   +1 more source

Spectrophotometric Determination of Sunset Yellow (E-110) in Powdered Beverages and Pharmaceutical Preparations After Cloud Point Extraction Method

Journal of the Turkish Chemical Society, Section A: Chemistry, 2018
In this study, for the first time Brij 58 was used for the spectrophotometric determination of sunset yellow (SY) (E-110) in pharmaceutical preparations and powdered beverages after cloud point extraction (CPE).
Tufan Güray
doaj   +1 more source

Experimental methods in chemical engineering: Cyclic voltammetry—CV

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Cyclic voltammetry (CV) is a foundational electroanalytical technique for investigating redox behaviour and evaluating material performance across fields such as molecular electrochemistry, electrocatalysis, sensing, and energy storage. Despite its widespread use, a gap remains between formal electrochemical theory and the practical data ...
Yasser Matos‐Peralta, Christopher Panaritis, JoElen Hagler, Clara Santato, Gregory S. Patience   +4 more
wiley   +1 more source

Voltammetric quantitation of nitazoxanide by glassy carbon electrode

Journal of Pharmaceutical Analysis, 2013
The present study reports voltammetric reduction of nitazoxanide in Britton–Robinson (B–R) buffer by cyclic and square-wave voltammetry at glassy carbon electrode.
Rajeev Jain, Rajeev Kumar Yadav, Jahangir Ahmad Rather   +2 more
doaj   +1 more source

Understanding Consumption of Illicit Drugs and New Psychoactive Substances in Australia by Triangulating Drug Checking and Wastewater‐Based Epidemiology

Drug Testing and Analysis, EarlyView.
First Australian study combining wastewater‐based epidemiology and drug checking, demonstrating how complementary data sources enhance monitoring of illicit drugs and emerging psychoactive substances during high‐use periods. ABSTRACT Consumption of psychotropic drugs is a major economic and public health challenge in Australia.
Muhammad Usman, Malcolm McLeod, Dhayaalini Nadarajan, Joseph Clokey, Pritesh Prasad, Rory Verhagen, Benjamin Tscharke, Maurizio Quinto, Richard Bade   +8 more
wiley   +1 more source

The Validation of Chromatographic Methods in the Detection of Cocaine and Diluents in Drugs Seized by the Civil Police in the State of Espírito Santo

Orbital: The Electronic Journal of Chemistry
Over the years, police have seized tons of cocaine in the form of cocaine hydrochloride and crack, which are often adulterated by traffickers. This work aims to use GC/MS and HPLC to determine the limit of detection (LoD) and limit of quantification ...
Karoline P. Miossi, Thays C. Valin, Ramon R. T. Bottocim, Bruno Q. Araújo, Wanderson Romão , Eustaquio V. R. de Castro, Valdemar Lacerda Jr., Alvaro Cunha Neto   +7 more
doaj   +1 more source