Results 91 to 100 of about 36,252 (237)

relative preconcentration

, 2014
Citation: 'relative preconcentration' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.R05274 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Differential Pulse Voltammetric Analysis of the New Psychoactive Drug 3β‐(4‐Fluorobenzoyloxy)tropane (fluorotropacocaine)

Electroanalysis, Volume 38, Issue 5, May 2026.
First voltammetric characterization of fluorotropacocaine and development of a selective DPV method for real‐sample analysis. A Design of Experiments (DoE)‐optimized Florisil‐SPE cleanup enables up to 50× enrichment and sensitive detection in urine, with high selectivity against excipients, endogenous components, and co‐occurring new psychoactive ...
Giancarla Alberti, Stefano Protti, Alessandra Bonanni, Azzurra Naso, Daniele Merli   +4 more
wiley   +1 more source

DEVELOPMENT OF CLOUD POINT EXTRACTION-SCANOMETRY, FOR THE PRECONCENTRATION AND DETERMINATION OF COLORLESS SPECIES: APPLICATION FOR THE DETERMINATION OF PHENYLALANINE

Química Nova
In this study, a simple, fast, portable, environment-friendly and inexpensive method, CPE-scanometry, is applied for the determination of Phenylalanine (Phe) amino acid.
Ardeshir Shokrollahi, Masuod Refahi
doaj   +1 more source

Functionalization of chitosan with 3,4-dihydroxybenzoic acid for the adsorption/collection of uranium in water samples and its determination by inductively coupled plasma-mass spectrometry [PDF]

, 2007
A chitosan resin derivatized with 3,4-dihydroxybenzoic acid moiety (CCTS-DHBA resin) was newly synthesized for the collection/concentration of trace uranium by using cross-linked chitosan (CCTS) as base material, and the adsorption behavior of uranium as
Gao, Yun Hua, Hakim, Lukman, Motomizu, Shoji, Oshima, Mitsuko, Oshita, Koji, Sabarudin, Akhmad, Takayanagi, Toshio   +6 more
core   +1 more source

preconcentration coefficient

, 2014
Citation: 'preconcentration coefficient' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04804 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests
openaire   +1 more source

Detection of Toxic Gases and Volatile Organic Compounds Using Highly Adsorptive Nanomaterials: A Comprehensive Assessment

EcoMat, Volume 8, Issue 5, May 2026.
This review highlights how nanomaterials with high adsorption capacities including carbon‐based structures, transition metal oxides, 2D layers, and zeolites enable sensitive and selective detection of toxic gases and VOCs. Their tailored properties and sensing mechanisms drive the development of next‐generation gas sensors for environmental and ...
Hamdy A. Ismail, Sabbah Ataya, Mohamed M. Goda, Ahmed G. Hussein, Ahmed Ramah, Ahmad G. Ramadan, Rashid Khan, Joy Djuansjah, Swellam W. Sharshir, Ahmed El‐Harairy   +9 more
wiley   +1 more source

Preconcentration of Co, Ni, Cd and Zn on naphthalene–2,4,6-trimorpholino-1,3,5-triazin adsorbent and flame atomic absorption determination [PDF]

Journal of the Serbian Chemical Society, 2010
A preconcentration method was developed for the determination of trace amounts of Co, Ni, Cd and Zn by atomic absorption spectrometry. The method is based on the retention of the metal cations by naphthalene–2,4,6-trimorpholino-1,3,5-triazin adsorbent in
TAYYEBEH MADRAKIAN, MOHAMMAD ALI ZOLFIGOL, FATHEMEH ABOULGHAZI   +2 more
doaj  

group preconcentration

, 2014
Citation: 'group preconcentration' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.G02707 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Towards a Scalable, AI‐Augmented Purification Platform for Amphetamine‐Type Stimulants: From Nanopolymer Synthesis to Predictive Process Simulation

Polymers for Advanced Technologies, Volume 37, Issue 5, May 2026.
ABSTRACT The prevalent formation of by‐products in conventional methamphetamine (MA) synthesis critically impairs final product purity, presenting a significant challenge that necessitates elaborate and costly downstream purification strategies. To overcome these limitations, this study introduces molecularly imprinted polymer (MIP)‐based nanopolymers ...
Emre Dokuzparmak, Emine Sezer, Esra Yaşar, Hilal Özçelik, Timuçin Güner, Fulden Ulucan Karnak, Sinan Akgöl   +6 more
wiley   +1 more source

Ionic Liquid—Solidified Floating Organic Drop Microextraction for the Preconcentration of Lead in Environmental Water Samples Prior to Its Determination with Electrothermal Atomic Absorption Spectrometry

Molecules
This research investigates the utilization of an ionic liquid combination of solidified floating organic drop micro-extraction (IL-SFODME) to augment the concentration of trace amounts of lead, working as a preliminary stage before electrothermal atomic ...
İlknur Durukan, Barış Yildiz
doaj   +1 more source