Results 11 to 20 of about 48,888 (233)

PANI/PTA/Fe<sub>3</sub>O<sub>4</sub> Nanocomposite Coated on Stainless-Steel Towards Efficient Solid-Phase Microextraction of Tetracycline From Human Urine Samples Prior to HPLC-DAD Analysis. [PDF]

open access: yesAnal Sci Adv
ABSTRACT Tetracycline (TC) is a commonly prescribed broad‐spectrum antibiotic, and its widespread use together with its persistence in biological matrices, particularly urine, has raised serious concerns related to clinical safety, public health and the emergence of antimicrobial resistance, underscoring the need for its accurate and sensitive ...
Orang SN, Amoli HS, Hasanzadeh M.
europepmc   +2 more sources

Modifying Headspace Sampling Environment Improves Detection of Boar Taint Compounds in Pork Fat Samples

open access: yesChemosensors, 2023
The extraction of boar taint compounds from pork fat samples was performed under various temperature (150, 300 and 450 °C) and atmosphere (air, nitrogen and reduced pressure) conditions.
Clément Burgeon   +3 more
doaj   +1 more source

High-throughput analytical methods employing microextraction techniques: Towards fast analyses lasting a few seconds

open access: yesAdvances in Sample Preparation, 2023
Green Analytical Chemistry (GAC) principles have influenced the development of analytical methods with minimal sample handling and operations, in contrast to conventional techniques, which are often laborious and time-consuming. Since the introduction of
Eduardo Carasek   +2 more
doaj   +1 more source

Microextraction for ambient ionization mass spectrometry analysis

open access: yesAdvances in Sample Preparation, 2022
Ambient ionization allows desorption of molecules and formation of ions directly from samples in native environment. Compared with traditional ionization techniques, it has unique features of simplicity and convenience, thus has attracted considerable ...
Yijing Liu, Yuhan Shang, Qiang Ma
doaj   +1 more source

Recent developments in microextraction techniques for detection and speciation of heavy metals

open access: yesAdvances in Sample Preparation, 2022
Analysis of heavy metals and their species in complex samples such as environment, biology and medicine is be of paramount importance due to their toxicity, persistence, and bioaccumulation.
Xiaochong Song, Xiaojia Huang
doaj   +1 more source

Solid-phase microextraction for bioconcentration studies according to OECD TG 305 [PDF]

open access: yes, 2012
An important aim of the European Community Regulation on chemicals and their safe use is the identification of (very) persistent, (very) bioaccumulative, and toxic substances.
Böhm, Leonard   +2 more
core   +2 more sources

Modern Approaches to Preparation of Body Fluids for Determination of Bioactive Compounds

open access: yesSeparations, 2019
The current clinical and forensic toxicological analysis of body fluids requires a modern approach to sample preparation characterized by high selectivity and enrichment capability, suitability for micro-samples, simplicity and speed, and the possibility
Katarzyna Madej, Wojciech Piekoszewski
doaj   +1 more source

Microfibers for juice analysis by solid-phase microextraction. [PDF]

open access: yes, 2008
In view of the interest in analyzing volatile compounds by SPME, the following five microfibers were tested, polydimethylsiloxane; polyacrylate; polydimethylsiloxane/divinylbenzene; carboxen/polydimethylsiloxane, and carbowax/divinylbenzene, to select ...
Bizzo, Humberto Ribeiro   +3 more
core   +3 more sources

Chemical derivatization processes applied to amine determination in samples of different matrix composition [PDF]

open access: yes, 2015
No abstract ...
Biziuk, Marek   +3 more
core   +1 more source

Theory of Solid-Phase Microextraction [PDF]

open access: yesJournal of Chromatographic Science, 2000
The main objective of this contribution is to describe the fundamental concepts associated with solid-phase microextraction (SPME). Theory provides insight when developing SPME methods and identifies parameters for rigorous control and optimization. A mathematical model has been developed to understand the principal processes of SPME by applying basic ...
openaire   +2 more sources

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