Results 91 to 100 of about 4,299 (226)

Ultrasound-Assisted Low-Density Solvent Dispersive Liquid-Liquid Extraction for the Determination of Amphetamines in Biological Samples Using Gas Chromatography-Mass Spectrometry

Journal of Forensic Science and Medicine, 2015
In order to control drug crime effectively, it is necessary to develop selective analytical methods suitable for unambiguous identification and determination of drugs in illicit samples and biological matrices.
Liang Meng, Wenwen Zhang, Pinjia Meng, Yuxian Liu   +3 more
doaj   +1 more source

The role of residual (veterinary) antibiotics in chemical exposome analysis: Current progress and future perspectives

Comprehensive Reviews in Food Science and Food Safety, Volume 24, Issue 2, March 2025.
Abstract Humans are exposed to a complex mixture of environmental and food‐related chemicals throughout their lifetime. Exposome research intends to explore the nongenetic, that is, environmental causes of chronic disease and their interactions comprehensively.
Md Zakir Hossain, Max L. Feuerstein, Benedikt Warth   +2 more
wiley   +1 more source

Hyphenation of single-drop microextraction with laser-induced breakdown spectrometry for trace analysis in liquid samples: a viability study [PDF]

, 2015
In this work, an analytical methodology based on single drop microextraction (SDME) followed by Laser-Induced Breakdown Spectrometry (LIBS) has been tested for trace metal determination in liquid samples.
Aguirre Pastor, Miguel Ángel, Canals, Antonio, Hidalgo, Montserrat, Nikolova, H.   +3 more
core   +2 more sources

Feasibility of DLLME for the Extraction and Preconcentration of As and Cd in Sugar for Further Determination by ICP-MS

Journal of the Brazilian Chemical Society, 2017
A method for determining low levels of As and Cd by dispersive liquid-liquid microextraction (DLLME) and inductively coupled plasma mass spectrometry (ICP-MS) was proposed. The following parameters that affect extraction efficiency were investigated: type and volume of extraction solvent (1000 µL acetone), type and volume of dispersive solvent (75 µL ...
Seeger, Tassia S., Vecchia, Paula Dalla, Machado, Eduarda Q., Reinke, Karine, Mesko, Marcia F., Duarte, Fabio A.   +5 more
openaire   +3 more sources

Determination of metals in Pork Lard: A rapid and low cost sample preparation by RP-DLLME

, 2022
Abstract ABSTRAT In this work, a new method was proposed for determination of Cu, Fe, Mg, Mn and Ni in pork lard by flame atomic absorption spectrometry (F AAS) was developed using reverse phase dispersive liquid-liquid microextraction (RP-DLLME) for sample preparation.
Mayara Patricia Oliveira Santos, Nicoli Andressa Carboni, Eder Lisandro Moraes Flores, Cristiane Canan, Oldair Donizeti Leite, Deisy Alessandra Drunker   +5 more
openaire   +1 more source

Food profiling goes green: Sustainable analysis strategies for food authentication

ELECTROPHORESIS, Volume 46, Issue 3-4, Page 167-182, February 2025.
Abstract Omics technologies, such as genomics, proteomics, metabolomics, isotopolomics, and metallomics, are important tools for analytical verification of food authenticity. However, in many cases, their application requires the use of high‐resolution technological platforms as well as careful consideration of sample collection, storage, preparation ...
Marina Creydt, Markus Fischer
wiley   +1 more source

From Complexity to Clarity: Expanding Metabolome Coverage With Innovative Analytical Strategies

Journal of Separation Science, Volume 48, Issue 2, February 2025.
ABSTRACT Metabolomics, a powerful discipline within systems biology, aims at comprehensive profiling of small molecules in biological samples. The challenges of biological sample complexity are addressed through innovative sample preparation methods, including solid‐phase extraction and microextraction techniques, enhancing the detection and ...
Kanukolanu Aarika, Ramijinni Rajyalakshmi, Lakshmi Vineela Nalla, Siva Nageswara Rao Gajula   +3 more
wiley   +1 more source

Liquid Phase and Microwave-Assisted Extractions for Multicomponent Phenolic Pattern Determination of Five Romanian Galium Species Coupled with Bioassays

Molecules, 2019
Background: Galium is a plant rich in iridoid glycosides, flavonoids, anthraquinones, and small amounts of essential oils and vitamin C. Recent works showed the antibacterial, antifungal, antiparasitic, and antioxidant activity of this plant genus ...
Andrei Mocan, Alina Diuzheva, Sabin Bădărău, Cadmiel Moldovan, Vasil Andruch, Simone Carradori, Cristina Campestre, Angela Tartaglia, Marta De Simone, Dan Vodnar, Matteo Tiecco, Raimondo Germani, Gianina Crișan, Marcello Locatelli   +13 more
doaj   +1 more source

Determination of OCPs and PCBs in environmental water samples by GC-DLLME optimized by Response Surface Methodology

Mongolian Journal of Chemistry, 2019
A new sample preparation procedure to determine seven organochlorine pesticides and seven polychlorinated biphenyls in environmental water samples by using a combination of ultrasonic-assisted solvent extraction and dispersive liquid-liquid micro-extraction was established, and the extracted analytes were analyzed by gas chromatography coupled with ...
Badgaa Amarsanaa, Jiang He, Fujin Zhang, Otgonbayar Khureldavaa, Dekun Hou   +4 more
openaire   +3 more sources

Microextraction of Xenobiotics and Biomolecules from Different Matrices on Nano Structures [PDF]

, 2014
Sample preparation is the backbone of any analytical procedure; it involves extraction and pre-concentration of the desired analytes; often at trace levels.
Ali, Imran, Hussain, Iqbal, Kamaruzaman, Sazlinda, Sanagi, Mohd Marsin, Wan Ibrahim, Wan Aini, Yahaya, Noorfatimah, Zainal Abidin, Nurul Nabilah   +6 more
core   +1 more source