Results 61 to 70 of about 1,341 (180)

A Simple in Syringe Low Density Solvent-Dispersive Liquid Liquid Microextraction for Enrichment of Some Metal Ions Prior to Their Determination by High Performance Liquid Chromatography in Food Samples

Molecules, 2020
A simple and highly sensitive method is developed for the simultaneous determination of Ni2+, Cr2O72−, Co2+, and Hg2+ by using in syringe low density solvent-dispersive liquid liquid microextraction (ISLD-DLLME), followed by high performance liquid
Melasinee Laosuwan, Siriboon Mukdasai, Supalax Srijaranai   +2 more
doaj   +1 more source

A Simple Dispersive Liquid-Liquid Microextraction for the Determination of Copper II in the Water Samples of the Halfaya Oil Field in Maysan

Al-Mustansiriyah Journal of Science
Background: Copper, an important trace element for life on Earth, is crucial to many metabolic processes. This includes its role in the production and breakdown of nucleic acids and the metabolism of proteins, lipids, and carbohydrates.
Anwer S. Salim, Mohammed Z. Thani, Abdull Jabar KH. Atia, Hassan A. Fattah   +3 more
doaj   +1 more source

Molecularly Imprinted Poly(Trimethylolpropane Triacrylate‐Co‐Ethylene Glycol Dimethacrylate‐Co‐Methacrylic Acid) Monolithic Sorbent for Pipette‐Tip Solid‐Phase Extraction of N‐Nitrosodimethylamine in Medicaments

SEPARATION SCIENCE PLUS, Volume 8, Issue 9, September 2025.
ABSTRACT A novel pipette‐tip solid‐phase extraction method was developed using a molecularly imprinted monolithic sorbent composed of poly(trimethylolpropane triacrylate‐co‐ethylene glycol dimethacrylate‐co‐methacrylic acid) for the selective extraction of N‐nitrosodimethylamine from pharmaceutical formulations.
Allyson Leandro Rodrigues dos Santos, Bruna Bezerra de Melo, Anizio Marcio de Faria   +2 more
wiley   +1 more source

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

Contactless Conductivity Detection for Capillary Electrophoresis—Developments From 2020 to 2024

ELECTROPHORESIS, Volume 46, Issue 13-14, Page 829-862, July 2025.
ABSTRACT The review covering the development of capillary electrophoresis with capacitively coupled contactless conductivity detection from 2020 to 2024 is the latest in a series going back to 2004. The article considers applications employing conventional capillaries and planar lab‐on‐chip devices as well as fundamental and technical developments of ...
Peter C. Hauser, Pavel Kubáň
wiley   +1 more source

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

A Membrane‐Based Strategy for the High‐Throughput Determination of Steroidal Hormones in Human Urine Using Natural Deep Eutectic Solvents Combined With Liquid Chromatography Coupled With Diode Array Detector

Journal of Separation Science, Volume 48, Issue 7, July 2025.
ABSTRACT Estrogen hormones are present in the human body at varying concentrations, either naturally or through ingestion. At regulated levels, these compounds perform vital functions in the body. However, elevated concentrations are related to deregulation of several processes, such as abnormal cell proliferation, which can lead to the development of ...
Lucas Morés, Camila Will, Eduardo Carasek, Josias Merib   +3 more
wiley   +1 more source

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

Recent Trends in the Development of Green Analytical Sample Preparation Methods Using Advanced Materials

Journal of Separation Science, Volume 48, Issue 5, May 2025.
ABSTRACT Recent concern about the impact of environmental preservation and the health of living beings has opened new avenues for scientific research. In this context, contemporary analytical chemistry has been marked by the development of green analytical methodologies, which aim to reduce the use of toxic reagents and minimize the environmental ...
Eduardo Carasek, Amanda Vitória Santos, Francielle Crocetta Turazzi, Lucas Morés, Luciane Effting, Guilherme Mariz de Oliveira Barra   +5 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