Results 31 to 40 of about 1,468,518 (161)

Determination of Gold in Various Environment Samples by Flame Atomic Absorption Spectrometry Using Dispersive Liquid–Liquid Microextraction Sampling

Croatica Chemica Acta, 2015
A new dispersive liquid–liquid microextraction separation/preconcentration procedure as a rapid sample-preparation technique is proposed for detection of ultra trace amounts of Au(III) in various media by flame atomic absorption spectrometry using 1,5 ...
Şerife Saçmacı, Şenol Kartal, Gülçin Kalkan   +2 more
doaj   +1 more source

Monitoring and Mitigation Strategies for Hazardous Compounds in Chinese Rice Wine (Huangjiu): A Comprehensive Review

Food Safety and Health, EarlyView.
This review elucidates the formation pathways and detection technologies for ethyl carbamate, biogenic amines, and higher alcohols in Huangjiu. It concludes that integrated control frameworks are essential to decouple safety risks from the metabolic processes responsible for flavor development.
Lulu Liu, Zhiqiang Kong, Lin Li, Yifan Zhang, Bei Fan, Minmin Li   +5 more
wiley   +1 more source

Dispersive liquid-liquid microextraction for the simultaneous separation of trace amounts of zinc and cadmium ions in water samples prior to flame atomic absorption spectrometry determination

Química Nova, 2012
In the proposed method, carbon tetrachloride and ethanol were used as extraction and dispersive solvents. Several factors that may be affected on the extraction process, such as extraction solvent, disperser solvent, the volume of extraction and ...
Sayed Zia Mohammadi, Yar Mohammad Baghelani, Fatemeh Mansori, Tayebeh Shamspur, Daryoush Afzali   +4 more
doaj   +1 more source

Analytical Approaches to Address Challenges in the Analysis of Cannabinoids in Vascular Matrices Using Mass Spectrometry

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Phytocannabinoids are bioactive metabolites derived from the Cannabis sativa plant. They have garnered attention due to their recreational uses and therapeutic potential. Although various analytical strategies have been employed for their analysis, mass spectrometry (MS) coupled to chromatographic separation is superior due to its sensitivity ...
Radwa Mahmoud, Robert B. Laprairie, Anas El‐Aneed   +2 more
wiley   +1 more source

Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Combined with Low Solvent Consumption for Determination of Polycyclic Aromatic Hydrocarbons in Seawater by GC-MS

, 2011
Ultrasound-assisted dispersive liquid-liquid microextraction (USA-DLLME) with low solvent consumption was demonstrated for gas chromatography-mass spectrometry (GC-MS) determination of 16 typical polycyclic aromatic hydrocarbons (PAHs) in seawater ...
Chunyang Liao, Lingxin Chen, Chen, Lingxin, Li, Jinhua, Song, Xingliang, Xingliang Song, Liao, Chunyang, Jinhua Li   +7 more
core   +1 more source

Advanced modelling and visualisation of liquid-liquid separations of complex sample components, with variable phase distribution and mode of operation [PDF]

, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This research is about liquid-liquid chromatography modelling.
De Folter, Jozefus Johannes Martinus
core   +6 more sources

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Dispersive liquid-liquid microextraction methods for the determination of Triazine herbicides in aqueous samples [PDF]

, 2012
Dispersive liquid-liquid microextraction (DLLME) and dispersive liquid-liquid microextraction based on solidification of floating organic droplets (DLLME-SFO) methods coupled with gas chromatography-mass spectrometry (GC-MS) were developed for the ...
Abbas Ahmed, Hana Hassan
core  

Solidification floating organic drop for dispersive liquid–liquid microextraction estimation of copper in different water samples

Green Processing and Synthesis
A selective, sensitive, and eco-friendly microextraction method followed by the solidified floating organic drop-dispersive liquid–liquid microextraction was investigated to determine copper(ii) ions by spectrophotometry.
Fraihat Safwan Mohammad
doaj   +1 more source

Ion pair-dispersive liquid-liquid microextraction of trace amount of rhodium ion in water and road dust samples prior to flame atomic absorption spectrometry determination

Química Nova, 2011
A simple ion pair-dispersive liquid-liquid microextraction method was proposed for preconcentration trace amounts of rhodium. An ion association complex of RhCl4- and tetradecyldimetylbenzylamonium was extracted into cholorobenzene.
Daryoush Afzali, Ali Ghazizadeh, Hassan Salari   +2 more
doaj   +1 more source