Results 51 to 60 of about 23,617 (221)

Use of a new enrichment nanosorbent for speciation of mercury by FI-CV-ICP-MS [PDF]

open access: yes, 2015
Mercury is one of the most toxic environmental pollutants and its effects on human and ecosystem health are well known. All mercury species are toxic, with organic mercury compounds generally being more toxic than inorganic species.
Cano-Pavón, José Manuel   +3 more
core   +1 more source

Recent progress in solid- and liquid-phase microextraction methods for the extraction and quantification of current-use pesticides

open access: yesAdvances in Sample Preparation
The widespread use of pesticides has led to their pervasive presence in diverse environmental matrices such as water, air, and soil. Therefore, accurate and reliable determination of pesticides in various sample types is essential.
Seyedeh Bentolhoda Hosseinian   +2 more
doaj   +1 more source

GC × GC‐TOF MS and Sensory Profiling of Aroma Compounds in Magnolia Species: Effects of Processing Methods on Volatile Retention in M. wufengensis

open access: yesFlavour and Fragrance Journal, EarlyView.
The first comparative analysis of Magnolia scents reveals that M. wufengensis is characterised by a high aldehyde content, exhibiting a fresh, sweet, and fruity fragrance profile. Furthermore, freeze‐drying preserves 6.7 times more 2‐nonenal compared to shade‐drying, highlighting its superior efficacy in retaining key volatile compounds.
Xiaole Wang   +7 more
wiley   +1 more source

Use of Nanomaterial-Based (Micro)Extraction Techniques for the Determination of Cosmetic-Related Compounds

open access: yesMolecules, 2020
The high consumer demand for cosmetic products has caused the authorities and the industry to require rigorous analytical controls to assure their safety and efficacy.
José Grau   +2 more
doaj   +1 more source

Chromatography of beer [PDF]

open access: yes, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic techniques used for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Applications of Direct Injection Soft Chemical Ionisation-Mass Spectrometry for the Detection of Pre-blast Smokeless Powder Organic Additives [PDF]

open access: yes, 2019
Analysis of smokeless powders is of interest from forensics and security perspectives. This article reports the detection of smokeless powder organic additives (in their pre-detonation condition), namely the stabiliser diphenylamine and its derivatives 2-
A Jordan   +45 more
core   +2 more sources

Exploring the Potential of Microextraction in the Survey of Food Fruits and Vegetable Safety

open access: yesApplied Sciences, 2023
The increasing demand for food to feed an exponentially growing population, the fast evolution of climate changes, how global warming affects soil productivity, and the erosion of arable lands, create enormous pressure on the food chain.
Cristina V. Berenguer   +5 more
doaj   +1 more source

Developments of Dispersive Liquid-Liquid Microextraction Technique [PDF]

open access: yesChinese Journal of Analytical Chemistry, 2009
Abstract Dispersive liquid-liquid microextraction (DLLME) is a novel environmentally benign sample-preparation technique, possessing obvious advantages of simple operation with a high enrichment factor, low cost, and low consumption of organic solvent.
Xiao-Huan ZANG   +4 more
openaire   +1 more source

Real‐time quality and safety monitoring of fruit juice using paper‐based platform

open access: yesFood Biomacromolecules, EarlyView.
Schematic illustration of a paper‐based biosensor for rapid detection of fruit juice spoilage. Abstract Food spoilage and safety concerns still remain critically challenging within the fruit juice industry, especially as conventional detection methods, though precise, are often too time‐consuming, costly, and reliant on centralized laboratories.
Priti Das   +4 more
wiley   +1 more source

Sorbent-Based Microextraction Combined with GC-MS: A Valuable Tool in Bioanalysis

open access: yesChemosensors
Sample preparation is broadly recognized as the most critical, time-consuming, and error-prone step of a bioanalytical workflow. Over the years, the development of pretreatment methods aimed at the isolation and preconcentration of the target analytes ...
Marianna Ntorkou   +1 more
doaj   +1 more source

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