Results 21 to 30 of about 2,377,512 (309)

Purge and trap in-tube colorimetric detection method for the determination of ethanol in alcoholic and non-alcoholic beverages

open access: yesAdvances in Sample Preparation, 2022
A simple and cost-effective analytical approach based on the combination of purge and trap technique coupling with smartphone-based image analysis was developed for the sensitive detection of ethanol.
Waleed Alahmad   +5 more
doaj   +1 more source

Task-specific ionic liquids: Applications in sample preparation and the chemistry behind their selectivity

open access: yesAdvances in Sample Preparation, 2022
Task-specific ionic liquids (TSILs) represent a sub-family of ionic liquids characterized by their high specificity towards a target analyte or group of analytes.
Mauricio Llaver   +5 more
doaj   +1 more source

Vacuum-assisted headspace solid-phase microextraction and gas chromatography coupled to mass spectrometry applied to source rock analysis

open access: yesAdvances in Sample Preparation, 2022
Vacuum-assisted headspace solid phase microextraction (Vac-HSSPME) with high temperature of extraction was used for source-rock analysis. Optimization of extraction conditions was performed by Doehlert experimental design (DD) in gas chromatography ...
Breno J. Pollo   +4 more
doaj   +1 more source

Water activity of Czech dry-cured meat products: Influence of sampling point and sample preparation method [PDF]

open access: yes, 2023
Water activity (aw) is a key factor influencing dry-cured meat products' safety. However, the standards for determining aw do not specify how the laboratory sample for self-analysis should be prepared and adjusted for determination in this type of food ...
Jan Pivoňka   +4 more
core   +1 more source

Application of solid-phase microextraction in atomic spectrometry

open access: yesAdvances in Sample Preparation, 2022
With the growing requirements for the monitoring of heavy metals at an ultra-trace level in the environment and the real-time detection of toxic elements and their compounds for environmental pollution accidents, researchers devoted significant efforts ...
Yubin Su   +3 more
doaj   +1 more source

An efficient configuration for simultaneous electromembrane extraction of acidic and basic drugs on a chip

open access: yesAdvances in Sample Preparation, 2022
In the present study, a new chip was designed for simultaneous electromembrane extraction (EME) of acidic and basic analytes. The method followed by the HPLC-UV analysis, was used for simultaneous extraction and determination of trace amounts of target ...
Zohre Hashemlou   +2 more
doaj   +1 more source

A comprehensive review on the use of microextraction techniques in the analysis of cosmetic products

open access: yesAdvances in Sample Preparation, 2022
Microextraction techniques have gained special relevance since their appearance in the 90s, and the analysis of cosmetic products has not been immune to this trend.
Lorenza Schettino   +3 more
doaj   +1 more source

Sample preparation for nanoanalytical electron microscopy using the FIB lift-out method and low energy ion milling [PDF]

open access: yes, 2006
Thinning specimens to electron transparency for electron microscopy analysis can be done by conventional (2 - 4 kV) argon ion milling or focused ion beam (FIB) lift-out techniques.
Smith, W.   +6 more
core   +1 more source

A Tutorial on AGREEprep an Analytical Greenness Metric for Sample Preparation

open access: yesAdvances in Sample Preparation, 2022
Sample preparation is a key step in the analytical procedure and a critical component for achieving analytical greenness. AGREEprep is the first metric intended for evaluating the environmental impact of sample preparation methods.
Francisco Pena-Pereira   +3 more
doaj   +1 more source

Evaluation of sample preparation methods for label-free quantitative profiling of salivary proteome [PDF]

open access: yes, 2020
Saliva has become one of the more attractive body fluids for protein biomarker discovery studies because of its ease of collection, non-invasiveness and multiple samples can be collected from an individual at a single time point.
Sadowski, Pawel   +2 more
core   +1 more source

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