scholarly journals Catching the elusive persistent and mobile organic compounds: Novel sample preparation and advanced analytical techniques

2020 ◽  
Vol 25 ◽  
pp. e00078 ◽  
Author(s):  
Luisa F. Angeles ◽  
Diana S. Aga
Keyword(s):  
Sample Preparation ◽  
Organic Compounds ◽  
Analytical Techniques

Green sample preparation of complex matrices: towards sustainable separations of organic compounds based on the biorefinery concept

2016 ◽  
Vol 88 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
Vânia G. Zuin
Keyword(s):  
Sample Preparation ◽  
Organic Compounds ◽  
Analytical Techniques ◽  
Complex Matrices ◽  
Extraction And Purification ◽  
Sustainable Extraction ◽  
Green Sample

AbstractThe development and application of green analytical techniques aiming at the sample preparation of complex matrices for the study of organic compounds have been growing considerably over the last 15 years. Miniaturisation, automation and solventless techniques are gaining importance in this field, associated to others, as is the case of metrics. However, the unreflected use of the so-called green analytical techniques “might lead to doing the same things better, rather than rethinking solutions altogether”. Some limits and potentialities of the green sample preparation towards sustainable separations of organic compounds using the biorefinery concept will be also discussed in this paper, a promising biobased route that can integrate sustainable extraction and purification processes in a whole complete circular unity.

Recent Trends in the Development of Green Microextraction Techniques for the Determination of Hazardous Organic Compounds in Wine

2019 ◽  
Vol 15 (7) ◽  
pp. 788-800 ◽  
Author(s):  
Natasa P. Kalogiouri ◽  
Victoria F. Samanidou
Keyword(s):  
Sample Preparation ◽  
Solid Phase Extraction ◽  
Organic Compounds ◽  
Method Development ◽  
Solid Phase ◽  
Stir Bar Sorptive Extraction ◽  
Phase Extraction ◽  
Microextraction Techniques ◽  
Hazardous Organic Compounds

Background:The sample preparation is the most crucial step in the analytical method development. Taking this into account, it is easily understood why the domain of sample preparation prior to detection is rapidly developing. Following the modern trends towards the automation, miniaturization, simplification and minimization of organic solvents and sample volumes, green microextraction techniques witness rapid growth in the field of food quality and safety. In a globalized market, it is essential to face the consumers need and develop analytical methods that guarantee the quality of food products and beverages. The strive for the accurate determination of organic hazards in a famous and appreciated alcoholic beverage like wine has necessitated the development of microextraction techniques.Objective:The objective of this review is to summarize all the recent microextraction methodologies, including solid phase extraction (SPE), solid phase microextraction (SPME), liquid-phase microextraction (LPME), dispersive liquid-liquid microextraction (DLLME), stir bar sorptive extraction (SBSE), matrix solid-phase dispersion (MSPD), single-drop microextraction (SDME) and dispersive solid phase extraction (DSPE) that were developed for the determination of hazardous organic compounds (pesticides, mycotoxins, colorants, biogenic amines, off-flavors) in wine. The analytical performance of the techniques is evaluated and their advantages and limitations are discussed.Conclusion:An extensive investigation of these techniques remains vital through the development of novel strategies and the implication of new materials that could upgrade the selectivity for the extraction of target analytes.

Recent Developments in CE-MS Based Metabolomics

2020 ◽  
Vol 16 ◽  
Author(s):  
Mustafa Çelebier ◽  
Merve Nenni
Keyword(s):  
Sample Preparation ◽  
Scientific Information ◽  
Analytical Techniques ◽  
Living Organism ◽  
Analytical Technique ◽  
Ionic Compounds ◽  
Recent Sample ◽  
Recent Developments ◽  
Endogenous Metabolites ◽  
Preparation Techniques

Background: Metabolomics has gained importance in clinical applications over the last decade. Metabolomics studies are significant because the systemic metabolome is directly affected by disease conditions. Metabolome-based biomarkers are actively being developed for early diagnosis and to indicate the stage of specific diseases. Additionally, understanding the effect of an intervention on a living organism at the molecular level is a crucial strategy for understanding novel or unexpected biological processes. Results: The simultaneous improvements in advanced analytical techniques, sample preparation techniques, computer technology, and databank contents has enabled more valuable scientific information to be gained from metabolomics than ever before. With over 15,000 known endogenous metabolites, there is no single analytical technique capable of analyzing the whole metabolome. However, capillary electrophoresis-mass spectrometry (CE-MS) is a unique technique used to analyze an important portion of metabolites not accessible by liquid chromatography or gas chromatography techniques. The analytical capability of CE, combined with recent sample preparation techniques focused on extracting polar-ionic compounds, make CE-MS a perfect technique for metabolomic studies. Conclusion: Here, previous reviews of CE-MS based metabolomics are evaluated to highlight recent improvements in this technique. Specifically, we review papers from the last two years (2018 and 2019) on CE-MS based metabolomics. The current situation and the challenges facing metabolomic studies are discussed to reveal the high potential of CE-MS for further studies, especially in biomarker development studies.

Sample preparation for the analysis of volatile organic compounds in air and water matrices

2007 ◽  
Vol 1153 (1-2) ◽  
pp. 130-144 ◽  
Author(s):  
Kristof Demeestere ◽  
Jo Dewulf ◽  
Bavo De Witte ◽  
Herman Van Langenhove
Keyword(s):  
Volatile Organic Compounds ◽  
Sample Preparation ◽  
Organic Compounds ◽  
Volatile Organic

scholarly journals Analytical and Sample Preparation Techniques for the Determination of Food Colorants in Food Matrices

Foods ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 58 ◽  
Author(s):  
Konstantina Ntrallou ◽  
Helen Gika ◽  
Emmanouil Tsochatzis
Keyword(s):  
Sample Preparation ◽  
Food Industry ◽  
Analytical Techniques ◽  
Food Product ◽  
Food Matrix ◽  
Nutritional Properties ◽  
Food Colorants ◽  
Food Matrices ◽  
Preparation Techniques

Color additives are widely used by the food industry to enhance the appearance, as well as the nutritional properties of a food product. However, some of these substances may pose a potential risk to human health, especially if they are consumed excessively and are regulated, giving great importance to their determination. Several matrix-dependent methods have been developed and applied to determine food colorants, by employing different analytical techniques along with appropriate sample preparation protocols. Major techniques applied for their determination are chromatography with spectophotometricdetectors and spectrophotometry, while sample preparation procedures greatly depend on the food matrix. In this review these methods are presented, covering the advancements of existing methodologies applied over the last decade.

scholarly journals Analytical sonochemistry; developments, applications, and hyphenations of ultrasound in sample preparation and analytical techniques

2012 ◽  
Vol 10 (4) ◽  
pp. 938-976 ◽  
Author(s):  
Shahram Seidi ◽  
Yadollah Yamini
Keyword(s):  
Analytical Chemistry ◽  
Sample Preparation ◽  
Biological Samples ◽  
Inorganic Compounds ◽  
Analytical Techniques ◽  
Theoretical Understanding ◽  
Environmental And Biological Samples ◽  
Modern Analytical ◽  
Soil And Water

AbstractUltrasonic assistance is one of the great successes of modern analytical chemistry, which uses this energy for a variety of purposes in relation to sample preparation and development of methods for the analysis of numerous contaminants including organic and inorganic compounds. This review will attempt to provide an overview of more recent applications of ultrasound in different environmental and biological samples such as food, soil and water as well as a brief description of the theoretical understanding of this method. Also, the possibility of coupling ultrasound with other analytical techniques will be discussed.

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