scholarly journals Considerations on the application of miniaturized sample preparation approaches for the analysis of organic compounds in environmental matrices

2012 ◽  
Vol 10 (3) ◽  
pp. 433-449 ◽  
Author(s):  
Francisco Pena-Pereira ◽  
Regina Duarte ◽  
Armando Duarte
Keyword(s):  
Organic Matter ◽  
Sample Preparation ◽  
Organic Pollutants ◽  
Environmental Samples ◽  
Solid Phase ◽  
Analytical Techniques ◽  
Environmental Research ◽  
Environmental Matrices ◽  
Selective Enrichment ◽  
Target Analytes

AbstractThe miniaturization and improvement of sample preparation is a challenge that has been fulfilled up to a point in many fields of analytical chemistry. Particularly, the hyphenation of microextraction with advanced analytical techniques has allowed the monitoring of target analytes in a vast variety of environmental samples. Several benefits can be obtained when miniaturized techniques such as solid-phase microextraction (SPME) or liquid-phase microextraction (LPME) are applied, specifically, their easiness, rapidity and capability to separate and pre-concentrate target analytes with a negligible consumption of organic solvents. In spite of the great acceptance that these green sample preparation techniques have in environmental research, their full implementation has not been achieved or even attempted in some relevant environmental matrices. In this work, a critical review of the applications of LPME and SPME techniques to isolate and pre-concentrate traces of organic pollutants is provided. In addition, the influence of the environmental matrix on the effectiveness of LPME and SPME for isolating the target organic pollutants is addressed. Finally, unsolved issues that may hinder the application of these techniques for the extraction of dissolved organic matter from environmental samples and some suggestions for developing novel and less selective enrichment and isolation procedures for natural organic matter on the basis of SPME and LPME are included.

The Benefits and Limitations of Methods Development in Solid Phase Extraction: Mini Review

2014 ◽  
Vol 69 (4) ◽  
Author(s):  
Norfahana Abd-Talib ◽  
Siti Hamidah Mohd-Setapar ◽  
Aidee Kamal Khamis
Keyword(s):  
Sample Preparation ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Liquid Extraction ◽  
Phase Extraction ◽  
Methods Development ◽  
Liquid Liquid Extraction ◽  
Target Analytes ◽  
Two Phases ◽  
Preparation Techniques

Over recent years, there has been an explosive growth of sample preparation techniques. Sample preparation is in most cases meant to be the isolation online or offline concentration of some components of interest or target analytes. Solid phase extraction (SPE) is a very popular technique nowadays in sample preparation. The principal is quite similar with liquid- liquid extraction (LLE) which involves partition of solutes between two phases. But, there are some differences between them and some benefits and limitations of difference types of SPE technique like presented in this paper.

scholarly journals Application of Extraction and Determination Based on Deep Eutectic Solvents in Different Types of Environmental Samples

Water ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 46
Author(s):  
Yonghua Wang ◽  
Na Li ◽  
Shengnan Jiang ◽  
Xi Chen
Keyword(s):  
Extraction Efficiency ◽  
Deep Eutectic Solvents ◽  
Extraction Methods ◽  
Water Sources ◽  
Environmental Research ◽  
Environmental Matrices ◽  
Controllable Synthesis ◽  
Surrounding Environment ◽  
Target Analytes ◽  
Different Types

Water sources are an indispensable resource for human survival. Monitoring the pollution status of the surrounding environment is necessary to protect water sources. Research on the environmental matrix of deep eutectic solvents (DESs) has expanded rapidly because of their high extraction efficiency for various target analytes, controllable synthesis, and versatile structure. Following the synthesis of hydrophobic deep eutectic solvents (HDESs), their application in aqueous matrices broadened greatly. The present review conducted a survey on the pollutant extraction methods based DESs in environmental matrices from two aspects, application methods and matrix types; discussed the potential risk of DESs to the environment and future development trends; and provided some references for researchers to choose DES-based extraction methods for environmental research.

scholarly journals Recent advances in analysis of trace elements in environmental samples by X-ray based techniques (IUPAC Technical Report)

2019 ◽  
Vol 91 (6) ◽  
pp. 1029-1063 ◽  
Author(s):  
Roberto Terzano ◽  
Melissa A. Denecke ◽  
Gerald Falkenberg ◽  
Bradley Miller ◽  
David Paterson ◽  
...  
Keyword(s):  
Trace Elements ◽  
Environmental Samples ◽  
Analytical Techniques ◽  
Anthropogenic Pollution ◽  
Chemical Extraction ◽  
Environmental Matrices ◽  
Environmental Sciences ◽  
X Ray ◽  
Environmental Media ◽  
Living Organisms

Abstract Trace elements analysis is a fundamental challenge in environmental sciences. Scientists measure trace elements in environmental media in order to assess the quality and safety of ecosystems and to quantify the burden of anthropogenic pollution. Among the available analytical techniques, X-ray based methods are particularly powerful, as they can quantify trace elements in situ. Chemical extraction is not required, as is the case for many other analytical techniques. In the last few years, the potential for X-ray techniques to be applied in the environmental sciences has dramatically increased due to developments in laboratory instruments and synchrotron radiation facilities with improved sensitivity and spatial resolution. In this report, we summarize the principles of the X-ray based analytical techniques most frequently employed to study trace elements in environmental samples. We report on the most recent developments in laboratory and synchrotron techniques, as well as advances in instrumentation, with a special attention on X-ray sources, detectors, and optics. Lastly, we inform readers on recent applications of X-ray based analysis to different environmental matrices, such as soil, sediments, waters, wastes, living organisms, geological samples, and atmospheric particulate, and we report examples of sample preparation.

scholarly journals Developments of solid-phase microextraction fiber coatings for environmental pharmaceutical and personal care products analysis

2018 ◽  
Vol 37 (2) ◽  
Author(s):  
Omar J. Portillo-Castillo ◽  
Rocío Castro-Ríos ◽  
Abelardo Chávez-Montes ◽  
Azucena González-Horta ◽  
Norma Cavazos-Rocha ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Environmental Samples ◽  
Solid Phase Microextraction ◽  
Emerging Contaminants ◽  
Solid Phase ◽  
Personal Care Products ◽  
Preparation Technique ◽  
Personal Care ◽  
Promising Alternative ◽  
Monitoring Protocols

Abstract Solid-phase microextraction (SPME) is a sample preparation technique with many applications that is being continuously developed. In this technique, the type of fiber coating plays a crucial role for extraction efficiency. Currently available commercial coatings have certain drawbacks that have been overcome by the development of new coatings based on novel materials; these have improved the efficiency of extraction, selectivity and stability of commercial coatings. Pharmaceutical and personal care products (PPCPs) are one of the most important groups of emerging contaminants; however, some studies suggest that these compounds can cause adverse health effects. No official monitoring protocols for these compounds are currently available, so the establishment of analytical methods that allow their determination in environmental samples is required. The complexity of environmental samples together with the low concentration levels of these compounds makes necessary the use of sample preparation techniques capable of removing interferences, as well as preconcentrated analytes, and SPME is a very promising alternative to achieve this. This review describes the recent developments in SPME with classical and novel coatings and its applications for PPCP determination in environmental samples.

Recent Advances in Miniaturized Microextraction Techniques for the Determination of Bisphenols in Environmental Samples: An Overview of the last two Decades

2020 ◽  
Vol 16 ◽  
Author(s):  
Athanasios Tsalbouris ◽  
Natasa P. Kalogiouri ◽  
Victoria F. Samanidou
Keyword(s):  
Environmental Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Precise Determination ◽  
Stir Bar Sorptive Extraction ◽  
Environmental Matrices ◽  
Industrial Chemicals ◽  
Recent Advances ◽  
Microextraction Techniques

Background: Bisphenols are major industrial chemicals that have raised public concern due to their endocrine disrupting properties and toxicity. Sample preparation is the most critical step for determination of bisphenols, especially if the analyst has to deal with environmental samples which are complex matrices and the co-extraction and co-elution of other relevant compounds results in the enhancement or suppression of the analyte signal. The need for the precise determination of bisphenols has signaled the development of effective microextraction techniques according to the Green Analytical Chemistry (GRAC) guidelines. Objective: The objective of this review is to gather and discuss all the recent advances in the development of microextraction techniques such as solid phase extraction (SPE), solid phase microextraction (SPME), magnetic solid phase microextraction (MSPE), liquid-phase microextraction (LPME), dispersive liquid-liquid microextraction (DLLME), stir bar sorptive extraction (SBSE), matrix solid-phase dispersion (MSPD), that have been successfully applied in the extraction of bisphenols from environmental matrices. Conclusion: The analytical performance of the proposed techniques is critically discussed highlighting the potential and the limitations of each method.

Analysis of volatile organic compounds in environmental matrices by nitrogen-assisted headspace solid-phase extraction

2019 ◽  
Vol 43 (22) ◽  
pp. 8788-8795 ◽  
Author(s):  
Jing Gao ◽  
Chuntao Zhang ◽  
Zheng Cheng ◽  
Donghui Liu ◽  
Zhiqiang Zhou ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Solid Phase Extraction ◽  
Organic Compounds ◽  
Organic Pollutants ◽  
Solid Phase ◽  
Phase Extraction ◽  
Environmental Matrices ◽  
Pretreatment Method ◽  
Volatile Organic ◽  
Volatile Organic Pollutants

A novel pretreatment method named nitrogen-assisted headspace solid-phase extraction (NA/HS-SPE) was developed for the analysis of volatile organic pollutants in water, sediment, honey, and juice.

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