Removal of Organic Pollution in the Water Environment

The development of civilization entails a growing demand for consumer goods. A side effect of the production and use of these materials is the production of solid waste and wastewater. Municipal and industrial wastewater usually contain a large amount of various organic compounds and are the main source of pollution of the aquatic environment with these substances. Therefore, the search for effective methods of wastewater and other polluted water treatment is an important element of caring for the natural environment. This Special Issue contains nine peer-review articles presenting research on the determination and removal of environmentally hazardous organic compounds from aqueous samples. The presented articles were categorized into three major fields: new approaches to the degradation of water pollutants, new methods of isolation and determination of the emerging organic contaminants (EOCs), and the occurrence of EOCs in the water environment. These articles present only selected issues from a very wide area, which is the removal of organic pollution in water environment, but can serve as important references for future studies.

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

Current Analytical Chemistry ◽

10.2174/1573411015666190328185337 ◽

2019 ◽

Vol 15 (7) ◽

pp. 788-800 ◽

Cited By ~ 4

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.

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Analytical procedures for the determination of emerging organic contaminants in plant material: A review

Analytica Chimica Acta ◽

10.1016/j.aca.2012.02.004 ◽

2012 ◽

Vol 722 ◽

pp. 8-20 ◽

Cited By ~ 37

Author(s):

Víctor Matamoros ◽

Diana Calderón-Preciado ◽

Carmen Domínguez ◽

Josep M. Bayona

Keyword(s):

Organic Contaminants ◽

Plant Material ◽

Emerging Organic Contaminants ◽

Analytical Procedures

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Analytical methods for the determination of emerging organic contaminants in the atmosphere

Analytica Chimica Acta ◽

10.1016/j.aca.2008.01.055 ◽

2008 ◽

Vol 610 (2) ◽

pp. 156-178 ◽

Cited By ~ 41

Author(s):

Zhiyong Xie ◽

Ralf Ebinghaus

Keyword(s):

Organic Contaminants ◽

Analytical Methods ◽

Emerging Organic Contaminants

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Passive sampling as a tool for determination of micro-organic compounds in groundwater resources

10.5194/egusphere-egu2020-22436 ◽

2020 ◽

Author(s):

Nina Mali ◽

Anja Koroša ◽

Primož Auersperger

Keyword(s):

Organic Compounds ◽

Organic Pollutants ◽

Organic Contaminants ◽

Passive Sampling ◽

Groundwater Resources ◽

Sampling Technique ◽

Sampling Period ◽

Gas Chromatography Mass Spectrometry ◽

Grab Sampling

<p>Micro-organic (MO) compounds have been recognized as an important factor in environmental pollution. Developments in a range of analytical techniques are expanding the number of MOs that can be detected in groundwater. They may not be new contaminants, but recently detected using improved sampling and analytical methods. Monitoring programmes for groundwater are largely based on the collection of grab (spot) samples. One of the methods to determine the presence of organic compounds in groundwater v can also be passive sampling. Contrary to grab sampling, passive sampling is less sensitive to accidental extreme variations of the organic compounds concentrations in groundwater and it also allows determination of a large range of contaminants at once. A passive sampler can cover a long sampling period, integrating the pollutant concentration over time. This paper presents the application of the passive sampling technique for monitoring organic pollutants within the four major alluvial aquifers in Slovenia used for water supply. Passive samples were analyzed by gas chromatography mass spectrometry (GC-MS). For the interpretation of chromatograms, the AMDIS deconvolution was used. The deconvolution was covered by the GC-MS library with retention times for 921 organic contaminants from Agilent USA, as well as by the NIST 2008 library of mass spectra. Most frequently detected MO substances were classified in different pollutant groups with respect to their origin (urban source, agriculture or industry). Based on the results, a comparison of the presence of MOs in the present aquifers was made. Passive sampling with active carbon fibres was proved to be an appropriate method for monitoring micro-organic pollutants in groundwater.</p>

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Long-range proton–carbon coupling constants for the determination of the stereochemical structure of organic compounds.

Journal of The Faculty of Science and Technology ◽

10.52981/jfst.vi7.965 ◽

2021 ◽

pp. 125-131

Author(s):

Anwar, E. M. Noreljaleel

Keyword(s):

Nmr Spectroscopy ◽

Organic Compounds ◽

Long Range ◽

Coupling Constants ◽

Spin Coupling ◽

Spectroscopy Method ◽

Stereochemical Structure ◽

New Methods ◽

Spin Coupling Constants

A new methods for elucidating stereochemistry of organic compounds was developed on the basis of long-range proton–carbon coupling constants (2,3JC,H) and interpreting spin-coupling constants (3JH,H). Reaction of compound containing pyrin ring with nucleophile reagent was done to open the ring. HSQC-TOCSY experiments one of the new NMR spectroscopy method used to measure this values of spin-coupling constants and elucidating the stereochemistry of the product.

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The Spatial Distribution of the Microbial Community in a Contaminated Aquitard below an Industrial Zone

Water ◽

10.3390/w11102128 ◽

2019 ◽

Vol 11 (10) ◽

pp. 2128 ◽

Cited By ~ 3

Author(s):

Noa Balaban ◽

Irina Yankelzon ◽

Eilon Adar ◽

Faina Gelman ◽

Zeev Ronen ◽

...

Keyword(s):

Microbial Community ◽

Organic Compounds ◽

Polluted Water ◽

Production Plant ◽

Industrial Complex ◽

Groundwater Environment ◽

Plant Area ◽

Volatile Halogenated Organic Compounds ◽

Hazardous Organic Compounds ◽

Nmds Analysis

The industrial complex Neot Hovav, in Israel, is situated above an anaerobic fractured chalk aquitard, which is polluted by a wide variety of hazardous organic compounds. These include volatile and non-volatile, halogenated, organic compounds. In this study, we characterized the indigenous bacterial population in 17 boreholes of the groundwater environment, while observing the spatial variations in the population and structure as a function of distance from the polluting source. In addition, the de-halogenating potential of the microbial groundwater population was tested through a series of lab microcosm experiments, thus exemplifying the potential and limitations for bioremediation of the site. In all samples, the dominant phylum was Proteobacteria. In the production plant area, the non-obligatory organo-halide respiring bacteria (OHRB) Firmicutes Phylum was also detected in the polluted water, in abundancies of up to 16 %. Non-metric multidimensional scaling (NMDS) analysis of the microbial community structure in the groundwater exhibited clusters of distinct populations following the location in the industrial complex and distance from the polluting source. Dehalogenation of halogenated ethylene was demonstrated in contrast to the persistence of brominated alcohols. Persistence is likely due to the chemical characteristics of brominated alcohols, and not because of the absence of active de-halogenating bacteria.

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