Comprehensive multiphase NMR spectroscopy: Basic experimental approaches to differentiate phases in heterogeneous samples

Courtier‐Murias, Denis; Farooq, Hashim; Masoom, Hussain; Botana, Adolfo; Soong, Ronald; Longstaffe, James G.; Simpson, Myrna J.; Maas, Werner E.; Fey, Michael; Andrew, Brian; Struppe, Jochem; Hutchins, Howard; Krishnamurthy, S.; Kumar, Rajeev; Monette, Martine; Stronks, Henry J.; Hume, Alan; Simpson, André J.

doi:10.1016/j.jmr.2012.02.009

Cited by 96 publications

(157 citation statements)

References 80 publications

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“…In several aspects, wastewater and sludge can affect the receiving environment after disposal [12,30] ; therefore, compositional information is extremely important for evaluating impact and even protective actions. The capability of NMR to provide molecular information in environmental samples in multiple phases (solid, liquid and gel or semi-solid) [25,105] and the non-destructive feature as well as the fact that the samples require little or no pretreatment [52,105,106] sets NMR apart from other analytical techniques and makes it highly appropriate for environmental analysis.…”

Section: Hyphenated Lc-nmr Applied To Inputs and Outputs Of Wwtpsmentioning

confidence: 99%

“…Since then, technological advances, including cryomagnets, cryoprobes, new coil designs and complex and effective pulse sequences, have allowed NMR to advance knowledge to new frontiers. For example, high-resolution magic angle spinning (HR-MAS) [21][22][23][24] and, more recently, comprehensive multiphase probes (CMPs) [25] permitted the use of a single hybrid NMR probe to obtain solution-state, gel-state (HR-MAS) and solidstate experiments that are available today. [26,27] This technology allowed for the study of both structures and interactions as well as between phases in the native state to fully understand unaltered complex systems.…”

Section: Introductionmentioning

confidence: 99%

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Advancements in waste water characterization through NMR spectroscopy: review

Filho

Silva

Ferreira

2014

Magnetic Reson in Chemistry

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There are numerous organic pollutants that lead to several types of ecosystem damage and threaten human health. Wastewater treatment plants are responsible for the removal of natural and anthropogenic pollutants from the sewage, and because of this function, they play an important role in the protection of human health and the environment. Nuclear magnetic resonance (NMR) has proven to be a valuable analytical tool as a result of its versatility in characterizing both overall chemical composition as well as individual species in a wide range of mixtures. In addition, NMR can provide physical information (rigidity, dynamics, etc.) as well as permit in depth quantification. Hyphenation with other techniques such as liquid chromatography, solid phase extraction and mass spectrometry creates unprecedented capabilities for the identification of novel and unknown chemical species. Thus, NMR is widely used in the study of different components of wastewater, such as complex organic matter (fulvic and humic acids), sludge and wastewater. This review article summarizes the NMR spectroscopy methods applied in studies of organic pollutants from wastewater to provide an exhaustive review of the literature as well as a guide for readers interested in this topic.

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Section: Hyphenated Lc-nmr Applied To Inputs and Outputs Of Wwtpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advancements in waste water characterization through NMR spectroscopy: review

Filho

Silva

Ferreira

2014

Magnetic Reson in Chemistry

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“…1), which may not only further improve spectral resolution, but also select coherence pathways and permit diffusion experiments to differentiate molecular species according to their degree of mobility in hydrated matrices. Moreover, edited (namely "filtered") pulse sequences, such as T 2 -and diffusion-based sequences, can be used in HRMAS systems [10][11][12]. This allows HRMAS spectroscopy to provide information on both polar and non-polar components of biological tissues or agrofood products without preliminary separations though extractions.…”

Section: Introductionmentioning

confidence: 99%

HRMAS NMR spectroscopy applications in agriculture

Mazzei¹,

Piccolo²

2017

Chem. Biol. Technol. Agric.

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The relatively recent and advanced high-resolution magic angle spinning (HRMAS) NMR technique enables the direct application of NMR spectroscopy to semi-solid and gel-like samples. It combines the advantages of both solid-and liquid-state NMR by allowing to concomitantly measure intact and non-manipulated samples. Based on both 1D and 2D homo-and heteronuclear NMR spectra, HRMAS evaluates the composition of fresh semi-solid samples with a similar resolution as that of classical liquid-state NMR techniques. The enhanced spectral quality still obtained for semi-solid samples is mainly due to the MAS system, whose rapid spinning and sample orientation minimize the anisotropic processes that prevent the acquisition of meaningful NMR spectra for non-liquid materials. Moreover, HRMAS allows us to use edited pulse sequences which, especially in the case of biological tissues or agrofood products, may provide a simultaneous information on polar and non-polar components without the need of preliminary sample extraction. Additionally, this technique may differentiate molecular species according to their degree of mobility in hydrated matrices. The evident versatile potential of the HRMAS NMR makes this technique particularly useful for life science molecular studies. Despite the focus of HRMAS has been greatly devoted on clinical biomedicine, materials chemistry, and metabolomics, there are already enough studies that show useful applications on agricultural issues. This report reviews the latest representative studies that employ HRMAS NMR on systems related to agricultural chemistry, requiring the characterization and dynamics of soil components, plant tissues, agrofood products, and in vivo organisms.

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“…Over the years, numerous detailed NMR studies have provided valuable information on the underlying factors regarding the different binding properties of a number of anthropogenic contaminants [31][32][33][34][35]. Recently, a novel NMR technology was introduced, termed as comprehensive multiphase (CMP) NMR [38]. This approach combines hardware from solution, gel, and solid-state NMR into a single probe and permits environmental samples to be investigated in situ, in their fully hydrated state, and in all phases, allowing for all phases to be simultaneously investigated [28,[35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a novel NMR technology was introduced, termed as comprehensive multiphase (CMP) NMR [38]. This approach combines hardware from solution, gel, and solid-state NMR into a single probe and permits environmental samples to be investigated in situ, in their fully hydrated state, and in all phases, allowing for all phases to be simultaneously investigated [28,[35][36][37][38]. A number of NMR techniques can be used to investigate interactions between organic soil constituents [31,36,39].…”

Section: Introductionmentioning

confidence: 99%

Water-mediated NOE: a promising tool for interrogating interfacial clay–xenobiotic interactions

Soong

Botana

Wang

et al. 2017

Chem. Biol. Technol. Agric.

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Background:The sorption of anthropogenic compounds on clay minerals is a complex molecular process with important implications for the fate of agrochemicals and organic pollutants in the environment. Results:The present study illustrates the use of a water-mediated NOE approach to study clay binding interactions. This method exploits the interfacial water layer on clay surfaces as a hydrogen reservoir for magnetization transfer. The interactions of four different xenobiotics with clay suspension were investigated through this method to demonstrate its capability to screen for the clay-xenobiotic molecular affinity. Further, based onthe NOE build-up rates, epitope map of clay-xenobiotic interactions can be generated, explaining theorientation and mechanism of the interactions. Conclusions:The water-mediated NOE approach has the potential to reveal key insights into the role that interfacial water plays in the binding process, providing a better understanding of the partitioning of anthropogenic compounds from bulk water into aqueous clay suspensions.

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Comprehensive multiphase NMR spectroscopy: Basic experimental approaches to differentiate phases in heterogeneous samples

Cited by 96 publications

References 80 publications

Advancements in waste water characterization through NMR spectroscopy: review

Advancements in waste water characterization through NMR spectroscopy: review

HRMAS NMR spectroscopy applications in agriculture

Water-mediated NOE: a promising tool for interrogating interfacial clay–xenobiotic interactions

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