Matches in SemOpenAlex for { <https://semopenalex.org/work/W2952667899> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W2952667899 abstract "Solid-state NMR is widely used to characterize organic matter (OM), including litter inputs, peat, composts, and mineral soil, and to understand the fate of environmental contaminants. The combination of high-power decoupling, magic-angle spinning (MAS), and cross polarization (CP) to enhance sensitivity has greatly facilitated applications to 13C, with lesser use of 15N and 31P. Focusing on 13C, this article summarizes the development of the field and presents basic concepts of solid-state NMR, pulse sequences commonly used [direct polarization (DP), CP, dipolar dephasing (DD), and total sideband suppression (TOSS)], sample preparation and hydrofluoric acid pretreatment, general approaches to spectral acquisition and FID processing, removal of background signal, and data analysis including correction for spinning side bands (SSBs) and interpretation through a molecular mixing model of representative biopolymers. As CP NMR is inherently nonquantitative, and nuclei may be undectectable even with DP, techniques to improve quantitative reliability are discussed. More complex experiments can reveal spatially heterogeneous domains by generating subspectra of 13C associated with protons with different relaxation times, and more recent developments allow spectral editing and two-dimensional (2-D) applications such as heteronuclear correlation (HETCOR). Applications of solid-state 15N NMR are much more challenging, because of its low sensitivity and low natural abundance. Similarly, despite 100% natural abundance and high sensitivity, solid-state 31P NMR is also limited by the small chemical shift range of phosphate minerals, and peak broadening and large higher order sidebands because of their close association with paramagnetics and large chemical shift anisotropy (CSA). However, studies with these nuclei can still provide much insight into OM cycling and the fate of fertilizers and contaminants in the environment.Keywords:organic matter;solid-state NMR ;CPMAS ;15N NMR ;13C NMR ;31P NMR" @default.
- W2952667899 created "2019-06-27" @default.
- W2952667899 creator A5064529563 @default.
- W2952667899 date "2016-05-01" @default.
- W2952667899 modified "2023-09-27" @default.
- W2952667899 title "ChemInform Abstract: Environmental NMR: Solid-State Methods" @default.
- W2952667899 doi "https://doi.org/10.1002/chin.201621280" @default.
- W2952667899 hasPublicationYear "2016" @default.
- W2952667899 type Work @default.
- W2952667899 sameAs 2952667899 @default.
- W2952667899 citedByCount "0" @default.
- W2952667899 crossrefType "journal-article" @default.
- W2952667899 hasAuthorship W2952667899A5064529563 @default.
- W2952667899 hasConcept C107872376 @default.
- W2952667899 hasConcept C113196181 @default.
- W2952667899 hasConcept C121332964 @default.
- W2952667899 hasConcept C153202636 @default.
- W2952667899 hasConcept C178790620 @default.
- W2952667899 hasConcept C185592680 @default.
- W2952667899 hasConcept C2776499502 @default.
- W2952667899 hasConcept C44838205 @default.
- W2952667899 hasConcept C46141821 @default.
- W2952667899 hasConcept C49023278 @default.
- W2952667899 hasConcept C62520636 @default.
- W2952667899 hasConcept C66974803 @default.
- W2952667899 hasConcept C84935128 @default.
- W2952667899 hasConcept C92381491 @default.
- W2952667899 hasConceptScore W2952667899C107872376 @default.
- W2952667899 hasConceptScore W2952667899C113196181 @default.
- W2952667899 hasConceptScore W2952667899C121332964 @default.
- W2952667899 hasConceptScore W2952667899C153202636 @default.
- W2952667899 hasConceptScore W2952667899C178790620 @default.
- W2952667899 hasConceptScore W2952667899C185592680 @default.
- W2952667899 hasConceptScore W2952667899C2776499502 @default.
- W2952667899 hasConceptScore W2952667899C44838205 @default.
- W2952667899 hasConceptScore W2952667899C46141821 @default.
- W2952667899 hasConceptScore W2952667899C49023278 @default.
- W2952667899 hasConceptScore W2952667899C62520636 @default.
- W2952667899 hasConceptScore W2952667899C66974803 @default.
- W2952667899 hasConceptScore W2952667899C84935128 @default.
- W2952667899 hasConceptScore W2952667899C92381491 @default.
- W2952667899 hasLocation W29526678991 @default.
- W2952667899 hasOpenAccess W2952667899 @default.
- W2952667899 hasPrimaryLocation W29526678991 @default.
- W2952667899 hasRelatedWork W1027850691 @default.
- W2952667899 hasRelatedWork W1035311366 @default.
- W2952667899 hasRelatedWork W1532091286 @default.
- W2952667899 hasRelatedWork W156093289 @default.
- W2952667899 hasRelatedWork W1985811059 @default.
- W2952667899 hasRelatedWork W1996769741 @default.
- W2952667899 hasRelatedWork W2016525517 @default.
- W2952667899 hasRelatedWork W2043297133 @default.
- W2952667899 hasRelatedWork W207739447 @default.
- W2952667899 hasRelatedWork W2078269787 @default.
- W2952667899 hasRelatedWork W2092781585 @default.
- W2952667899 hasRelatedWork W2111363780 @default.
- W2952667899 hasRelatedWork W2422863581 @default.
- W2952667899 hasRelatedWork W2806483514 @default.
- W2952667899 hasRelatedWork W2949293631 @default.
- W2952667899 hasRelatedWork W2950335716 @default.
- W2952667899 hasRelatedWork W2952815452 @default.
- W2952667899 hasRelatedWork W2953148499 @default.
- W2952667899 hasRelatedWork W67921481 @default.
- W2952667899 hasRelatedWork W73355912 @default.
- W2952667899 isParatext "false" @default.
- W2952667899 isRetracted "false" @default.
- W2952667899 magId "2952667899" @default.
- W2952667899 workType "article" @default.