Related ArticlesFrom Spill to Sequestration: The Molecular Journey of Contamination via Comprehensive Multiphase NMR.
Environ Sci Technol. 2015 Nov 18;
Authors: Masoom H, Courtier-Murias D, Soong R, Maas WE, Fey M, Kumar R, Monette M, Stronks HJ, Simpson MJ, Simpson AJ
Abstract
Comprehensive Multiphase NMR is a novel NMR technique that permits all components (solutions, gels, and solids) to be studied in unaltered natural samples. In this study a wide range of CMP-NMR interaction and editing-based experiments are combined to follow contaminants (pentafluorophenol (PFP) and perfluorooctanoic acid (PFOA)) from the solution state (after a spill) through the gel-state and finally into the true solid-state (sequestered) in an intact water-swollen soil. Kinetics experiments monitoring each phase illustrate PFOA rapidly transfers from solution to the solid phase while for PFP the process is slower with longer residence times in the solution and gel phase. Interaction-based experiments reveal that PFOA enters the soil via its hydrophobic tails and selectively binds to soil microbial protein. PFP sorption shows less specificity exhibiting interactions with a range of gel and solid soil components with a preference towards aromatics (mainly lignin). The results indicate that in addition to more traditional measurements such as Koc, other factors including the influence of the contaminant on the soil-water interface, specific biological interactions, soil composition (content of lignin, protein, etc.) and physical accessibility/swellability of soil organic components will likely be central to better explaining and predicting the true behavior of contaminants in soil.
PMID: 26579583 [PubMed - as supplied by publisher]
[NMR paper] Application of comprehensive NMR-based analysis strategy in annotation, isolation and structure elucidation of low molecular weight metabolites of Ricinus communis seeds.
Application of comprehensive NMR-based analysis strategy in annotation, isolation and structure elucidation of low molecular weight metabolites of Ricinus communis seeds.
Related Articles Application of comprehensive NMR-based analysis strategy in annotation, isolation and structure elucidation of low molecular weight metabolites of Ricinus communis seeds.
Phytochem Anal. 2015 Oct 14;
Authors: Vu?kovi? I, Rapinoja ML, Vaismaa M, Vanninen P, Koskela H
Abstract
INTRODUCTION: Powder-like extract of Ricinus communis seeds contain a...
nmrlearner
Journal club
0
10-16-2015 01:44 PM
[Question from NMRWiki Q&A forum] Diamagnetic contamination
Diamagnetic contamination
How to determine diamagnetic contamination in PRE experiments.In what extent it will effect the Gamma2 values?
Check if somebody has answered this question on NMRWiki QA forum
nmrlearner
News from other NMR forums
0
12-14-2012 08:57 PM
[NMR900 blog] Postdoctoral Research Associate in multiphase NMR Spectroscopy
Postdoctoral Research Associate in multiphase NMR Spectroscopy
Environmental NMR Centre, Department of Chemistry, University of Toronto at Scarborough, Toronto, Ontario, Canada
Project Description:
This is a unique opportunity to develop a novel area of NMR spectroscopy termed Comprehensive Multiphase NMR spectroscopy (CMP NMR).
CMP NMR is a new area of NMR spectroscopy that incorporates solid-state, semi-solids (HR-MAS) and solution-state NMR (J. Magn. Reson. 2012; 217:61-76). The goal is to take samples such as tissues, plants, cells, soils etc. in their natural fully swollen...
nmrlearner
News from NMR blogs
0
07-07-2012 10:16 PM
[NMR paper] The hydration of amides in helices; a comprehensive picture from molecular dynamics,
The hydration of amides in helices; a comprehensive picture from molecular dynamics, IR, and NMR.
Related Articles The hydration of amides in helices; a comprehensive picture from molecular dynamics, IR, and NMR.
Protein Sci. 2003 Mar;12(3):520-31
Authors: Walsh ST, Cheng RP, Wright WW, Alonso DO, Daggett V, Vanderkooi JM, DeGrado WF
We examined the hydration of amides of alpha(3)D, a simple, designed three-helix bundle protein. Molecular dynamics calculations show that the amide carbonyls on the surface of the protein tilt away from the...
nmrlearner
Journal club
0
11-24-2010 09:01 PM
Comprehensive Solid-State NMR Characterization of Electronic Structure in Ditechnetiu
Comprehensive Solid-State NMR Characterization of Electronic Structure in Ditechnetium Heptoxide
Herman Cho et al
http://pubs.acs.org//appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja105687j/aop/images/medium/ja-2010-05687j_0002.gifJournal of the American Chemical Society, Volume 0, Issue 0, Articles ASAP (As Soon As Publishable).
Source: Journal of the American Chemical Society
From Spill to Sequestration: The Molecular Journey of Contamination via Comprehensive Multiphase NMR.
Linear Mode
