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Sorensen M.K.,University of Aarhus | Vinding M.S.,University of Aarhus | Bakharev O.N.,University of Aarhus | Nesgaard T.,NanoNord | And 2 more authors.
Analytical Chemistry | Year: 2014

A mobile, low-field nuclear magnetic resonance (NMR) sensor for onboard, inline detection of catalytic fines in fuel oil in the shipping industry is presented as an alternative to onshore laboratory measurements. Catalytic fines (called cat fines) are aluminosilicate zeolite catalysts utilized in the oil cracking process at refineries. When present in fuel oil, cat fines cause abrasive wear of engine parts and may ultimately lead to engine breakdown with large economical consequences, thereby motivating methods for inline measurements. Here, we report on a robust, mobile, and low-cost 27Al NMR sensor for continuous online measurement of the level of catalytic fines in fuel oil onboard ships. The sensor enables accurate measurements of aluminum (catalytic fines) in ppm concentrations in good agreement with commercial laboratory reference measurements. © 2014 American Chemical Society.


Sorensen M.K.,University of Aarhus | Jensen O.,NanoNord | Bakharev O.N.,University of Aarhus | Nyord T.,University of Aarhus | Nielsen N.Chr.,University of Aarhus
Analytical Chemistry | Year: 2015

Knowledge of the actual content of nitrogen, phosphorus, and potassium (NPK) in animal slurry is highly important to optimize crop production and avoid environmental pollution when slurry is spread on agricultural fields. Here, we present a mobile, low-field nuclear magnetic resonance (NMR) sensor suitable for online monitoring of the NPK content in animal slurry as an alternative to crude estimates or tedious nonspecific, off-site laboratory analysis. The sensor is based on 14N, 17O, 31P, and 39K NMR in a digital NMR instrument equipped with a 1.5 T Halbach magnet for direct detection of ammonium N, total P, and K and indirect evaluation of the organic N content, covering all practical components of NPK in animal slurry. In correlation studies, the obtained NMR measurements show good agreement with reference measurements from commercial laboratories. (Graph Presented). © 2015 American Chemical Society.


PubMed | University of Aarhus and NanoNord
Type: Journal Article | Journal: Analytical chemistry | Year: 2015

Knowledge of the actual content of nitrogen, phosphorus, and potassium (NPK) in animal slurry is highly important to optimize crop production and avoid environmental pollution when slurry is spread on agricultural fields. Here, we present a mobile, low-field nuclear magnetic resonance (NMR) sensor suitable for online monitoring of the NPK content in animal slurry as an alternative to crude estimates or tedious nonspecific, off-site laboratory analysis. The sensor is based on (14)N, (17)O, (31)P, and (39)K NMR in a digital NMR instrument equipped with a 1.5 T Halbach magnet for direct detection of ammonium N, total P, and K and indirect evaluation of the organic N content, covering all practical components of NPK in animal slurry. In correlation studies, the obtained NMR measurements show good agreement with reference measurements from commercial laboratories.


Trademark
NanoNord | Date: 2014-03-11

Antenna parameter measuring apparatus; fluid flow measuring apparatus; fluid level measuring apparatus for use in motor vehicles; instruments for measuring levels of fluids; measuring apparatus for measuring levels of chemical components; electric measuring devices for measuring levels of chemical components; measuring instruments for measuring levels of chemical components; measuring sensors for measuring levels of chemical components; measuring stands specifically adapted for use with measuring instruments; measuring apparatus and instruments, namely, oil monitors for monitoring quality of fuel oil and lubrication oil in the shipping industry; electric monitoring apparatus, namely, oil monitors; electric monitoring control apparatus, namely, oil monitors; electric safety monitoring apparatus, namely, oil monitors for monitoring quality of fuel oil and lubrication oil in the shipping industry. Calibration, namely, measuring; measuring of variations of fluids associated with the drilling of boreholes; rental of measuring apparatus; consumer product safety testing services for determining the wear rate of lubricating components; condition monitoring relating to lubricants for the purposes of quality testing; condition monitoring relating to fluids, namely, particles found in oil; condition monitoring relating to oils for the purposes of quality testing.


The invention relates to a method for determination of a quality parameter of a hydrocarbon gas mixture, such as LNG, CNG or SNG, the method comprising subjecting at least a part of the hydrocarbon gas mixture to an NMR reading comprising generating a ^(1)H data comprising a ^(1)H NMR spectra and correlating the ^(1)H NMR data to calibration data, wherein the calibration data relates the ^(1)H NMR data to at least one quality parameter of the hydrocarbon gas. The invention also relates to a system suitable for determination of a quality parameter of a hydrocarbon gas mixture according to the method.


The invention relates to a method of and a system for quantitative determination of sodium in petroleum fuel, such as heave fuel oil. The method comprises determining a concentration of sodium in the petroleum fuel using NMR. The method advantageously comprises determining sodium in the form of sodium isotope ^(23)Na by performing at least one NMR measurement on at least a part of the petroleum fuel, obtaining at least one NMR spectrum from the NMR measurement(s) and performing the quantitative determination of sodium based on the NMR spectrum, where the result is compared to calibration data comprising NMRdeterminations on petroleum fuels with known sodium concentration.


The invention concerns a method for quantitative determination of nitrogen present in the form of one or more nitrogen containing compounds and/or ions thereof in an aqueous fluid, the method includes subjecting at least a part of the aqueous fluid to an NMR reading including generating a ^(14)N data having a ^(14)N NMR data spectra and correlating the ^(14)N NMR data to calibration data. A system suitable for carrying out the method as well as a moveable manure spreader including a system is also described.


The invention concerns a system for and a method of determining a least one quality parameter in an aqueous fluid. The method including subjecting at least a sample of the aqueous fluid to a cross-flow filtration in a cross-flow filter, separating the aqueous fluid into a permeate fraction and a retentate fraction, performing NMR reading on the retentate fraction using an NMR spectroscope, collecting NMR data from said NMR reading and correlating the collected NMR data to calibration data to determine said at least one quality parameter of the aqueous fluid.


Patent
NanoNord | Date: 2012-12-07

The invention concerns a method of performing a quantitative and/or qualitative determination of catalytic fines in fuel oil and a system suitable for determining catalytic fines in an oil using the method. The method comprises determining aluminum using NMR and quantitatively and/or qualitatively determining the catalytic fines based on the aluminum determination. The system comprises a NMR spectrometer, a digital memory storing a calibration map comprising calibrating data for calibrating NMR spectra obtained by the NMR spectrometer and a computer programmed to analyze the NMR spectra obtained by the NMR spectrometer using calibration map and performing at least one quantitative and/or qualitative catalytic fines determination.


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