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Development of time domain NMR spectrometers and methods for chemical analyses in field


In the last 15 years, the Embrapa Instrumentation NMR group has been developing time domain NMR (TD-NMR) instrumentation and methods for physical and chemical analyses of food, fuels, polymers and monitoring of electrochemical polymerization and transesterification reactions, among many other laboratory applications.Therefore, this project aims to develop a portable TD-NMR spectrometer for field analysis. For this, we intend to acquire a portable NMR console, which includes all the electronics and comes in an aluminum case and weighs about 22 kg. The permanent magnet and the NMR probe, called NMR sensor, will be developed in the project to have up to 3 Kg. After laboratory validation, the instrument will be evaluated for field analysis, to measure water / fat in animals and plants, foods such as fresh fruits, nuts and industrialized foods. (AU)

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Scientific publications (12)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE AGUIAR, LETICIA MAGALHAES; BONA, EVANDRO; COLNAGO, LUIZ ALBERTO; ROHWEDDER, JARBAS J. RODRIGUES; KILLNER, MARIO HENRIQUE M. Application of low-field and medium-resolution H-1 NMR spectroscopy combined with chemometric methods for automotive gasoline quality control. FUEL, v. 282, DEC 15 2020. Web of Science Citations: 0.
CRIZOSTOMO KOCK, FLAVIO VINICIUS; HIGUERA-PADILLA, ANGEL RUBEN; SANTOS VIGATTO, MAIARA DA SILVA; MARTIN NETO, LADISLAU; COLNAGO, LUIZ ALBERTO. Magnetic resonance studies of copper (II) sorbitol complex, in solution, reveal a supramolecular structure compatible to the crystal structure. Magnetic Resonance in Chemistry, v. 57, n. 7, p. 404-411, JUL 2019. Web of Science Citations: 0.
MORAES, TIAGO BUENO; MONARETTO, TATIANA; COLNAGO, LUIZ ALBERTO. Applications of Continuous Wave Free Precession Sequences in Low-Field, Time-Domain NMR. APPLIED SCIENCES-BASEL, v. 9, n. 7 APR 1 2019. Web of Science Citations: 0.
CAROSIO, MARIA G. A.; BERNARDES, DIEGO F.; CARVALHO, ANDRE DE S.; COLNAGO, LUIZ A. Non-invasive Measurements of Oilseed Temperature in Soil and Soil Thermal Diffusivity Using Time-Domain NMR Relaxometry. APPLIED MAGNETIC RESONANCE, v. 49, n. 10, p. 1119-1127, OCT 2018. Web of Science Citations: 0.
SANTOS, POLIANA M.; COLNAGO, LUIZ ALBERTO. Comparison Among MIR, NIR, and LF-NMR Techniques for Quality Control of Jam Using Chemometrics. FOOD ANALYTICAL METHODS, v. 11, n. 7, SI, p. 2029-2034, JUL 2018. Web of Science Citations: 2.
KILLNER, MARIO HENRIQUE M.; TOSIN, GIANCARLO; CARVALHO, ANDRE S.; BERNARDES, DIEGO FIRME; COLNAGO, LUIZ ALBERTO. Increasing the detection distance of remote NMR using wireless inductive coupling coil. SCIENTIFIC REPORTS, v. 7, OCT 4 2017. Web of Science Citations: 3.
LOBO, CARLOS M. S.; TOSIN, GIANCARLO; BAADER, JOHANN E.; COLNAGO, LUIZ A. Complementary analyses of hollow cylindrical unioriented permanent magnet (HCM) with high permeability external layer. JOURNAL OF MAGNETIC RESONANCE, v. 283, p. 79-88, OCT 2017. Web of Science Citations: 0.
CRIZOSTOMO KOCK, FLAVIO VINICIUS; MONARETTO, TATIANA; COLNAGO, LUIZ ALBERTO. Time-domain NMR relaxometry as an alternative method for analysis of chitosan-paramagnetic ion interactions in solution. International Journal of Biological Macromolecules, v. 98, p. 228-232, MAY 2017. Web of Science Citations: 2.
POLIANA M. SANTOS; FLÁVIO VINICIUS C. KOCK; MAIARA S. SANTOS; CARLOS MANUEL S. LOBO; ANDRÉ S. CARVALHO; LUIZ ALBERTO COLNAGO. Non-Invasive Detection of Adulterated Olive Oil in Full Bottles Using Time-Domain NMR Relaxometry. Journal of the Brazilian Chemical Society, v. 28, n. 2, p. 385-390, Fev. 2017. Web of Science Citations: 6.
CRIZOSTOMO KOCK, FLAVIO VINICIUS; COLNAGO, LUIZ ALBERTO. Rapid method for monitoring chitosan coagulation using low-field NMR relaxometry. Carbohydrate Polymers, v. 150, p. 1-4, OCT 5 2016. Web of Science Citations: 5.
FLORES, D. W. M.; COLNAGO, L. A.; FERREIRA, M. D.; SPOTO, M. H. F. Prediction of Orange juice sensorial attributes from intact fruits by TD-NMR. Microchemical Journal, v. 128, p. 113-117, SEP 2016. Web of Science Citations: 4.
MORAES, TIAGO BUENO; MONARETTO, TATIANA; COLNAGO, LUIZ ALBERTO. Rapid and simple determination of T-1 relaxation times in time-domain NMR by Continuous Wave Free Precession sequence. JOURNAL OF MAGNETIC RESONANCE, v. 270, p. 1-6, SEP 2016. Web of Science Citations: 7.

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