Buscar
Mostrando ítems 1-10 de 1373
RAMAN AND INFRARED-SPECTRA OF SILICA-GEL AND NIOBIUM(V) OXIDE GRAFTED ON SILICA-GEL SURFACE AND THEIR DEPENDENCE ON PRETREATMENT TEMPERATURES
(Elsevier Science BvAmsterdamHolanda, 1994)
A new and ecological method to quantify vancomycin in pharmaceutical product by infrared spectrometry
(2021-01-01)
Vancomycin, an antimicrobial, does not present quantitative method by infrared spectrometry in the literature for the evaluation of a pharmaceutical product. This technique is considered a clean alternative because in the ...
Experimental NMR and MS study of benzoylguanidines. Investigation of E/Z isomerism
(2013-04-01)
Molecules containing the guanidinic nuclei possess several pharmacological applications, and knowing the preferred isomers of a potential drug is important to understand the way it operates pharmacologically. Benzoylguanidines ...
Photo-induced generation of the riboflavin-tryptophan adduct and a vibrational interpretation of its structure
(1994)
A pure fraction of a riboflavin-tryptophan adduct was obtained for the first time from a mixture of products resulting from the anaerobic photoirradiation of riboflavin and tryptophan in solution. The procedure used to ...
Vibrational study of hydrotris(pyrazolyl)borato complexes of rhenium(I) tricarbonyl
(Elsevier, 1995)
The Fourier transform infrared and Raman spectra of the complexes hydrotris(pyrazolyl)borato rhenium tricarbonyl [TpRe(CO)3] and hydrotris(3,5-dimethylpyrazolyl)borato rhenium tricarbonyl [Tp*Re(CO)3] and their ligand salts ...
Infrared assisted digestion used as a simple green sample preparation method for nutrient analysis of animal feed by microwave induced plasma atomic emission spectrometry
(Elsevier Science, 2021-08)
Based on green analytical chemistry principles it is important to evolve procedures that convert solid samples into solutions without using excessive reagent quantities, energy, temperature, and avoiding waste generation. ...
Multivariate calibration for quantitative analysis of eucalypt kraft pulp by NIR spectrometry
(Marcel Dekker IncNew YorkEUA, 2002)