Buscar
Mostrando ítems 1-10 de 412
A novel second-order standard addition analytical method based on data processing with multidimensional partial least-squares and residual bilinearization
(Elsevier Science, 2009-10)
In the presence of analyte-background interactions and a significant background signal, both second-order multivariate calibration and standard addition are required for successful analyte quantitation achieving the ...
Development of a second-order standard addition fluorescence method for the direct determination of riboflavin in human urine samples without previous clean up and separation steps
(Elsevier Science, 2017-07)
A new strategy for the determination of riboflavin (RF, or vitamin B2) in human urine samples has been developed, combining excitation-emission fluorescence matrix (EEFM) data in standard addition mode and second-order ...
Determination of propranolol enantiomers in plasma and urine by spectrofluorimetry and second-order standard addition method
(Elsevier Science BvAmsterdamHolanda, 2009)
Chemometric modeling of kinetic-fluorescent third-order data for thiamine determination in multivitamin complexes
(Elsevier Science, 2016-03)
Thiamine (vitamin B1) was converted into a fluorescent thiochrome by oxidation catalyzed by Hg2+ in alkaline medium. The kinetic evolution for this conversion was followed by emission-excitation spectroscopy generating a ...
Direct determination of trans-resveratrol in human plasma by spectrofluorimetry and second-order standard addition
(Elsevier Science BvAmsterdamHolanda, 2010)
Combining standard addition method and second-order advantage for direct determination of salicylate in undiluted human plasma by spectrofluorimetry
(Elsevier Science BvAmsterdamHolanda, 2006)
Determination of ochratoxin A in coffee and tea samples by coupling second-order multivariate calibration and fluorescence spectroscopy
(Elsevier Science, 2020-11-01)
A new method to quantify the mycotoxin ochratoxin A (OTA) in coffee and tea samples is proposed based on second-order multivariate calibration and excitation-emission fluorescence matrix (EEFM) data. Experimental conditions ...
Chemometric tools improving the determination of anti-inflammatory and antiepileptic drugs in river and wastewater by solid-phase microextraction and liquid chromatography diode array detection
(Elsevier Science, 2009-07)
An analytical method for the simultaneous determination of seven non-steroidal anti-inflammatory drugs (naproxen, ketoprofen, diclofenac, piroxicam, indomethacin, sulindac and diflunisal) and the anticonvulsant carbamazepine ...