A Test Field for the Second-Order Advantage in Bilinear Least-Squares and Parallel Factor Analyses:  Fluorescence Determination of Ciprofloxacin in Human Urine

2004 ◽  
Vol 76 (10) ◽  
pp. 2798-2806 ◽  
Author(s):  
Patricia C. Damiani ◽  
Alberto J. Nepote ◽  
Mariela Bearzotti ◽  
Alejandro C. Olivieri
Keyword(s):  
Least Squares ◽  
Human Urine ◽  
Second Order ◽  
Test Field ◽  
Factor Analyses ◽  
Fluorescence Determination ◽  
Parallel Factor

Second-Order Advantage Achieved with Four-Way Fluorescence Excitation−Emission−Kinetic Data Processed by Parallel Factor Analysis and Trilinear Least-Squares. Determination of Methotrexate and Leucovorin in Human Urine

2004 ◽  
Vol 76 (19) ◽  
pp. 5657-5666 ◽  
Author(s):  
Alejandro C. Olivieri ◽  
Juan A. Arancibia ◽  
Arsenio Muñoz de la Peña ◽  
Isabel Durán-Merás ◽  
Anunciación Espinosa Mansilla
Keyword(s):  
Factor Analysis ◽  
Least Squares ◽  
Human Urine ◽  
Kinetic Data ◽  
Parallel Factor Analysis ◽  
Second Order ◽  
Fluorescence Excitation ◽  
Parallel Factor

Usefulness of parallel factor analysis to handle the matrix effect in the fluorescence determination of tetracycline in whey milk

2009 ◽  
Vol 632 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Noelia Rodríguez ◽  
Blanca D. Real ◽  
M. Cruz Ortiz ◽  
Luis A. Sarabia ◽  
Ana Herrero
Keyword(s):  
Factor Analysis ◽  
Matrix Effect ◽  
Parallel Factor Analysis ◽  
Fluorescence Determination ◽  
The Matrix ◽  
Parallel Factor

Rapid X-Ray Fluorescence Determination of Phosphorus in Geologic Samples

1971 ◽  
Vol 25 (1) ◽  
pp. 41-43 ◽  
Author(s):  
Brent P. Fabbi
Keyword(s):  
Pulse Height ◽  
Second Order ◽  
Analytical Line ◽  
X Ray ◽  
First Order ◽  
Peak Overlap ◽  
Fluorescence Determination ◽  
Geologic Samples

Calcium and Kβ1 and Kβ5 both have second order (II) lines that interfere spectrally with the phosphorus Kα1 first order (I) analytical line in the x-ray fluorescence determination. By combining maximum pulse height discrimination with a mathematical correction for peak overlap, phosphorus can be accurately determined in a wide variety of geologic samples.

Second order advantage in the determination of amaranth, sunset yellow FCF and tartrazine by UV–vis and multivariate curve resolution-alternating least squares

2009 ◽  
Vol 655 (1-2) ◽  
pp. 38-42 ◽  
Author(s):  
Natalia Elizabeth Llamas ◽  
Mariano Garrido ◽  
María Susana Di Nezio ◽  
Beatriz Susana Fernández Band
Keyword(s):  
Least Squares ◽  
Second Order ◽  
Alternating Least Squares ◽  
Multivariate Curve Resolution ◽  
Sunset Yellow ◽  
Curve Resolution

Comparison of the predictive ability of several second-order multivariate methods in the simultaneous determination of two therapeutic drugs in human urine

Talanta ◽  
2012 ◽  
Vol 88 ◽  
pp. 609-616 ◽  
Author(s):  
M.C. Hurtado-Sánchez ◽  
I. Durán-Merás ◽  
M.I. Rodríguez-Cáceres ◽  
A. Jiménez-Girón ◽  
A.C. Olivieri
Keyword(s):  
Simultaneous Determination ◽  
Human Urine ◽  
Predictive Ability ◽  
Second Order ◽  
Multivariate Methods ◽  
Therapeutic Drugs
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