Characterization of an ion-selective polypyrrole coating and application to the joint determination of potassium, sodium and ammonium by electrochemical impedance spectroscopy and partial least squares method

2007 ◽  
Vol 597 (2) ◽  
pp. 231-237 ◽  
Author(s):  
Montserrat Cortina-Puig ◽  
Xavier Muñoz-Berbel ◽  
Manuel del Valle ◽  
Francisco J. Muñoz ◽  
M. Asunción Alonso-Lomillo
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Least Squares ◽  
Partial Least Squares ◽  
Least Squares Method ◽  
Electrochemical Impedance ◽  
Joint Determination ◽  
Partial Least Squares Method

scholarly journals Quantitative Determination of the Multicomponents With Overlapping Ultraviolet Spectra Using Wavelet-Packed Transform and Partial Least Squares

2006 ◽  
Vol 2006 ◽  
pp. 1-6
Author(s):  
Ling Gao ◽  
Shouxin Ren
Keyword(s):  
Least Squares ◽  
Partial Least Squares ◽  
Least Squares Method ◽  
Wavelet Packet ◽  
Noise Removal ◽  
Time Frequency ◽  
Relative Standard ◽  
Best Basis Algorithm ◽  
Partial Least Squares Method

This paper presented a novel method named wavelet packet transform-based partial least squares method (WPTPLS) for simultaneous spectrophotometric determination ofα-naphthylamine, p-nitroaniline, and benzidine. Wavelet packet representations of signals provided a local time-frequency description and separation ability between information and noise. The quality of the noise removal can be improved by using best-basis algorithm and thresholding operation. Partial least squares (PLS) method uses both the response and concentration information to enhance its ability of prediction. In this case, by optimization, wavelet function and decomposition level for WPTPLS method were selected as Db16 and 3, respectively. The relative standard errors of prediction (RSEP) for all components with WPTPLS and PLS were 2.23% and 2.71%, respectively. Experimental results showed WPTPLS method to be successful and better than PLS.

Simultaneous determination of sucrose and trehalose in olive leaves by spectrophotometry utilizing partial least squares method

2009 ◽  
Vol 31 (4) ◽  
pp. 865-869 ◽  
Author(s):  
Mohammadreza Khanmohammadi ◽  
Maryam Moeini ◽  
Amir Bagheri Garamarudi ◽  
Abbas Sotudehnia ◽  
Mahdi Zarrabi
Keyword(s):  
Least Squares ◽  
Simultaneous Determination ◽  
Partial Least Squares ◽  
Least Squares Method ◽  
Olive Leaves ◽  
Partial Least Squares Method
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