Simultaneous determination of cobalt and palladium in micellar media using H-point standard addition method and partial least square regression

2007 ◽  
Vol 67 (2) ◽  
pp. 378-384 ◽  
Author(s):  
G. Bagherian ◽  
M. Arab Chamjangali ◽  
H. Eskandari
Keyword(s):  
Simultaneous Determination ◽  
Standard Addition ◽  
Partial Least Square ◽  
Least Square ◽  
Partial Least Square Regression ◽  
Standard Addition Method ◽  
Micellar Media ◽  
Addition Method ◽  
Least Square Regression

scholarly journals Simultaneous Determination of Eosin-Yellow and Ponceau-SUsingH-Point Standard Addition Method in Micellar Media

2012 ◽  
Vol 9 (1) ◽  
pp. 224-232
Author(s):  
Amandeep Kaur ◽  
Usha Gupta
Keyword(s):  
Simultaneous Determination ◽  
Standard Addition ◽  
Nickel Chloride ◽  
Standard Addition Method ◽  
Micellar Media ◽  
Addition Method ◽  
Real Samples ◽  
Ponceau S ◽  
Eosin Yellow

H-point standard addition method (HPSAM) is developed for simultaneous determination of eosin-Yand ponceau-s in micellar media. Nickel chloride (NiCl2) is used as chromogenic reagent for complexes formation of eosin-Yand ponceau-Sfood colorants. The measurements were carried out using sodium lauryl sulphate as a surfactant, in buffered solution at pH 6.0. The concentration range of 0.115-2.53 μg/mL of eosin-Yand 0.159-3.80 μg/mL of ponceau-S. The proposed procedures have been applied successfully for the simultaneous determination of eosin-Yand ponceau-Sin synthetic binary mixtures and real samples.

scholarly journals H-Point Standard Addition Method for Simultaneous Determination of Eosin and Erytrosine

2011 ◽  
Vol 8 (4) ◽  
pp. 1979-1985 ◽  
Author(s):  
Amandeep Kaur ◽  
Usha Gupta
Keyword(s):  
Binary Mixture ◽  
Simultaneous Determination ◽  
Standard Addition ◽  
Standard Addition Method ◽  
Micellar Media ◽  
Addition Method ◽  
Commercial Products ◽  
Food Dyes ◽  
Triton X

A new, simple, sensitive and selectiveH-point standard addition method (HPSAM) has been developed for resolving binary mixture of food colorants eosin and erythrosine, which show overlapped spectra. The method is based on the complexation of food dyes eosin and erythrosine with Fe(III) complexing reagent at pH 5.5 and solubilizing complexes in triton x-100 micellar media. Absorbances at the two pairs of wavelengths, 540 and 550 nm (when eosin acts as analyte) or 518 and 542 nm (when erythrosine act as analyte) were monitored. This method has satisfactorily been applied for the determination of eosin and erythrosine dyes in synthetic mixtures and commercial products.

Simultaneous spectrophotometric determination of minoxidil and tretinoin by the H-point standard addition method and partial least squares

2009 ◽  
Vol 63 (3) ◽  
Author(s):  
Maryam Bordbar ◽  
Ali Yeganeh-Faal ◽  
Jahanbakhsh Ghasemi ◽  
Mohammad Ahari-Mostafavi ◽  
Nahid Sarlak ◽  
...  
Keyword(s):  
Least Squares ◽  
Partial Least Squares ◽  
Standard Addition ◽  
Partial Least Square ◽  
Least Square ◽  
Standard Addition Method ◽  
Relative Standard Error ◽  
Addition Method ◽  
Relative Standard

AbstractA simple, sensitive and selective spectrophotometric method for simultaneous determination of tretinoin and minoxidil using partial least square (PLS) calibration and H-point standard addition method (HPSAM) is described. The results of the H-point standard addition method show that minoxidil and tretinoin can be determined simultaneously with the concentration ratio of tretinoin to minoxidil varying from 2: 1 to 1: 33 in mixed samples. A partial least squares multivariate calibration method for the analysis of binary mixtures of tretinoin and minoxidil was also developed. The total relative standard error for applying the PLS method to eleven synthetic samples in the concentration range of 0–10 μg mL−1 tretinoin and 0–32 μg mL−1 minoxidil was 2.59 %. Both proposed methods (PLS and HPSAM) were also successfully applied in the determination of tretinoin and minoxidil in several synthetic pharmaceutical solutions.

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