New Voltammetric Approach to the Quantitative Estimation of Sildenafil Citrate in Tablets Using Disposable Pencil Graphite Electrode

ICP-OES Method for the Determination of Fe, Co, Mn, Cu, Pb, and Zn in Ore Samples From the Keban Region Using Experimental Design and Optimization Methodology

“…where Y represents the predicted response, β 0 is the intercept, β i and β ij are the linear effect and squared effect, respectively, β ij denotes the interaction effect, x i and x j are the independent factor variables. The mathematical solution of Equation 1 allows the prediction of factor levels that produce extreme point maximum or minimum response values corresponding to optimal experimental conditions (30,31).…”

“…This one-factor approach may give rise to the incorrect interpretation or wrong decision in finding extraction conditions where the other experimental factors are kept constant. A way to eliminate the disadvantages of onefactor optimization technique is the use of the experimental design and optimization techniques (30,31).…”

Rapid Spectrophotometric Methods for the Determination of Moxifloxacin and Sildenafil in Pharmaceutical Preparations Based on Reaction with 4-Aminoantipyrine

“…USP describes HPLC method for the examine sildenafil citrate [16]. Sildenafil citrate was determined by different methods including HPLC in pharmaceutical products [17,18], HPLC in Pharmaceutical products with other drugs [19,20], HPLC in dietary supplements [21], CGC in pharmaceutical formulations and dietary supplements [22,23], HPTLC in commercial lifestyle products [24], electroanalytical methods in pharmaceutical preparations [25][26][27] and flow injection analysis in tablets using UV-detection [28] and amperometric detection [29]. Spectrophotometric methods, such as spectrophotometry through ion-associate formation reactions [30,31], ion-pair reactions [30,32], charge-transfer complexes [33], extractive spectrophotometry [34] and direct UV-spectrophotometry [35] were also communicated for the analysis of sildenafil citrate in pharmaceuticals.…”

A New Chemometric Strategy in Electrochemical Method Optimization for the Quantification of Cefdinir in Tablets, Effervescent Tablets and Suspension Samples

“…Chemometric optimization approach is a useful way for the accurate optimization of experimental conditions for developing a new analytical method that cannot be correctly optimized by one‐factor optimization technique. Some published articles on the optimization of analytical methods in different areas of analytical chemistry were reported .…”