Simultaneous determination of acesulfame-K and aspartame using linear sweep voltammetry and multivariate calibration

2013 ◽  
Vol 106 ◽  
pp. 347-350 ◽  
Author(s):  
G.D. Pierini ◽  
N.E. Llamas ◽  
W.D. Fragoso ◽  
S.G. Lemos ◽  
M.S. Di Nezio ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Multivariate Calibration ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep

scholarly journals Development of multivariate calibration method for simultaneous determination of nickel, lead and zinc in tap water

2015 ◽  
Vol 18 (2) ◽  
pp. 145-151
Author(s):  
Chau Minh Huynh ◽  
Thu Du Ly ◽  
Thach Thai Pham ◽  
Tran Thi Bao Pham ◽  
Minh Khanh Duong ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Absorption Spectra ◽  
Multivariate Calibration ◽  
Tap Water ◽  
Calibration Method ◽  
Calibration Model ◽  
Determination Of Nickel ◽  
Lead And Zinc ◽  
Nickel Lead

Conventional spectrophotometric methods for simultaneous determination of nickel, lead and zinc in forms of complexes with a reagent is not feasible due to the overlap of their absorption spectra. A multivariate calibration method was used to overcome this problem. In this study, the calibration model was constructed based on absorption spectra of 30 mixture standards in the range from 490 to 600 nm. Factors influencing experimental results such as amount of reagents, pH, and color development time were optimized. The standard calibration ranges for determination of nickel, lead and zinc were found at 0.5-5 ppm. The method was applied for determination of these ions in tap water samples at ppm level, with recoveries (and RSD) of nickel, lead and zinc were 103.3 % (3.0 %), 74.9 % (11.5 %) and 104.6 % (4.6 %), respectively.

Electrochemical Studies of an Iron Porphyrin Immobilized on Nb2O5/SiO2 and Its Application for Simultaneous Determination of Dopamine and Ascorbic Acid Using Multivariate Calibration Methodology

2007 ◽  
Vol 19 (24) ◽  
pp. 2543-2550 ◽  
Author(s):  
Tatiane Skeika ◽  
Crislaine Marcovicz ◽  
Shirley Nakagaki ◽  
Sérgio Toshio Fujiwara ◽  
Karen Wohnrath ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Simultaneous Determination ◽  
Multivariate Calibration ◽  
Iron Porphyrin ◽  
Electrochemical Studies

Anodic Voltammetric Behavior of Lincomycin and its Electroanalytical Determination in Pharmaceutical Dosage form and Urine at Gold Electrode

2017 ◽  
Vol 231 (5) ◽  
Author(s):  
Jyothi C. Abbar ◽  
Manjunath D. Meti ◽  
Sharanappa T. Nandibewoor
Keyword(s):  
Gold Electrode ◽  
Dosage Form ◽  
Oxidation Process ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep ◽  
Experimental Conditions ◽  
Pharmaceutical Dosage Form ◽  
Antibiotic Drug ◽  
Voltammetric Behavior

AbstractThe anodic voltammetric behavior of an antibiotic drug, lincomycin hydrochloride (LIN) at gold electrode (GE) has been investigated using cyclic and linear sweep voltammetry. The dependence of the current on pH, concentration and scan rate were investigated to optimize the experimental conditions for the determination of lincomycin. The anodic peak was characterized and the process was adsorption-controlled. The number of electrons transferred in the oxidation process was calculated. In the range of 8.0×10

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