Bismuth Modified Disposable Pencil-Lead Electrode for Simultaneous Determination of 2-Nitrophenol and 4-Nitrophenol by Net Analyte Signal Standard Addition Method

2011 ◽  
Vol 23 (9) ◽  
pp. 2241-2247 ◽  
Author(s):  
Karim Asadpour-Zeynali ◽  
Parvaneh Najafi-Marandi
Keyword(s):  
Simultaneous Determination ◽  
Standard Addition ◽  
Standard Addition Method ◽  
Addition Method ◽  
Net Analyte Signal ◽  
Analyte Signal ◽  
Lead Electrode ◽  
Pencil Lead

scholarly journals Net analyte signal standard addition method for the simultaneous determination of cadmium and nickel

2009 ◽  
Vol 74 (7) ◽  
pp. 789-799 ◽  
Author(s):  
Karim Asadpour-Zeynali ◽  
Reza Majidi ◽  
Masoud Tahmasebpour
Keyword(s):  
Simultaneous Determination ◽  
Standard Addition ◽  
Differential Pulse ◽  
Single Step ◽  
Standard Addition Method ◽  
Differential Pulse Polarography ◽  
Addition Method ◽  
Net Analyte Signal ◽  
Analyte Signal

A novel net analyte signal standard addition method (NASSAM) is presented for the simultaneous determination of Cd2+ and Ni2+ in their mixture by differential pulse polarography. The method combines the advantages of the standard addition method with the net analyte signal concept, which enables the extraction of information concerning a certain analyte from voltammograms of multi-component mixtures. This method has some advantages, such as: the use of a full voltammogram, realization in a single step, therefore it does not require calibration and prediction steps and only a few measurements are required for the determination. The simultaneous determination of Cd2+ and Ni2+ was performed in Britton-Robinson buffer (pH 2.87) and 0.40 M potassium thiocyanate solution.

scholarly journals Simultaneous Determination of Antazoline and Naphazoline by the Net Analyte Signal Standard Addition Method and Spectrophotometric Technique

2010 ◽  
Vol 93 (6) ◽  
pp. 1995-2001 ◽  
Author(s):  
Karim Asadpour-Zeynali ◽  
Raoof Ghavami ◽  
Roghayeh Esfandiari ◽  
Payam Soheili-Azad
Keyword(s):  
Simultaneous Determination ◽  
Multivariate Calibration ◽  
Standard Addition ◽  
Single Step ◽  
Standard Addition Method ◽  
Addition Method ◽  
Net Analyte Signal ◽  
Analyte Signal ◽  
Calibration Methods

Abstract A novel net analyte signal standard addition method (NASSAM) was used for simultaneous determination of the drugs anthazoline and naphazoline. The NASSAM can be applied for determination of analytes in the presence of known interferents. The proposed method is used to eliminate the calibration and prediction steps of multivariate calibration methods; the determination is carried out in a single step for each analyte. The accuracy of the predictions against the H-point standard addition method is independent of the shape of the analyte and interferent spectra. The net analyte signal concept was also used to calculate multivariate analytical figures of merit, such as LOD, selectivity, and sensitivity. The method was successfully applied to the simultaneous determination of anthazoline and naphazoline in a commercial eye drop sample.

Generalized Net Analyte Signal Standard Addition as a Novel Method for Simultaneous Determination: Application in Spectrophotometric Determination of Some Pesticides

2014 ◽  
Vol 97 (1) ◽  
pp. 252-258 ◽  
Author(s):  
Karim Asadpour-Zeynali ◽  
Elhameh Saeb ◽  
Javad Vallipour ◽  
Mehdi Bamorowat
Keyword(s):  
Spectrophotometric Determination ◽  
Standard Addition ◽  
Standard Addition Method ◽  
Addition Method ◽  
Net Analyte Signal ◽  
Analyte Signal ◽  
Novel Method ◽  
Single Standard ◽  
Generalized Net

Abstract Simultaneous spectrophotometric determination of three neonicotinoid insecticides (acetamiprid,imidacloprid, and thiamethoxam) by a novel methodnamed generalized net analyte signal standard addition method (GNASSAM) in some binary and ternarysynthetic mixtures was investigated. For this purpose, standard addition was performed using a single standard solution consisting of a mixture ofstandards of all analytes. Savings in time and amount of used materials are some of the advantages of this method. All determinations showed appropriate applicability of this method with less than 5% error. This method may be applied for linearlydependent data in the presence of known interferents. The GNASSAM combines the advantages of both the generalized standard addition method and net analyte signal; therefore, it may be a properalternative for some other multivariate methods.

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.

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