scholarly journals Fourth Derivative Spectrophotometric Method for the Determination of Fungicide Maneb Using Sodium Molybdate

2011 ◽  
Vol 02 (02) ◽  
pp. 158-163 ◽  
Author(s):  
Manpreet Kaur ◽  
Ashok Kumar Malik ◽  
Baldev Singh
Keyword(s):  
Spectrophotometric Method ◽  
Sodium Molybdate ◽  
Fourth Derivative

Spectrophotometric method for the determination of demeclocycline using sodium molybdate as analytical reagent

1991 ◽  
Vol 103 (1-2) ◽  
pp. 65-70 ◽  
Author(s):  
Milena Jelikić-Stankov ◽  
Dejan Stankov ◽  
Dušan Malešev ◽  
Zorica Radović
Keyword(s):  
Spectrophotometric Method ◽  
Sodium Molybdate ◽  
Analytical Reagent

scholarly journals Simultaneous Determination of Cobalt(II) and Nickel(II) by Fourth-Order Derivative Spectrophotometric Method Using 2-Hydroxy-3-Methoxy Benzaldehyde Thiosemicarbazone

2007 ◽  
Vol 2007 ◽  
pp. 1-6 ◽  
Author(s):  
A. Praveen Kumar ◽  
P. Raveendra Reddy ◽  
V. Krishna Reddy
Keyword(s):  
Spectrophotometric Method ◽  
Present Method ◽  
Simultaneous Equations ◽  
Two Component System ◽  
Component System ◽  
Two Component ◽  
Alloy Steels ◽  
Fourth Derivative ◽  
Benzaldehyde Thiosemicarbazone

A simple and new simultaneous fourth derivative spectrophotometric method is proposed for the analysis of a two-component system containing cobalt(II) and nickel(II) without separation using 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone (HMBATSC) as a chromophoric reagent. The reagent reacts with cobalt(II) and nickel(II) at pH 6.0, forming soluble brown and yellow colored species, respectively. Cobalt(II) and nickel(II) present in the mixture are simultaneously determined without solving the simultaneous equations by measuring the fourth derivative amplitudes at 468.5 nm and 474.5 nm, respectively. The derivative amplitudes obey Beer's law at 468.5 nm and 474.5 nm for Co(II) and Ni(II) in the range 0.059–3.299μgmL-1and 0.058–3.285μgmL-1, respectively. A large number of foreign ions do not interfere in the present method. The present simultaneous method is used for the determination of micro amounts of cobalt in biological samples, nickel in plant samples, and in some alloy steels and soil sample.

scholarly journals Development of a derivative spectrophotometric method for the determination of fungicide zinc ethylenebisdithiocarbamate using sodium molybdate

2009 ◽  
Vol 20 (5) ◽  
pp. 993-998 ◽  
Author(s):  
Manpreet Kaur ◽  
Varinder Kaur ◽  
Ashok K. Malik ◽  
Neelam Verma ◽  
Baldev Singh ◽  
...  
Keyword(s):  
Spectrophotometric Method ◽  
Sodium Molybdate

Extractive Spectrophotometric Method for the Determination of Glibenclamide by Ion-Pair Complex in Pure Form and Pharmaceutical Formulation

2019 ◽  
Vol 9 (o3) ◽  
Author(s):  
RUAA MUAYAD MAHMOOD ◽  
HAMSA MUNAM YASSEN ◽  
SAMAR , NAJWA ISSAC ABDULLA AHMED DARWEESH ◽  
NAJWA ISSAC ABDULLA
Keyword(s):  
Spectrophotometric Method ◽  
Molar Absorptivity ◽  
Ion Pair ◽  
Pharmaceutical Formulation ◽  
Ratio Method ◽  
Colored Complex ◽  
Colored Product ◽  
Method Of Continuous Variation ◽  
Job's Method

Simple, rapid and sensitive extractive spectrophotometric method is presented for the determination of glibenclamide (Glb) based on the formation of ion-pair complex between the Glb and anionic dye, methyl orange (MO) at pH 4. The yellow colored complex formed was quantitatively extracted into dichloromethane and measured at 426 nm. The colored product obeyed Beer’s law in the concentration range of (0.5-40) μg.ml-1. The value of molar absorptivity obtained from Beer’s data was found to be 31122 L.mol-1.cm-1, Sandell’s sensitivity value was calculated to be 0.0159 μg.cm-2, while the limits of detection (LOD) and quantification (LOQ) were found to be 0.1086 and 0.3292 μg.ml-1, respectively. The stoichiometry of the complex created between the Glb and MO was 1:1 as determined via Job’s method of continuous variation and mole ratio method. The method was successfully applied for the analysis of pharmaceutical formulation.

UV spectroscopic method for determination of phenytoin in bulk and injection forms

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Quality Control ◽  
Spectrophotometric Method ◽  
Spectroscopic Method ◽  
Ich Guidelines ◽  
Precision And Accuracy ◽  
Routine Quality Control

Recent study was conducted to develop a simple UV spectrophotometric method to determine Phenytoin in bulk and injection form according to official requirement and validate as per ICH guidelines. λmax of Phenytoin was found 202 nm. Linearity existed perceived in the concentration assortment 2-8 μg/ml (r2 = 0.999) for the method. The method was validated pertaining to linearity, precision and accuracy studies, LOD and LOQ consistent with ICH guidelines. The existent method was establish to be simple, linear, precise, accurate as well as sensitive and can be applied for routine quality control enquiry for the analysis of Phenytoin in bulk and injection form.

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