A new spectrophotometric method for the determination of total and ferric iron in rain water at the ppb level

2001 ◽  
Vol 369 (6) ◽  
pp. 530-534 ◽  
Author(s):  
K. S. Patel ◽  
A. Shukla ◽  
A. Goswami ◽  
S. K. Chandavanshi ◽  
P. Hoffmann
Keyword(s):  
Spectrophotometric Method ◽  
Ferric Iron ◽  
Rain Water

A new spectrophotometric method for the determination of ferrous iron in the presence of ferric iron

2007 ◽  
Vol 44 (3) ◽  
pp. 171-181 ◽  
Author(s):  
Leandro Herrera ◽  
Pauline Ruiz ◽  
Juan C. Aguillon ◽  
Alexis Fehrmann
Keyword(s):  
Spectrophotometric Method ◽  
Ferrous Iron ◽  
Ferric Iron

A new and simple spectrophotometric method for the determination of selenium in the presence of copper and tellurium

1993 ◽  
Vol 71 (6) ◽  
pp. 834-835 ◽  
Author(s):  
Güler Somer ◽  
Nuray Kutay
Keyword(s):  
Spectrophotometric Method ◽  
Ferrous Iron ◽  
Indirect Method ◽  
Ferric Iron

Selenium in anodic slime is determined by using an indirect method. Selenite is reduced by ferrous iron, the ferric iron formed is complexed with KSCN, and the absorbance at 480 nm is measured. In this way selenium (10−3–10−2 M) can be determined in the presence of copper and tellurium without any separation.

scholarly journals Spectrophotometric method for the determination of ferric iron with acetylacetone

1959 ◽  
Vol 8 (11) ◽  
pp. 710-714 ◽  
Author(s):  
Tsunenobu SHIGEMATSU ◽  
Masayuki TABUSHI
Keyword(s):  
Spectrophotometric Method ◽  
Ferric Iron

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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