New Batch and Flow Injection Spectrophotometric Method for Determination of Captopril in Some Pharmaceutical Products

2018 ◽  
Vol 8 (2) ◽  
pp. 207-221
Author(s):  
Yousif Maaroof
Keyword(s):  
Flow Injection ◽  
Spectrophotometric Method ◽  
Pharmaceutical Products

scholarly journals Spectrophotometric determination of peroxydisulphate with o-dianisidine by flow injection

1990 ◽  
Vol 68 (10) ◽  
pp. 1750-1756 ◽  
Author(s):  
Paul M. Shiundu ◽  
Adrian P. Wade ◽  
S. B. Jonnalagadda
Keyword(s):  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Spectrophotometric Method ◽  
Ion Concentration ◽  
Injection Method ◽  
Absorbance Maximum ◽  
Accurate Knowledge ◽  
Stable Product

Precise and accurate knowledge of peroxydisulfate ion concentration is critical in industrial polymer production, where it is extensively used as an activator. Its ability to oxidize in either acidic, neutral, or alkali media also makes it widely applicable in many other areas of chemistry.In this paper we present an optimized spectrophotometric flow injection method for determination of peroxydisulfate. The analyte oxidizes o-dianisidine to form a stable product which has a convenient absorbance maximum at 450 nm. This provides a simple and sensitive alternative to present methods which are more costly, tedious, or complex. Keywords: spectrophotometric method, peroxydisulphate.

Automated determination of cholinesterase activity in plasma and erythrocytes by flow-injection analysis, and application to identify subjects sensitive to succinylcholine.

1989 ◽  
Vol 35 (1) ◽  
pp. 77-80 ◽  
Author(s):  
P Lainé-Cessac ◽  
A Turcant ◽  
P Allain
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Spectrophotometric Method ◽  
Healthy Subjects ◽  
Cholinesterase Activity ◽  
Determination Of Activity ◽  
Hydrolysis Of ◽  
Automated Determination

Abstract This automated spectrophotometric method for determination of cholinesterase activity in erythrocytes and plasma is based on measurement of the choline produced at 30 degrees C by the hydrolysis of acetyl-, butyryl-, or succinylcholine. Blanks, standards, and samples are prepared by a Gilson robotic unit. Use of flow-injection analysis for detection allows use of smaller volumes of reagent and sample. We applied this method to the study of 91 healthy subjects and members of two families with succinylcholine sensitivity. Results with use of the three different substrates for determination of activity in plasma correlated well (r greater than 0.94). Results for plasma and erythrocytes from healthy subjects are lower in women less than 50 years old than in women greater than 50 years or men. Values for plasma obtained with succinylcholine substrate (range: 31 to 100 U/L) allow detection of very sensitive subjects--AA phenotypes (less than 10 U/L)--but do not distinguish the UA from the UU phenotype.

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system

2014 ◽  
Vol 6 (21) ◽  
pp. 8494-8504 ◽  
Author(s):  
Piyawan Phansi ◽  
Camelia Henríquez ◽  
Edwin Palacio ◽  
Duangjai Nacapricha ◽  
Víctor Cerdà
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Spectrophotometric Method ◽  
Flow System ◽  
Multisyringe Flow Injection Analysis ◽  
System P ◽  
Determination Of Copper

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system (Chip–MSFIA–MPFS).

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