A Combined Experimental Green Flow-Injection Procedure and Computational Analysis to Determine Amino Acids

2013 ◽  
Vol 3 (4) ◽  
pp. 419-433
Author(s):  
Samy Emara
Keyword(s):  
Amino Acids ◽  
Flow Injection ◽  
Computational Analysis ◽  
Injection Procedure

scholarly journals Spectrophotometric flow injection procedure to indirect determination of paracetamol in pharmaceutical formulations using o-tolidine as reagent

2018 ◽  
Vol 33 (2) ◽  
pp. 47
Author(s):  
Orlando Fatibello-Filho ◽  
Heberth Juliano Vieira
Keyword(s):  
Standard Deviation ◽  
Detection Limit ◽  
Flow Injection ◽  
Pharmaceutical Formulations ◽  
Injection Method ◽  
Indirect Determination ◽  
Analytical Curve ◽  
Relative Standard ◽  
Injection Procedure

A spectrophotometric flow injection method for the determination of paracetamol in pharmaceutical formulations is proposed. The procedure was based on the oxidation of paracetamol by sodium hypochloride and the determination of the excess of this oxidant using o-tolidine dichloride as chromogenic reagent at 430 nm. The analytical curve was linear in the paracetamol concentration range from 8.50 x 10-6 to 2.51 x 10-4 mol L-1 with a detection limit of 5.0 x 10-6 mol L-1. The relative standard deviation was smaller than 1.2% for 1.20 x 10-4 mol L-1 paracetamol solution (n = 10). The results obtained for paracetamol in pharmaceutical formulations using the proposed flow injection method and those obtained using a USP Pharmacopoeia method are in agreement at the 95% confidence level.

Spectrophotometric flow injection procedure for the on-line monitoring of sulphite in high ionic strength brine

The Analyst ◽  
1991 ◽  
Vol 116 (7) ◽  
pp. 701 ◽  
Author(s):  
Paul MacLaurin ◽  
Paul J. Worsfold ◽  
Alan Townshend ◽  
Neil W. Barnett ◽  
Michael Crane
Keyword(s):  
Ionic Strength ◽  
Flow Injection ◽  
High Ionic Strength ◽  
On Line ◽  
Injection Procedure
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