A Simple and Selective Spectrophotometric Flow Injection Method for the Determination of Ultra Trace Amounts of Phenylhydrazine by Its Inhibition Effect on the Reaction of Victoria Blue B and Bromate in Micellar Medium

2013 ◽  
Vol 68 (5) ◽  
pp. 468-473
Author(s):  
M. Keyvanfard ◽  
Kh. Alizad
Keyword(s):  
Flow Injection ◽  
Micellar Medium ◽  
Injection Method ◽  
Inhibition Effect ◽  
Ultra Trace

scholarly journals Sequential determination of chromium(VI) and chromium(III) by potentiometric flow-injection method.

2000 ◽  
Vol 49 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Hiroki OHURA ◽  
Toshihiko IMATO ◽  
Ikuo MATSUO ◽  
Sumio YAMASAKI
Keyword(s):  
Flow Injection ◽  
Injection Method ◽  
Sequential Determination ◽  
Chromium Vi

scholarly journals Determination of Ultra-trace Mercury(II) by Flow-injection/Anodic Stripping Voltammetry Using a Track-etched Microporous Membrane Electrode

2013 ◽  
Vol 29 (10) ◽  
pp. 949-954 ◽  
Author(s):  
Hitoshi MIZUGUCHI ◽  
Kentaro NUMATA ◽  
Chiaki MONMA ◽  
Masamitsu IIYAMA ◽  
Kazuhiro TACHIBANA ◽  
...  
Keyword(s):  
Flow Injection ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Microporous Membrane ◽  
Membrane Electrode ◽  
Anodic Stripping ◽  
Ultra Trace

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.

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