Ion-Selective Electrodes for Promethazine Determinations in Pharmaceutical Preparations and Application to Flow Injection Analysis

1997 ◽  
Vol 86 (11) ◽  
pp. 1234-1238 ◽  
Author(s):  
L.F. Jose ◽  
C. Lima ◽  
M. Conceiçao ◽  
B.S.M. Montenegro ◽  
M. Goreti ◽  
...  
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Pharmaceutical Preparations ◽  
Ion Selective Electrodes

Semiautomatic Determination of Furanic Aldehydes in Food and Pharmaceutical Samples by a Stopped-Flow Injection Analysis Method

1993 ◽  
Vol 76 (6) ◽  
pp. 1255-1261 ◽  
Author(s):  
A Espinosa-Mansilla ◽  
A Muñoz Dela Peña ◽  
F Salinas
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Pharmaceutical Preparations ◽  
Thiobarbituric Acid ◽  
Food Samples ◽  
Analytical Determination ◽  
Stopped Flow ◽  
Analysis Method ◽  
Analysis Technique

Abstract A kinetic study of the reactions of 5-hydroxymethyl-2-furfuraldehyde and furfural with 2-thiobarbituric acid (TBA) by a stopped-flow flow injection analysis technique has been undertaken. A semiautomatic method for the analytical determination of these furanic aldehydes is proposed on the basis of reaction with TBA. The proposed stopped-flow method was successfully applied to several commercial pharmaceutical preparations and food samples. The procedure is faster than the earlier procedure for determination of these compounds in foods and pharmaceuticals.

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