Simultaneous determination of ethanol and total sulfite in white wine using on-line cone reservoirs membraneless gas-liquid separation flow system

2019 ◽  
Vol 149 ◽  
pp. 104007 ◽  
Author(s):  
Pitchnaree Kraikaew ◽  
Thanakorn Pluangklang ◽  
Nuanlaor Ratanawimarnwong ◽  
Kanchana Uraisin ◽  
Prapin Wilairat ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Flow System ◽  
White Wine ◽  
Separation Flow ◽  
Liquid Separation ◽  
On Line

scholarly journals Automatic continuous on-line monitoring of salicylic acid and acetylsalicylic acid in pharmaceuticals

1990 ◽  
Vol 12 (6) ◽  
pp. 263-266 ◽  
Author(s):  
J. M. López Fernández ◽  
M. D. Luque de Castro ◽  
M. Valcárcel
Keyword(s):  
Salicylic Acid ◽  
Acetylsalicylic Acid ◽  
Simultaneous Determination ◽  
Pharmaceutical Preparation ◽  
Pharmaceutical Preparations ◽  
Sampling Frequency ◽  
The Other ◽  
Dissolution Test ◽  
On Line

An asymmetrical FIA merging-zones manifold based on the dual injection of two sample microvolumes was developed for the simultaneous determination of salicylic acid and acetylsalicylic acid in pharmaceutical preparations at a sampling frequency of 30/h. The complex formed between the Fe(III) reagent continuously introduced in the system and salicylic acid was monitored photometrically at 520 nm. One of the sample plugs was prehydrolysed on injection into an NaOH stream and was circulated through a longer channel than the other plug. This yielded two FIA peaks corresponding to salicylic acid and the overall content, respectively. The proposed manifold was successfully used to control the dissolution test of a pharmaceutical preparation.

Simultaneous Determination of Benzoic Acid and Sorbic Acid in Food Products by CE after On-line Preconcentration by Dynamic pH Junction

2011 ◽  
Vol 73 (11-12) ◽  
pp. 1217-1221 ◽  
Author(s):  
Xinfeng Zhang ◽  
Shuxia Xu ◽  
Yonghua Sun ◽  
Yanyan Wang ◽  
Cheng Wang
Keyword(s):  
Benzoic Acid ◽  
Simultaneous Determination ◽  
Sorbic Acid ◽  
Food Products ◽  
Dynamic Ph Junction ◽  
On Line

Simultaneous Determination of Cross-Reactive Leukotrienes in Biological Matrices Using On-line Liquid Chromatography Immunochemical Detection

1996 ◽  
Vol 68 (23) ◽  
pp. 4101-4106 ◽  
Author(s):  
A. J. Oosterkamp ◽  
H. Irth ◽  
L. Heintz ◽  
G. Marko-Varga ◽  
U. R. Tjaden ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Biological Matrices ◽  
Immunochemical Detection ◽  
On Line

Application of a vidicon spectrometer for simultaneous multicomponent drug determinations.

1976 ◽  
Vol 22 (11) ◽  
pp. 1862-1867 ◽  
Author(s):  
A E McDowell ◽  
R S Harner ◽  
H L Pardue
Keyword(s):  
Simultaneous Determination ◽  
Small Computer ◽  
Ultraviolet Region ◽  
Matrix Equations ◽  
Aqueous Mixtures ◽  
Two Component ◽  
On Line ◽  
Absorbance Data ◽  
Rapid Scanning

Abstract A rapid scanning vidicon spectrometer has been evaluated for the simultaneous determination of drugs in mixtures, without a separation step. Spectral data in the ultraviolet region are collected on-line with a small computer at repetition rates of 100 scans per second. Absorbance data at several wavelengths are processed by matrix equations to resolve them into the concentration of each component in each mixture. Results are reported for two-component mixtures of procainamide and N-acetylprocainamide in serum, for two-component aqueous mixtures of butabarbital and seconbarbital, and for seven-component aqueous mixtures of phenobarbital, diphenylhydantoin, aminophylline, acetaminophen, salicylamide, phenylbutazone, and secobarbital. We conclude that the computer-inter-faced vidicon spectrometer is a viable tool for simultaneous multicomponent determinations.

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