scholarly journals Sequential Injection Analysis of Anionic Surfactants Using On-line Preconcentration Technique and a Microfluidic Polymer Chip with an Embedded Ion-Selective Electrode as a Detector

2018 ◽  
Vol 86 (3) ◽  
pp. 122-127 ◽  
Author(s):  
Takashi MASADOME ◽  
Hiroaki ARAI
Keyword(s):  
Anionic Surfactants ◽  
Ion Selective Electrode ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
Selective Electrode ◽  
Preconcentration Technique ◽  
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Sequential injection analysis coupled to on-line benchtop proton NMR: Method development and application to the determination of synthetic cathinones in seized drug samples

Talanta ◽  
2021 ◽  
Vol 231 ◽  
pp. 122355
Author(s):  
Timothy J. Trinklein ◽  
Malati Thapa ◽  
Lexie A. Lanphere ◽  
John A. Frost ◽  
Sandra M. Koresch ◽  
...  
Keyword(s):  
Method Development ◽  
Proton Nmr ◽  
Synthetic Cathinones ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
Nmr Method ◽  
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scholarly journals Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1569
Author(s):  
Athina Dimitriadou ◽  
Aristidis Anthemidis
Keyword(s):  
Water Samples ◽  
Environmental Water ◽  
Sequential Injection Analysis ◽  
Gaseous Ammonia ◽  
Sequential Injection ◽  
Fluorimetric Determination ◽  
Purge And Trap ◽  
Separation And Preconcentration ◽  
On Line ◽  
T System

An innovative automatic purge-and-trap (P&T) system coupled with fluorimetric sequential injection (SI), for the on-line separation and preconcentration of volatile compounds, is presented. The truth of concept is demonstrated for the ammonium fluorimetric determination in environmental water samples with complex matrices without any pretreatment. The P&T flow system comprises a thermostated purge-vessel where ammonium is converted into gaseous ammonia and a trap-vessel for ammonia collection. This configuration results in matrix removal as well as analyte preconcentration, avoiding membrane-associated problems. All the main parameters affecting the efficiency of a P&T system were studied and optimized. The proposed method is characterized by a working range of 2.7–150.0 μg L−1 of NH4+, with a detection and quantification limit of 0.80 and 2.66 μg L−1, respectively, for a 10-mL sample consumption. The accuracy of the method was assessed by recovery assays in seawater, estuarine, and lake water samples as well as by the analysis of standard reference material.

Coupling of sequential injection analysis and capillary electrophoresis – Laser-induced fluorescence via a valve interface for on-line derivatization and analysis of amino acids and peptides

2006 ◽  
Vol 1132 (1-2) ◽  
pp. 297-303 ◽  
Author(s):  
Constantinos K. Zacharis ◽  
F.W. Alexander Tempels ◽  
Georgios A. Theodoridis ◽  
Anastasios N. Voulgaropoulos ◽  
Willy J.M. Underberg ◽  
...  
Keyword(s):  
Amino Acids ◽  
Capillary Electrophoresis ◽  
Laser Induced Fluorescence ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
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On-line monitoring of glucose and penicillin by sequential injection analysis

1996 ◽  
Vol 320 (2-3) ◽  
pp. 199-205 ◽  
Author(s):  
Rong Wei Min ◽  
Jens Nielsen ◽  
John Villadsen
Keyword(s):  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
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