Electrodes in series. Simultaneous flow injection determination of chloride and pH with ion-selective electrodes

The Analyst ◽  
1986 ◽  
Vol 111 (11) ◽  
pp. 1231 ◽  
Author(s):  
Jacobus F. van Staden
Keyword(s):  
Flow Injection ◽  
Ion Selective Electrodes ◽  
In Series

scholarly journals Automation of flow injection gas diffusion-ion chromatography for the nanomolar determination of methylamines and ammonia in seawater and atmospheric samples

1995 ◽  
Vol 17 (6) ◽  
pp. 205-212 ◽  
Author(s):  
Stuart W. Gibb ◽  
John W. Wood ◽  
R. Fauzi ◽  
C. Mantoura
Keyword(s):  
Ion Chromatography ◽  
Flow Injection ◽  
Aqueous Media ◽  
Control Unit ◽  
Gas Diffusion ◽  
Aqueous Sample ◽  
In Series ◽  
And Performance ◽  
Improved Design

The automation and improved design and performance of Flow Injection Gas Diffusion-Ion Chromatography (FIGD-IC), a novel technique for the simultaneous analysis of trace ammonia (NH3) and methylamines (MAs) in aqueous media, is presented. Automated Flow Injection Gas Diffusion (FIGD) promotes the selective transmembrane diffusion of MAs and NH3from aqueous sample under strongly alkaline (pH > 12, NaOH), chelated (EDTA) conditions into a recycled acidic acceptor stream. The acceptor is then injected onto an ion chromatograph where NH3and the MAs are fully resolved as their cations and detected conductimetrically. A versatile PC interfaced control unit and data capture unit (DCU) are employed in series to direct the selonoid valve switching sequence, IC operation and collection of data. Automation, together with other modifications improved both linearily (R2> 0.99 MAs 0-100 nM, NH30-1000 nM) and precision (<8%) of FIGD-IC at nanomolar concentrations, compared with the manual procedure. The system was successfully applied to the determination of MAs and NH3in seawater and in trapped particulate and gaseous atmospheric samples during an oceanographic research cruise.

Potentiometric flow injection system for the determination of polyethoxylate nonionic surfactants using tubular ion-selective electrodes

2001 ◽  
Vol 438 (1-2) ◽  
pp. 305-313 ◽  
Author(s):  
Sı́lvia Martı́nez-Barrachina ◽  
Manuel del Valle ◽  
Lleonard Matia ◽  
Ramón Prats ◽  
Julián Alonso
Keyword(s):  
Flow Injection ◽  
Nonionic Surfactants ◽  
Injection System ◽  
Ion Selective Electrodes ◽  
Flow Injection System

scholarly journals New Conventional Coated-Wire Ion-Selective Electrodes for Flow-Injection Potentiometric Determination of Chlordiazepoxide

2005 ◽  
Vol 21 (9) ◽  
pp. 1037-1042 ◽  
Author(s):  
Y. M. ISSA ◽  
N. T. ABDEL-GHANI ◽  
A. F. SHOUKRY ◽  
Howayda M. AHMED
Keyword(s):  
Flow Injection ◽  
Potentiometric Determination ◽  
Ion Selective Electrodes ◽  
Coated Wire
Sign in / Sign up

Export Citation Format

Share Document