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Full-Text Articles in Chemistry
Flow Injection Solid Phase Extraction With Chromosorb 102: Determination Of Lead In Soil And Waters By Flame Atomic Absorption Spectrometry, L Elci, Z Arslan, Jf Tyson
Flow Injection Solid Phase Extraction With Chromosorb 102: Determination Of Lead In Soil And Waters By Flame Atomic Absorption Spectrometry, L Elci, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Calcium, Magnesium And Strontium In Soils By Flow Injection Flame Atomic Absorption Spectrometry, Z Arslan, Jf Tyson
Determination Of Calcium, Magnesium And Strontium In Soils By Flow Injection Flame Atomic Absorption Spectrometry, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Closed-Loop Recirculating Manifold For Matrix Isolation In Flow Injection Flame Atomic Absorption Spectrometry. Analysis Of Silver Electrolysis Solutions, Ebenezer Debrah, Julian Tyson, Mw Hinds
Closed-Loop Recirculating Manifold For Matrix Isolation In Flow Injection Flame Atomic Absorption Spectrometry. Analysis Of Silver Electrolysis Solutions, Ebenezer Debrah, Julian Tyson, Mw Hinds
Chemistry Department Faculty Publication Series
Two flow injection procedures have been investigated for the determination of some elements in silver electrolysis solutions, for which the problem of the formation of silver acetylide needs to be addressed. A single line manifold was found to give acceptable results for limited time periods, but for prolonged operation it was necessary to remove the silver. This was achieved with a recirculating reactor in which the silver was precipitated as the chloride and retained on a filter of nylon fibers. Good recoveries of copper, iron, nickel and zinc from solutions containing up to 100 g/l. silver were obtained with over …
Continuous Flow Dilution For Flame Atomic Absorption Spectrometry Using A Variable Volume Dilution Chamber And Peak Area Measurement, Ernest Beinrohr, Pavol Csemi, Julian Tyson
Continuous Flow Dilution For Flame Atomic Absorption Spectrometry Using A Variable Volume Dilution Chamber And Peak Area Measurement, Ernest Beinrohr, Pavol Csemi, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Flow Injection Manifolds With Membrane Filters For Pre-Concentration And Interference Removal By Precipitation Flow Injection Flame Atomic Absorption Spectrometry, Ebenezer Debrah, C. E. Adeeyinwo, S. R. Bysouth, Julian Tyson
Flow Injection Manifolds With Membrane Filters For Pre-Concentration And Interference Removal By Precipitation Flow Injection Flame Atomic Absorption Spectrometry, Ebenezer Debrah, C. E. Adeeyinwo, S. R. Bysouth, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Use Of Masking Agents In The Determination Of Lead In Tap Water By Flame Atomic Absorption Spectrometry With Flow Injection Pre-Concentration, S. R. Bysouth, Julian Tyson, Peter B. Stockwell
Use Of Masking Agents In The Determination Of Lead In Tap Water By Flame Atomic Absorption Spectrometry With Flow Injection Pre-Concentration, S. R. Bysouth, Julian Tyson, Peter B. Stockwell
Chemistry Department Faculty Publication Series
No abstract provided.
Study Of The Possible Benefits Of Flow Injection Sample Introduction For Flame Atomic Absorption Spectrometry, Julian Tyson, C. E. Adeeyinwo, S. R. Bysouth
Study Of The Possible Benefits Of Flow Injection Sample Introduction For Flame Atomic Absorption Spectrometry, Julian Tyson, C. E. Adeeyinwo, S. R. Bysouth
Chemistry Department Faculty Publication Series
No abstract provided.
Flow-Injection Techniques For The Removal Of Stable-Compound Interferences In Flame Atomic Absorption Spectrometry Of Calcium, C. E. Adeeyinwo, Julian Tyson
Flow-Injection Techniques For The Removal Of Stable-Compound Interferences In Flame Atomic Absorption Spectrometry Of Calcium, C. E. Adeeyinwo, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Network Flow Injection Manifolds For Sample Dilution And Calibration In Flame Atomic Absorption Spectrometry, Julian Tyson, S. R. Bysouth
Network Flow Injection Manifolds For Sample Dilution And Calibration In Flame Atomic Absorption Spectrometry, Julian Tyson, S. R. Bysouth
Chemistry Department Faculty Publication Series
No abstract provided.
Flow Manifold For Automated On-Line Dilution Of Standards For Flame Atomic Absorption Spectrometry And Its Use In A Null Measurement Method, S. R. Bysouth, Julian Tyson
Flow Manifold For Automated On-Line Dilution Of Standards For Flame Atomic Absorption Spectrometry And Its Use In A Null Measurement Method, S. R. Bysouth, Julian Tyson
Chemistry Department Faculty Publication Series
A flow manifold that automatically dilutes solutions presented to a flame atomic absorption spectrometer while maintaining a constant flow to the nebuliser is described. The manifold is based on a fixed-speed pump, together with a computer-controlled stream switching valve and pump. The computer is also used for data acquisition and handling. In addition to the production of solutions for a conventional calibration procedure, the system is also used for a novel calibration procedure whereby the stock standard solution is automatically diluted by a known factor until its absorbance matches that of the sample. This null measurement method avoids the need …
A Comparison Of Curve Fitting Algorithms For Flame Atomic Absorption Spectrometry, S. R. Bysouth, Julian Tyson
A Comparison Of Curve Fitting Algorithms For Flame Atomic Absorption Spectrometry, S. R. Bysouth, Julian Tyson
Chemistry Department Faculty Publication Series
A comparison of six commercially available curve fitting algorithms for calibration in flame atomic absorption spectrometry (FAAS) has been made. Programs using the algorithms were written in BAsrc for a microcomputer and, where possible, tested against the commercial version. Calibration curves for magnesium, chromium and nickel produced by the algorithms were compared, on the basis of the sum of squares of the percentage deviations and its root mean square, with each other and with linear interpolation and manual fitting. The standard deviations of the goodness of fit parameters were calculated to indicate significant differences between the fits obtained. With the …
A Variable Dispersion Flow Injection Manifold For Calibration And Sample Dilution In Flame Atomic Absorption Spectrometry, Julian Tyson, James R. Mariara, J. M.H. Appleton
A Variable Dispersion Flow Injection Manifold For Calibration And Sample Dilution In Flame Atomic Absorption Spectrometry, Julian Tyson, James R. Mariara, J. M.H. Appleton
Chemistry Department Faculty Publication Series
A flow injection (FI) introduction system for flame atomic absorption spectrometry (FAAS) has been constructed for single-standard calibration and sample dilution. Dilution factors ranging from 5.93 to 38.8 in six discrete stages were produced by replicate injection of 12.5-pl volumes into an aqueous carrier stream flowing down lines of different lengths. The dilution factors were measured for five different solutions for each line. No dependence on concentration was found and the relative standard deviations ranged from 0.75 to 3.1%. The manifold was evaluated by the analysis of solutions of magnesium (6,12.5 and 35 p.p.m.), nickel (180 p.p.m.), calcium (75 p.p.m.) …