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Articles 1 - 9 of 9
Full-Text Articles in Chemistry
Determination Of Rate Constants By A Double-Line Flow-Injection Method Incorporating A Well-Stirred Tank Reactor, Rt Echols, Jf Tyson
Determination Of Rate Constants By A Double-Line Flow-Injection Method Incorporating A Well-Stirred Tank Reactor, Rt Echols, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Evaluation Of The Precision Of The Flow Injection Doublet Peak, Julian Tyson, Rt Echols
Evaluation Of The Precision Of The Flow Injection Doublet Peak, Julian Tyson, Rt Echols
Chemistry Department Faculty Publication Series
The factors affecting the precision of the flow injection doublet peak method are discussed with particular reference to the contribution from the uncertainty associated with the calibration procedure. A single-line flow injection manifold was used in which the concentration gradients were generated by alternating helical reactors and the reaction products were monitored by a simple detector incorporating diodes as light source and intensity transducer. The reactions between lanthanum and Methyl Thymol Blue and between sodium hydroxide and hydrochloric acid in the presence of Bromothymol Blue were used. Optimization studies involved the method of steepest ascent, two figures of merit (the …
Comparison Of Mixing Devices For Flow Injection Determinations Based On Doublet Peak Formation, Julian Tyson, Rt Echols
Comparison Of Mixing Devices For Flow Injection Determinations Based On Doublet Peak Formation, Julian Tyson, Rt Echols
Chemistry Department Faculty Publication Series
The well-stirred tank model accurately describes the separation (At) between flow-injection doublet peaks and has been found to be applicable to a variety of mixing devices that do not contain moving parts such as a magnetic follower. The reaction between lanthanum(III) and methyl thymol blue was used as a model reaction for a comparison study of mixing devices. Column and open-tubular reactors were included in the study. Mixing devices were compared on the basis of the straight line fit of At versus the natural logarithm of the concentration of injected La(III). The linearity of the At-ln[La(III)] plots was equivalent for …
Solid-State Microprocessor Controlled Detector For Doublet Peak Measurements In Flow Injection Analysis, Julian Tyson, A Murfin, M Conboy, M K. Carroll
Solid-State Microprocessor Controlled Detector For Doublet Peak Measurements In Flow Injection Analysis, Julian Tyson, A Murfin, M Conboy, M K. Carroll
Chemistry Department Faculty Publication Series
No abstract provided.
Flow Analysis. A Report On The 6th International Conference On Flow Analysis Held In Toledo, Spain, June 8-11, 1994, Julian Tyson
Flow Analysis. A Report On The 6th International Conference On Flow Analysis Held In Toledo, Spain, June 8-11, 1994, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Comparison Of The Maximum Sensitivity Of Different Flow Injection Manifold Configurations: Alternating Variable Search Optimization Of The Iron(Ii)/1,10-Phenanthroline System, Sj Chalk, Julian Tyson
Comparison Of The Maximum Sensitivity Of Different Flow Injection Manifold Configurations: Alternating Variable Search Optimization Of The Iron(Ii)/1,10-Phenanthroline System, Sj Chalk, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Flow Injection Reagent Introduction By Supported Liquid And Nafion Membranes: Determination Of Phosphate, Stuart J. Chalk, Julian Tyson
Flow Injection Reagent Introduction By Supported Liquid And Nafion Membranes: Determination Of Phosphate, Stuart J. Chalk, Julian Tyson
Chemistry Department Faculty Publication Series
The use of membrane tubing for the introduction of reagents for the determination of phosphate in waters by flow injection analysis was studied. The use of membranes eliminates the need for confluence points in the design of flow injection manifolds. This increases the sensitivity of the manifold by providing a sufficient reagent excess for the reaction without diluting the sample. Methods for the introduction of acid, molybdate and hydrazine were devised for the determination of phosphate by the Molybdenum Blue method. Several membranes were examined and Nafion and Accurel (microporous polypropylene) were found to be most useful. Molybdate introduction was …
Flow Injection Techniques, Julian Tyson
Flow Injection Techniques, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Diode-Laser-Based Detector For Doublet Peak Measurements In Flow Injection Analysis, Mary K. Carroll, Julian Tyson
Diode-Laser-Based Detector For Doublet Peak Measurements In Flow Injection Analysis, Mary K. Carroll, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.