Open Access. Powered by Scholars. Published by Universities.®

Chemistry Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 6 of 6

Full-Text Articles in Chemistry

Putting The Chemistry Back Into Analytical Chemistry, Julian Tyson Jan 1992

Putting The Chemistry Back Into Analytical Chemistry, Julian Tyson

Chemistry Department Faculty Publication Series

Aspects of the current status of and research in analytical chemistry are briefly discussed and the need for cost effective analytical procedures is emphasized. The present and future of a number of aspects of flow-injection analysis are considered. These include the basic theory, the kinetic features, the control features, time-based methodology, and the coupling of sample pretreatment with instrumentation. Several aspects of this latter topic are con­sidered with particular reference to the flow-injection atomic spectrometry combination. Problems of kinetic mismatch between chemistry, manifold residence, and instrument op­eration are discussed and some possible solutions proposed including the use of closed loop …


Supercritical Carbon Dioxide As A Carrier For Sample Introduction In Atomic Absorption Spectrometry, S. R. Bysouth, Julian Tyson Jan 1992

Supercritical Carbon Dioxide As A Carrier For Sample Introduction In Atomic Absorption Spectrometry, S. R. Bysouth, Julian Tyson

Chemistry Department Faculty Publication Series

The use of a supercritical carbon dioxide carrier to transport organic solutions of metal complexes to a heated restrictor is demonstrated as a means of aerosol or vapour generation for sample introduction in flame atomic absorption spectrometry. Calibrations obtained using conventional pneumatic nebulisation of continuously aspirated solutions or using flow injection into a water carrier are compared with those obtained using the carbon dioxide carrier. Injection of solutions of copper pyrrolidinedithiocarbamate in 4-methyl pentan-2-one into a carbon dioxide carrier at 1000 p.s.i. was shown to be 1.2 times more sensitive than injection of the same solutions into a water carrier …


Simple Model Of Flow-Injection Sample Transport For Prediction Of Peak Heights, S. R. Bysouth, Julian Tyson Jan 1992

Simple Model Of Flow-Injection Sample Transport For Prediction Of Peak Heights, S. R. Bysouth, Julian Tyson

Chemistry Department Faculty Publication Series

No abstract provided.


Flow Injection Spectrochemical Analysis At The Winter Conference, Julian Tyson Jan 1992

Flow Injection Spectrochemical Analysis At The Winter Conference, Julian Tyson

Chemistry Department Faculty Publication Series

No abstract provided.


Study Of The Hexamethylenetetramine, Ammonia, And Formaldehyde System: Quantitative Determinations, Gary Lee Madsen Jan 1992

Study Of The Hexamethylenetetramine, Ammonia, And Formaldehyde System: Quantitative Determinations, Gary Lee Madsen

Dissertations

No abstract provided.


A Helium Discharge Detector For The Determination Of Organosulfur And Phosphorus Compounds, Tamara L. Tieman Jan 1992

A Helium Discharge Detector For The Determination Of Organosulfur And Phosphorus Compounds, Tamara L. Tieman

Dissertations, Theses, and Masters Projects

No abstract provided.