Detection of Metal Chelates in Gas Liquid Chromatography by Electron Capture.

A New Selective-Nonselective Flame Photometric Detector for Gas Chromatography.

“…The migration of solute bands of negligible concentration through chromatographic columns has been intensively investigated (3,20,25). When the solute concentration is increased, the processes in the column become more complex, and at least two additional effects must be taken into account.…”

“…These are nonlinearity of solute] distribution between the phases (0, 16) and flow velocity increases in solute bands due to sorption effects (1, 15,18,20,21,27).…”

Solvent Extraction of Metal Ions with Trifluoroacetylacetone.

“…A plot of the logarithm of the total concentration of all iron species (remaining in the aqueous phase) as a function of equilibration time is shown for four pH values in Figure 2. Notice that at an equilibrium pH value of 2.30, iron is extracted nearly quantitatively in only 5 minutes, whereas at pH 1.60 quantitative extraction would require about 20 Because a plot of log[Fej vs. time yields a straight line, one concludes that a pseudo first-order reaction is occurring. The rate of this reaction is dramatically pH dependent.…”

Response of Electron Capture Detector to Metal Trifluoroacetylacetonates

“…has recently been developed.1) Ross et al [2][3][4] has described the use of the electron capture de-chelates.…”