“…Comparison of Electron Capture and Hydrogen Flame Detectors for Gas Chromatographic Determination of Trace Amounts of Metal Chelates Sir: Various detectors-e.g., hydrogen flame ionization (8,4), thermionic emission ionization (9), argon ionization (1), thermal conductivity (9), electron capture (7, 8), and flame photometric (5)-have been used for the gas chromatographic determination of metal chelates, primarily acetylacetonates and fluorinated acetylacetonates. Although quantitative aspects of these detectors have been studied, especially of the electron capture (7,8) and flame ionization detectors (8,4), investigations of their relative performances have been limited.…”