Abstract
A new design of the hydrogen atmosphere flame ionization detector is presented that involves a sheathed flow of gases. Consumption of hydrogen is reduced by an order of magnitude compared to earlier designs without compromising significantly the sensitivity and selectivity. Linear dynamic range calibrations and molar response factors as a function of hydrogen flow are presented for iron, carbon, lead and tin. Analysis of fish tissue spiked with 135 ppb (10 9) (as tin) each of tetra- n-propyl tin, tri- n-butyl tin hydride and tetra- n-butyl tin demonstrates analytical utility.
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