pfpd - The Pulsed Flame Photometric Detector A QuickTime...

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The Pulsed Flame Photometric Detector A QuickTime move (with sound narration) of the pulse flame photometric detector is available online (size 3.7 MB). For those with less available bandwidth and/or less patience a GIF animation is here too (size 212k). Like all GIF animations it is silent. Introduction The pulsed flame photometric detector (PFPD) is a relatively new weapon in the arsenal of the analytical chemist. Though it uses a flame like its namesake, the flame photometric detector or FPD invented over 30 years ago, the PFPD is a significant improvement because it can provide better sensitivity and selectivity for sulfur and phosphorus. The old FPD was generally only used for sulfur and phosphorus selective detection; however, the PFPD allows for selective detection of S and P primarily but also detects N, As, Sn, Se, Ge, Te, Sb, Br, Ga, In and Cu among others. Schematic of the pulsed flame photometric detector As this instrument's schematic diagram above shows, the PFDP has a combustion chamber (or combustor tube) like the old FPD and a photomultiplier tube ?or PMT?again like the FPD. However in this new detector, two different combustible gas flows enter the bottom of the combustion chamber through narrow gas lines. The normal FPD has only one fuel line?for hydrogen. (It also has air plumbed in.) The second incoming gas flow's job in the PFPD is to
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pfpd - The Pulsed Flame Photometric Detector A QuickTime...

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