A Dual Photomultliplier Flame Photometric Detector (FPD) for Simultaneous Determination of Sulfur, Phosphorus, or Tin Compounds
Don E. Clay and Robert R. WenskeThe use of dual photomultipliers on a Flame Photometric Detector (FPD) allows simultaneous detection of two different compound types, such as Sulfur or Phosphorus containing pesticides, in a single GC analysis, improving laboratory productivity. TheTRACE FPD gives excellent sensitivity for Sulfur and Phosphorus with the same detector gas settings, rather than individually optimized settings for each mode as was common in past detectors. This is especially useful in a screening application, such as in citrus oil extracts for use as flavor additives.
An alternative benefit is the ability to switch between methods automatically to perform a single channel analysis. An example of this is the determination of Phosphorus or Tin compounds, where the sample preparation is not compatible.
Organophosphoruspesticides and Organotin compounds can be automatically determined by different methods, but without any hardware changes necessary on the gas chromatograph...
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