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Fingerprint Case Studies Available...

Customer uses Sitelab to fingerprint GRO and DRO in oils from a large LNAPL plume site...

 
 

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Sitelab's PAH fingerprinting analysis is fast & easy!

     This time saving feature allows you to test samples for both PAH fractions at once, by rotating the optics from Slot A to Slot D and re-analyzing the sample. The ratios, or proportions, of a sample’s Total PAH and Target PAH results will vary depending on how old and what type of petroleum contamination is present.

  

     Although Sitelab’s UVF technology cannot differentiate one compound from another, as they often co-fluoresce on top of each other, the UVF-3100 analyzer produces ‘total’ PAH concentrations.  Sitelab’s Calibration Kit, which contains a mixture of the same PAH compounds reported by GC/MS Method 8270, fluoresces the same when measured on the Slot A or D optics, but will detect different groups of PAHs when testing contaminated samples.

     The Total PAHs measured on the UVF-3100’s Slot A Optics account for all the PAHs in the C10-C22 range, also called Extractable Petroleum Hydrocarbons (EPH) used by regulatory agencies for measuring the more toxic aromatic hydrocarbon fraction found in TPH.  The Target PAHs measured on the Slot D Optics fluoresce lower and correlate more directly to the sum of the PAHs reported by EPA Method 8270.

 

Advanced fingerprinting applications testing GRO, EPH and PAHs...

     The Target PAH optics are an integral part of Sitelab’s fluorescence fingerprinting method for hydrocarbon identification.  When used with the UVF-3100’s GRO analysis on the Slot B optics, requiring a separate calibration for testing the volatile C6-C10 BTEX hydrocarbon fraction, the fluorescence signatures exhibited provides additional forensic data useful for delineating sites having unknown petroleum sources.

 

   

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