Motion sensitivity of flame ionization detectors
Gularte, Ronald Carl
MetadataShow full item record
A portable gas chromatograph, using a single flame ionization detector, was constructed. The unit was tested for response to surge, sway and heave accelerations up to 0.3g. Also the detector's response was studied for roll and pitch up to 25 degrees with periods ranging from 3 to 20 seconds. The effect on the detector's response of variation in hydrocarbon concentrations in the parts per million range was investigated and response increased with increasing concentration. Samples containing 1, 10, 100, 1000, and 10,000 parts per million dodecane were analyzed, and under the higher accelerations trace distortion was evident for concentrations below 10 parts per million. Stationary isothermal chromatograms of a normal alkane sample (nC6 - nC32) were compared with those obtained under the various test conditions and no detectable difference in peak area (which represented approximately 1 microgram of the particular hydrocarbon) or retention time was evident. The limits of detection for the Aerograph detector were found to be 21.8 x 10-6 mg/sec for a 30 degree roll, 29.1 x 10-6mg/sec for 20 degree pitching and 21.8 x 10-6 mg/sec for a 0.6g heave acceleration. For the range of translational and angular accelerations that might be expected on a platform at sea, it was found that medium resolution gas chromatography using a flame ionization detector can be conducted, but in the trace analysis region, trace distortion can be expected.
Submitted in partial fulfillment of the requirements for the degree of Ocean Engineer at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution May, 1972
Showing items related by title, author, creator and subject.
Pomerantz, Andrew E.; Ventura, Gregory T.; McKenna, Amy M.; Canas, Jesus A.; Auman, John; Koerner, Kyle; Curry, David; Nelson, Robert K.; Reddy, Christopher M.; Rodgers, Ryan P.; Marshall, Alan G.; Peters, Kenneth E.; Mullins, Oliver C. (2010-04-10)Hydraulic connectivity of petroleum reservoirs represents one of the biggest uncertainties for both oil production and petroleum system studies. Here, a geochemical analysis involving bulk and detailed measures of crude ...
Impact of instrument and experiment parameters on reproducibility of ultrahigh resolution ESI FT-ICR mass spectra of natural organic matter Kido Soule, Melissa C.; Longnecker, Krista; Giovannoni, Stephen J.; Kujawinski, Elizabeth B. (2010-04-09)Natural dissolved organic matter (OM) is a complex heterogeneous mixture of compounds that have defied traditional characterization using standard analytical methods. Electrospray ionization mass spectrometry, particularly ...
Characterization of dissolved organic matter in Lake Superior and its watershed using ultrahigh resolution mass spectrometry Minor, Elizabeth C.; Steinbring, Carla J.; Longnecker, Krista; Kujawinski, Elizabeth B. (2011-11-14)With the advent of ultrahigh resolution mass spectrometry, recent studies have begun to resolve molecular-level relationships between terrestrial and aquatic dissolved organic matter (DOM) in rivers, estuaries, ...