||Validation of a Method to Measure Polychlorinated Biphenyls in Natural Gas Pipelines.
Harris, Robert W. ;
Grainger, C. Fred ;
Mitchell, William J. ;
||Grainger Labs., Inc., Raleigh, NC.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Natural gas ;
Air pollution ;
Gas analysis ;
Chemical analysis ;
Chlorine organic compounds ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
NIOSH-approved, commercially-available Florisil tubes were found to quantitatively collect PCB from natural gas streams when the sampling rate is less than 600 cc/min and less than 230 liters of gas is collected. It was also found that severe skewing of the Aroclor pattern can result when gas passes through a PCB contaminated pipe. When this occurs the pattern recognition approach used for quantifying PCB in air samples will be inadequate. In this situation confirmation of PCB should be done using a second GC column and, if PCB's are confirmed, the Webb-McCall or perchlorination procedures should be utilized for sample quantitation.