OCR Text |
Show ) ant imony on ORE. This is in general agreement with previous CRF data which has consistently shown high in OREs for concentrated feed materials. Products of Incomplete Combustion Incineration produces low levels of PICs. The CRF routinely analyzes VOST samples for 22 organic compounds with GC/FID. For these tests at the afterburner exit, of these 22 compounds,carbon tetrachloride (POHC) was present at the highest levels (>100 ~g/dscm). Other chlorinated alkanes and alkenes were present in the 10 to 100 ~g/dscm range. Chlorobenzene (POHC) concentrations were similar to those of the common chlorinated PICs. At the scrubber exit, PIC concentrations are about one-tenth of those at the scrubber inlet, i.e., afterburner exit. Carbon tetrachloride (a POHC) levels ranged from 4.4 to 31 ~g/dscm. The highest concentrations occurred at low excess air conditions. Except for one test, chlorobenzene (the other POHC), levels ranged from 1.4 to 14 ~g/dscm and did not appear to correlate with temperature or excess air. Other PICs include methylene chloride which was present in all tests at relatively high levels (11 to 139 ~g/dscm). Other chlorinated alkanes and alkenes, hexane, benzene, and toluene were present at levels generally below 10 ~g/dscm. - All the data reported above for methylene chloride, 1,I-dichloro-ethylene, 1,1,I-trichloroethane, carbon tetrachloride, trichloroethylene, benzene, hexane, and toluene are somewhat compromised due to laboratory solvent contamination. However, since the reported results are quite consistent with past experience, they are reported here. 12 |