Use of Environmental Forensics In Drycleaning Investigations

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Is TCE a PCE degradation product ?TCE – Some Similarities(yellow) /Differences (white)Acid InhibitorsAcetylenic alcoholsAlcoholsAliphatic aminesAliphatic monohydric alcoholsAlkaloidsAlky HalidesAminesAzinesAzirdinesAzo-aromatic compoundsEpoxidesEssential oilsHydroxyl-aromatic compoundsNitroso compoundsOlefinsOrganic Substitute NH 4 hydroxidesOxiranePhenolsPyridinesPyrroleQuatenary Ammonium compoundsTerpenesMetal InhibitorsAlcoholsAmidesAminesAromatic hydrocarbonsComplex ethers and oxidesCyanideCyclic EthanesCyclic trimersEpoxidesEstersEthersKetonesOlefinsPeroxidesPyridinesOxazolesOxazolinesOximesSulfonesSulfoxideThiopheneAntioxidantAmidesAminesAromatic carboxylic acidsAryl stibineBoranesButylhydroxyanisolePhenolsPyridinesPyrroleThiocyanatesLight InhibitorTCEAromatic benzene nucleiBoranesEthersGuanidineHydroxyl-aromatic compoundsOrgano-metallic compounds
TCE StabilizersMetal stabilizers used with TCE include1,2-butylene oxide and epichlorohydrin.Epichlorohydrin wasdiscontinued in the1980s due to its toxicity.Accumulate in still bottomTCEresidue “muck” up to35% greater than their original compositionin TCE.
Page 1 and 2: Use of Environmental ForensicsIn Dr
Page 3 and 4: Presentation OutlinePCEWhere to sam
Page 5: Synonyms for PCEChemical namesCarbo
Page 8: PCE Applications (b)• Rubber diss
Page 11 and 12: PCE Enriched via Solvent Distillati
Page 13: Feedstock used for PCE Productionfo
Page 16 and 17: The presence of 1,1,2,2-TeCA and/or
Page 18 and 19: EPA Method 8270 - Substituted Pheno
Page 20 and 21: Where to Sample?Knowledge of Drycle
Page 22 and 23: Traditional v. Forensic SamplingTra
Page 24 and 25: Sources of Muck
Page 26 and 27: Surrogate Chemical Signature Associ
Page 28: Muck from Expansion Joint Material(
Page 31 and 32: Case StudyExpansion Joint SamplingE
Page 33 and 34: Sewer Videos - Sewer Sampling
Page 35 and 36: Analytical DecisionsUnderstand the
Page 37: PCE StabilizersAcid InhibitorsAcety
Page 41 and 42: Manufacturers of PCE for Dry Cleani
Page 43 and 44: Distinguishing Drycleaner fromTrans
Page 45 and 46: Metal Cleaning v. Dry Cleaning (b)D
Page 47 and 48: Co-mingled PCE-SeparateSources• P
Page 49 and 50: Isotopic Analysis for Source Discri
Page 51 and 52: Degradation Rate Approach
Page 53: THANK YOU

Use of Environmental Forensics In Drycleaning Investigations

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