Screening Approach for Principal Organic Hazardous Constituents and Products of Incomplete Combustion

Johnson, Larry; Midgett, M.R.; James, R.H.; Thomason, M.M.; Manier, M. Lisa

doi:10.1080/08940630.1989.10466557

Cited by 3 publications

(3 citation statements)

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“…A previous publication discussed screening survey strategies for organic compounds in hazardous waste combustor emissions. Several concepts were introduced which had evolved from earlier research cited therein.…”

Section: Concepts and Strategiesmentioning

confidence: 99%

Determination of Total Organic Emissions from Hazardous Waste Combustors

Johnson

1996

Anal. Chem.

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U.S. Environmental Protection Agency risk assessment guidance currently under development for evaluation of permitting information from hazardous waste combustors requires a quantity referred to as "total organic carbon". The risk guidance does not define this term precisely, nor does it explain how it should be determined. This paper discusses basic principles of sampling and analysis of stack emissions for "total organics", best currently available technology, and the status of two ongoing projects designed to provide guidance and to improve analysis procedures. Determination of total organics from stack emissions is much more complicated than might be expected, and more published guidance is badly needed. The best scheme available for analysis of stack emissions for total organics to be used in material balance style "bookkeeping" includes determination of organics content in three boiling point ranges: <100 °C, 100 °C-300 °C, and >300 °C. Total organic carbon is not a useful quantity, since it includes soot, polymeric material, and other nonextractable organic materials. Total organics has been found to be an imperfect but less misleading term. Various calculations can be made and conclusions can be drawn on the basis of the contents of the individual boiling point ranges, as determined by the recommended methodology. The analysis strategy is complicated and difficult, and it contains limitations and compromises. It does not, however, require exotic analysis instrumentation, nor is it very expensive. Each of these facets of the methodology is discussed in this paper, and a status report is provided on development of a guidance document and a research project intended to produce improved methods.

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Section: Concepts and Strategiesmentioning

confidence: 99%

Determination of Total Organic Emissions from Hazardous Waste Combustors

Johnson

1996

Anal. Chem.

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“…A second alternative approach uses the criteria for the most potent organic compounds identified in the stack emissions to evaluate the risk associated with stack emissions (8). Using an iterative procedure, the criterion for the most potent toxicant identified in the stack emission is first employed to evaluate the risk associated with the emissions ofall hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

“…Given the difficulties of evaluating the emissions of hazardous substances using conventional risk assessment methodology, several alternative approaches have been advanced as a method to screen out certain facilities that do not appear to pose a significant risk to public health (7)(8)(9). One approach employs a generic criterion to screen out facilities with relatively low levels of noncarcinogenic stack emissions (7).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Volatile Organic Emissions from Hazardous Waste Incinerators

Sedman¹,

Esparza²

1991

Environmental Health Perspectives

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Conventional methods of risk assessment typically employed to evaluate the impact of hazardous waste incinerators on public health must rely on somewhat speculative emissions estimates or on complicated and expensive sampling and analytical m ods. The limited amount ofticological information concerning many of the compounds detected in stack emissions also complicates the evaluation ofthe public health impacts of these facilities. An alternative approach aimed at evaluatingthe public health impacts associated with volatile orgnic stackem ois pr ed that rdies on ascreening criterion to evaluate total stack hydrocarbon emissions. If the concentration ofhydrocarbons in ambient air is below the screening criterion, volatile emissions from the incinerator are judged not to pose a significant threat to public health.Both the screening criterion and a conventional method of risk assessment were employed to evWaluate the emissions from 20 incinerators. Use of the screening criterion always yielded a substantiagy greater estimate of risk than that derived by the conventional method. Since the use ofthe screening criterion always yielded estimates of risk that were greater than that detennined by conventional methods and nmering total bydrocarbon enimions is a relatively simple analytical procedure, the use ofthe screening criterion would appear to filitate the evaluation ofoperating hazardous waste incineratos

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Products of incomplete combustion (Ox, COx, HOx, NOx, SOx ROx, MOx and POx)

Daniels

1989

Journal of Hazardous Materials

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Screening Approach for Principal Organic Hazardous Constituents and Products of Incomplete Combustion

Cited by 3 publications

References 0 publications

Determination of Total Organic Emissions from Hazardous Waste Combustors

Determination of Total Organic Emissions from Hazardous Waste Combustors

Evaluation of Volatile Organic Emissions from Hazardous Waste Incinerators

Products of incomplete combustion (Ox, COx, HOx, NOx, SOx ROx, MOx and POx)

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