The Use Of TPH Analytical Data To Estimate
Human Health Risk: Practical Approaches
Author(s)
B. Sarmiento, T. Goyanes, I. Coleto & N. De las Casas
Abstract
This paper describes the three basic approaches that have been used to estimate
potential human health risks posed by TPH contamination: the indicator
approach, the surrogate approach and a mixed version.
Differences among methods are discussed in a case study: a former industrial
area impacted with petroleum products, destined to be redeveloped for
recreational use. Three exposure pathways have been considered: hydrocarbon
vapor inhalation, ingestion and dermal contact. Firstly, only \“indicator
compounds” were evaluated. Next, the product was considered as gasoline in the
Quantitative Risk Assessment. Afterwards, simple fractionation of hydrocarbon
chains was introduced as the input parameter. Finally, the fractionation between
the aromatic and aliphatic terms of each group of hydrocarbons was considered.
Site-Specific Target Levels (SSTLs) for each pathway were calculated.
Results for different hypothesis have been evaluated from a technical and
economic point of view. Cases in which input concentration for a compound was
above soil saturation limit are also discussed.
Keywords: hydrocarbon, TPH, human health, indicator, whole product, TPH
fraction, soil saturation, SSTL.
1 Introduction
Contamination of soils and groundwater by petroleum products can pose a risk to
human health and environmental receptors. Petroleum products are complex
mixtures containing primarily hydrocarbons. The toxicological evaluation of
petroleum hydrocarbons is particularly difficult because these substances are
present in the environment containing many hundreds of individual compounds,
each with their own toxicological properties and environmental behavior. In
Keywords
hydrocarbon, TPH, human health, indicator, whole product, TPH
fraction, soil saturation, SSTL.
Related Book
Other papers in this volume
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