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Analytical Support for Ecological / Human Health Risk Assessment Applications

Generating useful, reliable analytical data for risk assessments, particularly ones involving sediment and/or tissue sampling programs, is the most difficult task an environmental laboratory can undertake. Contaminated sediments can present a significant challenge to achieving project-specific detection limits, given the high TOC and moisture content. This can be further exacerbated by high concentrations of both target and non-target analytes. Tissue samples pose similar, but different, challenges associated with high lipid content.

These programs can often be high profile projects, and even though the samples can be the most difficult to analyze, they have the most stringent regulatory requirements in terms of detection limits and data quality. Alpha has a reputation for exceeding expectations, and we are known for a unique combination of skills that provide us with the capabilities and capacity to produce a high quality product in accordance with all applicable regulatory requirements in support of large projects on quick time-frames.

Alpha Analytical's Mansfield facility has been specifically designed, staffed and equipped to support ecological and/or human health risk assessment applications. Unlike more routine site characterization, these programs require the laboratory to place much more emphasis on sample storage, homogenization and preparation at the front end of the analytical process together with method development expertise focused on maximizing analytical sensitivity and overcoming interferences. 



Alpha Analytical offers Method 1340, In Vitro Bioaccessibility Assay for Lead in Soil. This in vitro bioaccessibility (IVBA) procedure is a validated method applicable for the risk based characterization approach of lead bioaccessibility in lead-contaminated soil. IVBA is defined in the method as the physiological solubility of the metal that may be available for absorption into the body. At this time, EPA has only validated this method for lead-contaminated soil under field conditions and not for other matrices (e.g., water, air, amended soils, dust, food, etc.).

Alpha Analytical also offers a related procedure, the “California Arsenic Bioaccessibilty (CAB) Method” for a risk based characterization approach for arsenic-contaminated soils. This procedure is similar in concept and approach to Method 1340, only it is applicable to arsenic rather than lead.


Contact Alpha Analytical today for your upcoming Sediment & Tissue analysis projects.

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