PRIMA Environmental, Inc.

In Vitro Bioaccessibility (IVBA) / Physiologically Based Extraction Tests

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PRIMA performs in vitro bioaccessibility tests for lead according to EPA Standard Operating Procedure 9200.2-86. This method uses simulated stomach conditions to measure the amount of lead that may be leached from ingested soil. Soil may be elevated in lead, but if the lead is not bioavailable, then the soil may pose little risk to human health. For more information about IVBA testing, visit EPA’s IVBA FAQ page.

PRIMA also performs physiologically based extraction tests (PBETs), which assess leachability of metals from ingested soil under simulated stomach and intestinal conditions. The method was developed by Ruby et al (Environ. Sci. Technol., 1996, 30, 422-430).

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