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OVSCC September Meeting

September 19, 2017 @ 5:00 pm - 8:00 pm
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Wednesday, September 20th
Meritage Restaurant
40 Village Square
Cincinnati, OH 45246

Visit Meritage Restaurant website

5-6 Cocktail/Social Hour
6-7 Dinner
7-8 Meeting
Speaker: Kristin Connor (P&G)
Topic: Microplastics in the Environment: Current State of Science

Abstract: An exponential growth in scientific publications regarding the environmental fate and effects of microplastics and an increase in regulatory attention is ongoing. Despite these efforts, the environmental hazard of these particles is still relatively unknown. To evaluate the hazard of microplastics within a risk assessment context, we need a way to evaluate the quality of experimental studies. A literature review was performed to assess the state of the science. Seventy-one manuscripts were identified that attempted to identify and quantify microplastic hazard concentrations. We reviewed of the focus, scope and the methods of this work to understand how this research may assist or distract from the ability of environmental risk assessors to evaluate microplastics. Here, we provide guidance to improve the reliability and relevance of ecotoxicological studies for decision-making. Overall, we found inconsistent particle preparation techniques, incomplete reporting of particle attributes (e.g. density, charge) and limited discussion on agglomeration/aggregation as major limitations within the microplastics literature. Significant data gaps in particle size, polymer type, and tested species were identified. Nine areas of for improvement were identified and will be discussed including: environmental relevance of test concentrations; provision of sufficient detail for converting particle concentrations; thorough particle description and characterization; reporting particle preparation techniques and suspension stability; analytical verification of test concentrations; consideration of environmental relevance of particle size; inclusion of appropriate controls (chemical and biological); consideration of endpoint applicability to environmental risk assessment; reporting findings accurately, without conjecture beyond experimental limits.


Date: September 19, 2017
Time: 5:00 pm - 8:00 pm
Event Category: