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Mercury in the EnvironmentPattern and Process$
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Michael Bank

Print publication date: 2012

Print ISBN-13: 9780520271630

Published to California Scholarship Online: September 2012

DOI: 10.1525/california/9780520271630.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 18 September 2021

Risk Evaluation of Mercury Pollution

Risk Evaluation of Mercury Pollution

Chapter:
(p.239) Risk Evaluation of Mercury Pollution
Source:
Mercury in the Environment
Author(s):

Joanna Burger

Michael Gochfeld

Publisher:
University of California Press
DOI:10.1525/california/9780520271630.003.0012

Risk assessment is a method of evaluating harm from a stressor, such as mercury. Human risk assessment involves hazard identification, dose-response assessment, exposure assessment, and risk characterization. Ecological risk assessment includes problem formulation, data acquisition and monitoring, and risk management. Both involve standardized paradigms, feedback loops, identification of data gaps, stakeholder inclusion, and environmental justice considerations. Methylmercury, the most toxic form, biomagnifies up the food chain. Risk evaluations include biomarkers, bioindicators, no observed or lowest observed adverse effect levels, benchmark doses, ecological screening quotients, and hazard quotients. Comparison values include minimum risk levels (ATSDR 0.3 μg/kg/day), reference doses (EPA 0.1 μg/kg/day), screening levels, and total maximum daily loads. Action levels or guidance include 0.3 μg/g (EPA fresh water quality), and 1 μg/g (U.S. FDA Action Level).

Keywords:   risk assessment, risk evaluation, risk paradigms, stakeholder involvement, hazard identification, dose-response, exposure assessment, risk characterization, risk management, reference doses and action levels

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