Topic: Sources of Toxicants
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Answers to Common Questions
What are the sources of toxicity values used on this site?
In 2003, EPA's Superfund program revised its hierarchy of human health toxicity values, providing three tiers of toxicity values ( http://www.epa.gov/oswer/riskassessment/pdf/hhmemo.pdf ). Three tier 3 sources were identified in that guidan... Read More »
Source: http://www.epa.gov/reg3hscd/risk/human/rb-concentration_table/faq...
What one food source of Vitamin A might pose a toxicity issue?
Food sources don't pose Vitamin A toxicity issues. While too much vitamin A from supplements can be dangerous, beta-carotene (the natural form found in foods) doesn't pose such a risk. Additionally, the relative amount of Vitamin A found in... Read More »
Source: http://wiki.answers.com/Q/What+is+Vitamin+A+toxicity+most+likely+...
What data sources were used for the toxicity values in the RSEI m...
The following data sources were used, in order of preference: EPA's Integrated Risk Information System (IRIS) EPA Office of Pesticide Programs' Toxicity Tracking Reports (OPP); Agency for Toxic Substances and Disease Registry final, publish... Read More »
Source: http://www.epa.gov/oppt/rsei/pubs/faqs.html
More Common Questions
Answers to Other Common Questions
You gave us no list from which to choose. Almost anything can be toxic if you take enough. The correct exam question is B: analgesics
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Source: http://wiki.answers.com/Q/Which_of_the_following_are_drugs_that_a...
Afi 10-20
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Source: http://wiki.answers.com/Q/Which_is_not_a_source_of_information_ab...
Afi 10-20
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Source: http://wiki.answers.com/Q/Which_is_a_source_of_information_about_...
paint (Pb : lead), Nickernuts (As : arsenic), and shellfish and fish (Hg :organic mercury) Nickernuts are smooth, shiny seeds that are used to play mancala games such as oware in the Caribbean. They are produced by the sprawling thorny coas...
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Source: http://answers.yahoo.com/question/index?qid=20071211230725AAnxM9O
EPA has taken aggressive action to reduce benzene emissions from mobile sources. EPA estimates that existing programs will result in an about a 65 percent reduction in emissions of benzene from highway mobile sources between 1999 and 2030, ...
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Source: http://www.epa.gov/ttn/atw/nata2002/natafaq.html
The answer is B) companies that produce dangerous chemicals are required by law to provide detailed risk assesment and analysis of the chemicals they sell. They usually present this data in the form of an MSDS. The MSDS for a dangerous chem...
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Source: http://answers.yahoo.com/question/index?qid=20110611085336AA1Vzko
Adverse effects have only been documented from vitamin B6 supplements and never from food source. It is very rare to get an overdose of Vitamin B6 from food intake, it can occur in people whose kidneys do not excrete the vitamin and its met...
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Source: http://answers.yahoo.com/question/index?qid=20101016174808AADyoLT
