Exam (elaborations)
HAZWOPER 40 - Lesson 3 - Toxicology
- Institution
- HAZWOPER 40 - Lesson 3 - Toxicology
HAZWOPER 40 - Lesson 3 - Toxicology
[Show more]
Content preview
HAZWOPER 40 - Lesson 3 -Toxicology
Chemicals in combination can produce different biological responses than
the responses seen when exposure is to one chemical alone.
True
False - -True
-________ is the most common route of exposure leading to a toxic dose in
the work environment
Injection
Ingestion
Inhalation
Eye/Skin contact - -
-LD 50 of 25 mg/m3 means that a concentration of 25 mg/m3 of a certain
substance indicates:
50 people out of a group of 80 exposed to a concentration 25 mg/m3 of a
substance were shown to have experienced a fatal dose.
50% of the concentration of a substance cause fatality in those be exposed.
A concentration of 25 mg/m3 of a substance is shown to have been fatal to
50 percent of a test group of animals.
LD 50 is a fictitious term and does not indicate anything. - -A concentration
of 25 mg/m3 of a substance is shown to have been fatal to 50 percent of a
test group of animals.
-Factors affecting response to chemical exposure include:
Toxicity
Route of exposure
Chemical dose
All of the above - -All of the above
-________ provide most of what we know about the dangerous effects of toxic
substances.
Epidemiological studies
Animal studies
Estimation studies
, Actual exposures to a chemical in the workplace - -Epidemiological studies
Animal studies
-Example of chemical ________ are carbon monoxide and hydrogen cyanide.
Hepatoxins
Hematoxins
Asphyxiants
Nephrotoxins - -Asphyxiants
-The ACGIH publication: ________ for Chemical Substances and Physical
Agents, OSHA standard 29 CFR part 1910.1000, and other standards
reference identify substances that can be readily absorbed through the skin,
mucous membranes, and/or eyes by either airborne exposures or direct
contact with a liquid.
Threshold Limit Values
HAZCOM
Right-to-know
SDS - -Threshold Limit Values
-Polyurethane foam, when burnt, gives off:
Sulfuric acid
Cyanide gas
Ethane
Phosphine - -Cyanide gas
-Animal studies provide most of what we know about the dangerous effects
of toxic substances. Humans may react differently than animals exposed to
toxic materials.
False
True - -True
-A(n) ________ is the airborne concentration of a material to which nearly all
individuals may be repeatedly expose without adverse health effects.
Chemical exposure
Sensitizer threshold
Exposure limit
Irritant level - -Exposure limit
-When a chemical with no known toxic effects acts together with a known
toxic substance to make the combined toxic substance even more potent,
this is called ________ interaction.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Victorious23. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.59. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73243 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now