..
-
Upload
mahendra-institute-of-engineering-and-technology -
Category
Education
-
view
138 -
download
0
description
Transcript of ..
FIGURE 5- 1Exposure routes for chemical agents in hazardous waste.
FIGURE 5-2
Overview of absorption, distribution, storage, transformation, and elimination of a toxic substance in the human body.
FIGURE 5-3Types of doses for dermal contact with contaminated soil.
FIGURE 5-4Correlation of atmospheric benzene concentrations with urinary phenol levels in workers in a rubber coating plant.
FIGURE 5-5
Effect of dose fractionalization on accumulation of a toxic compound.
FIGURE 5-6
Sequence of events leading up to a toxic response.
FIGURE 5-7
Representative cellular targets for toxic action.
FIGURE 5-8
Lock-and-key model for toxic action.
FIGURE 5-9Example of compounds with identical molecular formula but different toxicity.
FIGURE 5-10
Inhibition of enzyme acetylcholinesterase (AChE) by organophosphorus.
FIGURE 5-11
Dose-response relationship (dose versus mortality).
FIGURE 5-12
Dose-response relationship for erythrocyte protoporphyrin (EP) in blood as a function of the blood lead level in subpopulations.
FIGURE 5-13
Effect of EGM on the relative organ weights of testes and prostate.
FIGURE 5-14
Health effects from breathing and/or ingesting lead.
FIGURE 5-15
Health effects from breathing benzene.
FIGURE 5-16
Adequacy of human exposure data on health effects of benzene.
FIGURE 5-17
Adequacy of animal test data on health effects of benzene.
FIGURE 5-18
Location of NOAEL and LOAEL doses with respect to the threshold on a typical dose-response curve.
FIGURE 5-19
Three stages in carcinogenesis.
FIGURE 5-20
Metabolic activation of benzo(a)pyrene.
FIGURE 5-21
Example of a point mutation through base pair substitution.
FIGURE 5-22
2,3,7,8-tetrachlorodibenzo(p)dioxin.
FIGURE 5-23
Hypothetical dose-response curve for a typical complete carcinogen.
FIGURE 5-24
Extrapolation of dose-response relationship for liver tumors induced by 2- cetylaminofluorene in the low-dose range.
FIGURE 5-25
Toxicological/ecological relevance and time scale of toxic responses for levels of biological organization.
FIGURE 5-26
Idealized plot of dose-responserelationship.
FIGURE 5-27
Graphical interpolation of time- ependent LC50values for sodium selenite.
FIGURE 5-28
Biomagnification of pesticides in aquatic food chains.
FIGURE 5-29
Possible movement and fate of a contaminant after absorption
into the bloodstream of fish.