ENVIRSC 1C03 Lecture Notes - Lecture 23: Pesticide, Phytoplankton, Bioaccumulation
3 Sep 2018
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Lecture #23: hazardous chemicals: trends in the use of biocides. One of the largest users of pesticides is japan. Problem is the compounds can lead to many health impacts. Any organ can be affected by toxic chemicals that can lead to bodily effects. If we are exposed in certain amounts, can lead to various health effects. Compounds that stay in the environment for long periods of time. How much you need to be exposed to to see mortality. Dioxin is supertoxic (1 drop to kill) Dose is a function of the concentration and the time you are exposed to the chemical. Overtime, you can be exposed to little portions of the chemicals. Risk characterization evaluates data from dose-response assessment and exposure assessment. Mexican-americans, many of whom are agricultural workers, are more vulnerable to pesticide exposure that other groups. Some populations of insects that are affected have some level of resistant. Have a greater population of insects that are resistant.
