Preview

Environmental Toxicology

Good Essays
Open Document
Open Document
1471 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Environmental Toxicology
Environmental Toxicology
ENV/410
November 3, 2014
Environmental Toxicology
Every day, each and every individual is exposed to some form of toxicity. This could be in the form of toxic substances, toxic chemicals, or even toxic pollutants in the atmosphere. There are many materials within communities that could prove toxic and hazardous. Many of these substances pose great health concerns. Toxic chemical exposure in the United States can prove burdensome; especially in low-income communities. Most communities are exposed to toxicity through consumer products, pollution from industrial plants, as well as chemical plants. Not only is chemical contamination real, but it is also common. Contaminants in the environment can significantly and negatively impact the environment as well as humanity. The subject of this paper is to identify environmental effects of contaminants, to explain toxicokinetics and toxicodynamics, and to explain the primary routes and pathways of exposure for contaminants. The author will also discuss the principal mechanisms in moving contaminants across the cell membrane and the phases of biotransformation.
Environmental Effects of Contaminants
On the planet today, there are a variety of chemicals that can negatively affect or contaminate the water, land, air, and even human health. This is because, throughout the years, humanity has introduced a significant amount of chemical substances into the environment. These chemical substances in the environment can cause serious harm. According to Planet Agenda (2014), “Chemicals enter air as emissions and water as effluent. Industrial and motor vehicle emissions of nitrogen and sulfur oxides cause acid rain, which poisons fish and other aquatic organisms”. Harmful contaminants in the environment also affect the soil, making it incapable of supporting plants. Carbon dioxide is a pollutant that leads to more than the usual amount of greenhouse gases in the atmosphere. This eventually results in



References: Harmful chemicals in our environment. (2014). Planet Agenda. Retrieved from http://www.planetagenda.com/chemicals.htm Monosson, E. (2012). Biotransformation. Encyclopedia of Earth. Retrieved from http://www.eoearth.org/view/article/150674/ Philip, R. B. (2013). Ecosystems and human health: Toxicology and environmental hazards (3rd ed.). Boca Raton, FL: Taylor & Francis Group. Toxicology Tutor II-Toxicokinetics. (2014). National Library of Medicine: National Institute of Health. Retrieved from http://sis.nlm.nih.gov/enviro/toxtutor/Tox2/index.html

You May Also Find These Documents Helpful

  • Powerful Essays

    Schettler, T. (2001). Toxic threats to neurologic development of children. Environmental Health Perspective 109(6). P. 813–6 Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1240616/pdf/ehp109s-000813.pdf…

    • 2780 Words
    • 12 Pages
    Powerful Essays
  • Powerful Essays

    Ely Mine

    • 1764 Words
    • 14 Pages

    Wright, D. A., & Welbourn, P. (2002). Environmental Toxicology (Rev Ed.). Cambridge, MA: Cambridge University Press.…

    • 1764 Words
    • 14 Pages
    Powerful Essays
  • Satisfactory Essays

    Day to day the land becomes further polluted by humans. The well-being of the environment is threatened by these pollutants. These pollutants include DDTs, PCBs, and organophosphate pesticides. DDT was once thought of as a very effective chemical. It was…

    • 296 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Watershed Case Study Essay

    • 2010 Words
    • 9 Pages

    It is predicted that the concentration of CO2 will triple to what the pre-industrial average of 280 ppm. Currently, according to the CO2 detector on Mauna Loa Observatory is registering 398.78 ppm. Kaster (1998) states that,” Of the 7.1 gigatons of carbon released each year about 3.3 Gt C accumulates in the atmosphere.” An increase of air pollutants is a result of continued use of fossil fuels. Air pollutants such as carbon monoxide, nitrogen oxides, sulfur oxides and hydrocarbons are produced as fossil fuels are used (Union of Concerned Scientist, n. d.). Carbon monoxide causes headaches and aggravates people with heart disease. Nitrogen dioxide and nitric oxides create smog, a yellowish-brown “cloud” layer that settles on the ground. And these substances irritate lungs causing issues like bronchitis and pneumonia. Sulfur oxides and nitrogen oxides are the primary components of acid rain and snow that affect plants and buildings. Hydrocarbons are another pollutant made from burning fossil fuels. Smog is also tropospheric ozone, which affects lungs, and crop yields. In addition, fossil fuels produce small particles that irritate the lungs. Pollution also impacts water and land. Oil spills leave shorelines uninhabitable for animals. Coal mining adds water pollutants by adding sulfur…

    • 2010 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    Evaluate the detrimental effects of chemical and biological contaminates on human health and the environment.…

    • 1323 Words
    • 5 Pages
    Satisfactory Essays
  • Best Essays

    env410 syllabus

    • 2197 Words
    • 9 Pages

    Connell, D., Lam, P., Richardson, B., & Wu, R. (1999). Introduction to ecotoxicology. Malden, MA: Blackwell.…

    • 2197 Words
    • 9 Pages
    Best Essays
  • Best Essays

    Autism Technical Report

    • 4034 Words
    • 17 Pages

    of cancers and neurological disorders as a result of polluting our air, soil, water and food supply.…

    • 4034 Words
    • 17 Pages
    Best Essays
  • Good Essays

    In Ch 4 of Silent Spring, Carson brings about the fact that the most essential natural resource in the world, water, is being contaminated. With every spray and use of the pesticides and human-made chemicals, persistent as they are, the resulting effects spread throughout ecosystems. Bioaccumulation occurs through the levels of the food chain(biological magnification), microorganisms and fish are exposed to the chemicals that render the water polluted, fish are eaten by birds and other aquatic life and become sick as they are further exposed to the toxicants. Seeping through the ground, the synthetic chemicals escaped detection through the methods used then. They often mixed together to form more toxic and poisons affecting life around and…

    • 342 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Endocrine Disruptors

    • 1791 Words
    • 8 Pages

    Evidence provided to support these claims of human and wildlife harm is largely from laboratory studies in which large doses are fed to test animals, usually rats or mice, and field studies of wildlife species that have been exposed to the chemicals mentioned above. In laboratory studies, high doses are required to give weak hormone activity. These doses are not likely to be encountered in the environment. However the process of bioaccumulation can result in top-level predators such as humans to have contaminants at levels many million times greater than the environmental background levels (Guilette 1994). In field studies, toxicity caused by endocrine disruption has been associated with the presence of certain pollutants. Findings from such studies include: reproductive disruption in starfish due to PCBs, bird eggshell thinning due to DDT, reproductive failure in mink, small penises in alligators due to DDT and dicofol (Guillette 1994, Colburn et al 1996). In addition, a variety of reproductive problems in many other species are claimed to be associated with environmental contamination although the specific causative agents have not been determined. One recent discovery that…

    • 1791 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    |Pollution |Contaminants coming into the environment causing the air, water and soil to become harmful|…

    • 569 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Co2 Research Paper

    • 118 Words
    • 1 Page

    Over the past years, carbon dioxide has been at the center of debates in regards of the negative effects it has on the environment. CO2 is considered as a pollutant, it has the ability to turn fresh air into toxic air. Industries and automobiles are two of the major entities known to cause CO2 pollution. Automobiles emit CO2 by burning fossil foil for energy. The most frequent utilized fossil fuel worldwide are coal and oil. “Over 90 percent of the fuel used for transportation is petroleum based, which includes gasoline and diesel” (EPA). In addition to being a pollutant, CO2 is considered as a greenhouse gas. This means that it has high tendency to cause on climate change.…

    • 118 Words
    • 1 Page
    Good Essays
  • Good Essays

    Forensic Toxicology

    • 629 Words
    • 3 Pages

    Forensic toxicology was one of the greatest additions to the forensic science world. The first ever recorded start of forensic toxicology was in the nineteenth century. If it had not been for the forensic toxicology invention there would have been a lot of homicides ruled as natural deaths. For example their was a case when a man who was really good friends with a wealthy elderly couple. When he found out they had added him to the will he tried to kill them both by poisoning them. Unfortunately only the husband had died. Once he died his death was ruled by natural causes of a heart attack. Soon after his death his wife all of a sudden got sick. So she went to the doctor and founded out that she was being feed rat poison. So forensics got curious about did her husband really died of a heart attack. After doing an autopsying her husband ashes the found so rat poisoning. In the end his death was ruled a homicide and the man went to jail for attempted murder and murder.…

    • 629 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Many people are unaware of the daily negative impact they have on the environment. For example, the majority of the human population uses basic household products which contain toxic chemicals in their ingredients. It is most common that when people dispose of products they will either dispose of them in the trash or pour them down the drain of their sink. Unfortunately, “two-thirds of aquatic life is considered to be an endangered species because of improperly disposed chemicals and other waste…those chemicals are washed into rivers, which feeds waterfalls and then goes into the ocean” (Espinoza, 2014). This careless disposal of household toxic wastes is harming the ecosystem and contaminating water quality in a variety of ways.…

    • 848 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Is our environment being compromised from excessive use of different chemicals? This is the question that has been the ground for major debate for many years, is our advancements causing global warming? When debating global warming the first thing to consider is what the cause of global warming is, and the answer to this basic question is greenhouse gases. Greenhouse gases are natural gases such as CO2, Nitrous Oxide or Methane and are created in one of two ways. The first way is, through natural cycles, for instance, CO2 is released through animal respiration or plant photosynthesis. The alternative greenhouse gas production comes from man’s use of different fuels and products; this can lead to anthropogenic climate changes.…

    • 1134 Words
    • 5 Pages
    Better Essays
  • Good Essays

    In the fourth chapter, Carson talks about how water is one of our most important natural resources but we keep contaminating it with pollutants. She states that the pollutants come in many forms such as radioactive waste from laboratories, domestic waste from cities, chemical waste from factories, and fallout from nuclear explosions and chemical sprays. She points out that some chemicals are purposely added to water to try to “destroy plants, insect larvae, or undesired fishes (pg. 40).” She states that some pollutants can travel through the soil and into groundwater, which she describes as one of the most disturbing water pollutants as all water on Earth was once groundwater. She states that pollution of groundwater is essentially pollution of the entire Earth. In the fifth chapter, Carson talks about how chemicals affect soil. The pesticides seep into the soil, then travel into plants, which humans and other animals later eat. Carson points out that some of the insecticides that are used to kill pesky insects can also kill beneficial insects who have the essential function of breaking down organic matter (pg. 56). It can also prevent necessary fungi from forming at the roots of trees--fungi that helps the tree extract nutrients from the soil. In one study, the use of many pesticides prevented nitrogen-fixing bacteria from growing at the roots of vegetable plants (pg. 56-57). A group of specialists from the Syracruse University stated that “a few false moves on the part of man may result in destruction of soil productivity and the arthropods may well take over (pg.…

    • 1226 Words
    • 5 Pages
    Good Essays