Mercury in the Water A Global Problem.

Slides:

Advertisements

Similar presentations

Solid and Hazardous Waste

Advertisements

HEAVY METAL IONS. SOME METAL IONS ARE GOOD! Fe 2+, K +, Ca 2+, Mg 2+ Essential to the health of humans. May be in water but mostly get in food we eat.

1. Persistence is a measure of A.the concentration of a toxin B.the time it takes for a toxin to degrade. C.how chemically reactive a toxin is. D.how harmful.

What types of pollution exist in our water?. Pathogens Disease causing organisms such as bacteria, viruses, protozoa and parasitic worms.

Paracelsus “The dose makes the poison ”. MSDS Environmental Hazards and Human Health Chapter 17.

Harmful Effects and Emergency Response Poisoned: harm to internal organs Injuries: harm due to external irritants Hazard is the risk of harmful effects.

Food Contamination and Safety Concepts Persistent Organic Pollutants (POPs) –E.g. PCBs Heavy Metals –E.g. Mercury.

Something Fishy…Do Now

What is Bioaccumulation?

Goals  Determine which chemicals present (or potentially present) in the Lake Champlain basin would cause detrimental effects  Determine the pathways.

Missouri Department of Health and Senior Services Jeff Wenzel.

Mercury Pollution By, Nastaran Yazdi. Occurrence of Mercury in Nature:  A naturally occurring element.  Found mostly as cinnabar ore (HgS.)  Cinnabar.

Mercury and the Environment Bio Sci 2B. Mercury: The Element   Liquid at room temperature   Atomic #: 80   Atomic Mass: g   “Quicksilver”

Grade 7 Interactions and Ecosystems

Mercury Poisoning By Adam Ware. 80 Hg Mercury is element 80 on the PT A heavy metal with 80 protons in the nucleus of each atom.

Mercury Pollution Mark Bentley David Herr NSF April 2011.

Water Pollution Part 2 Mercury.

Water Pollution Mercury.

Mercury Monitoring on the Fond du Lac Reservation Joy Wiecks, Air Quality Technician Fond du Lac Band of Lake Superior Chippewa December 15, 2005 WRAP.

High concentration of mercury can cause poisoning. Can have side effects on nervous system and muscles. Symptoms: -Rashes -Numbness -Tooth loss -Tremors,

BIOACCUMULATION Chapter 2.3. Chemical Pollutants Humans have been introducing synthetic (man-made) chemicals into the environment. Some examples are:

(c) McGraw Hill Ryerson Effect of Bioaccumulation on Ecosystems Amphibians (like frogs) live on both land and in the water.  They are also sensitive.

2.3 Effect of Bioaccumulation on Ecosystems  Amphibians are valuable indicators of environmental health because they’re sensitive to chemical changes.

The Bioaccumulation of Mercury Cloze reading notes.

Mercury Laura Rogers Chemistry 12 – A Block Mrs.McLellan.

Lake Trout 4.83 Lake Trout 4.83 PCBs Background Information: PCBs are a collection of substances used to manufacture different items such as plastics and.

Effects of Bioaccumulation on Ecosystems

MERCURY IN THE ENVIRONMENT Ben Tong & Angellah Anyieni Chem. 450 Advanced Inorganic Chemistry Winona State University.

Environmental health effects and treatment of mercury exposure Presentation by Sergio M. Navarro IAP 2006, Medical Geology/Geochemistry Massachusetts.

Public Health Services A Shared Service of Cape Breton District Health Authority (CBDHA) & Guysborough Antigonish Strait Health Authority (GASHA)

River Contaminants A Practical Look at Solubility.

Melissa Reinbold Criztel Navizaga Andrew Koresko Nick Lee

Bioaccumulation and Biomagnification. Bioaccumulation This is the way materials become concentrated in the tissues of a living organism. Biomagnification.

(c) McGraw Hill Ryerson 2007 Chapter 2 Energy Flow & Nutrient Cycles 2.3 Effects of Bioaccumulation on Ecosystems p Words to Know: Bioaccumulationkeystone.

` Area VI: Pollution VIB2: Hazardous Chemicals in the Environment.

Pesticides SNC1D. Pest Pests are living organisms that are not wanted around us. Examples of pests include unwanted dandelions growing in the lawn; rodents.

Bioaccumulation and Biomagnification Tracing Pollution Through An Ecosystem.

2.3 Effect of Bioaccumulation on Ecosystems

.  Symbol: Hg  Atomic number: 80  Moderately active  Mercury reacts at about 350°C to form Mercury II oxide 2Hg(s) + O 2 (g) → 2HgO(s) A red powder.

Persistent Organic Pollutants (POPs)

Lake Trout 4.83 Lake Trout 4.83 Mercury (Hg) Background Information: Mercury is an element and it is one common form of pollution across the world. Large.

Organization of Course INTRODUCTION 1.Course overview 2.Air Toxics overview 3.HYSPLIT overview HYSPLIT Theory and Practice 4.Meteorology 5.Back Trajectories.

2.3 Effect of Bioaccumulation on Ecosystems  Amphibians are valuable indicators of environmental health because they’re sensitive to chemical changes.

Science 10 Mr. Francis 5.3 – Bioaccumulation and Biomagnification.

THE EFFECTS OF HAZARDOUS MATERIALS ON THE BODY

2.3 Effect of Bioaccumulation on Ecosystems

2.3 - Effect of Bioaccumulation on Ecosystems Amphibians (ie. frogs) live both on land and in water. They are sensitive to chemicals changes in the environment,

Harshini Wickremasinghe May 5, 2011 Bio 464. Physical/Chemical Properties Silvery, heavy, mobile, liquid phase Only liquid metal at room temp. Odorless.

Health Risk and Toxins Essential Question: how do we determine what is harmful to us?

Environmental Hazards and Human Health Chapter 17.

Toxic Chemicals. DDT ► An insecticide (kills insects)  Used during WWII to control malaria, typhus, body lice and plague. ► Still used in South America,

Assessing the impact of human activities on Ecosystems 2 -Water Quality Lesson 12 September 13th, 2010.

Contaminated Fish: The Mercury Connection

Major Contaminants in Wisconsin Fish

Bioaccumulation.

Bioaccumulation and Biomagnification

2.3 Effect of Bioaccumulation on Ecosystems

2.3 Effect of Bioaccumulation on Ecosystems

2.3 Effect of Bioaccumulation on Ecosystems

Topic 4 How organisms react.

Biomagnification When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir.

2.3 Effect of Bioaccumulation on Ecosystems

Effect of Bioaccumulation on Ecosystems

Back in 1987 there was some concern over the health of women in an industrial neighbourhood of Quebec City.

What is bioaccumulation?

Science 9 Unit 4: Ecology Lesson 3: Food Chains/Web & Bioaccumulation/Biomagnification.

FLOW OF ENERGY AND NUTRIENTS WITHIN ECOSYSTEMS

Bioaccumulation And Biomagnification.

Heavy Metal Pollution.

Presentation transcript:

Mercury in the Water A Global Problem

What is Mercury? A liquid element. A potent neurotoxin

How do you Get exposed to Hg? Inhaling vaporized elemental Hg Eating fish contaminated with methyl mercury (CH3Hg).

Absorbed in tissues of fish, birds and people. What is Methyl Mercury? Highly toxic form. Absorbed in tissues of fish, birds and people.

Hg is Fat Soluble: stored in fat; remains in body for a long time.

Where is Hg in Your Home?

What are the Natural Sources of Hg? Ocean Volatization

What are Human Sources of Hg? Waste Incineration Electric arc furnaces (Recyling)

How does Hg Get Into the H2O? Hg travels for miles in air  rain deposits it on land/ocean. Bacteria take Hg+2  to methyl mercury (CH3Hg).

What is Biomagnification/ Bioaccumulation? Increase in concentration of fat soluble chems in orgs at higher levels of the food chain/web.

Bioaccumulation Video Clip

Who’s at Risk?

What Type of Fish Have A Lot of Hg? At Risk What Type of Fish Have A Lot of Hg? Swordfish Shark King Mackerel

What Does Hg Do to Your Body? Dyslexia, Impotence/ menstrual probs

How do We Reduce Exposure to Hg? Lower amount of emissions of Hg from coal burning plants. Tax each unit of Hg emitted by coal burning plants and incinerators.

Prevention Remove Hg from coal before it is burned  physical density separation (coal washing). Convert coal to a liquid or gaseous fuel (coal gasification). Phase out coal burning  natural gas, hydroelectricity Phase out incinerators Phase out use of Hg in electrical switches. Ban use of Hg in dry cell batteries.

Requires cautionary labels on household products What is FHSA? Requires cautionary labels on household products

Polychlorinated biphenyls Insoluble in water, soluble in fats.. PCB’s Polychlorinated biphenyls Insoluble in water, soluble in fats..

Used as a dielectric field in transformers and capacitors.

Bioaccumulates, just like Hg or Pb Small penises anyone? Gastric disorders, liver and kidney damage, birth defects, skin lesions.

Lead Heavy metal used in old pipes, “leaded gas”, and old paint.

Lead Neurotoxin that causes learning and behavioral disorders Acute vs chronic poisoning Symptoms: loss of apetite, lethargy, memory loss, insomnia, hearing loss

dense metaphyseal bands on distal femurs, proximal tibias and proximal fibulas