Ch.3. Water Quality What is WQ? Physical, chemical, biological characteristics of water Appropriateness of water properties for a given usage purpose Water usage? Drinking Other household usage (shower, gardening, laundry, cooking, etc.) Agriculture Industry Leisure Others
Ch.3. Water Quality. What is WQ? Physical, chemical, biological characteristics of water Appropriateness of water properties for a given usage purpose Water usage? Drinking Other household usage (shower, gardening, laundry, cooking, etc.) Agriculture Industry Leisure Others. - PowerPoint PPT Presentation
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Ch.3. Water Quality What is WQ?
Physical, chemical, biological characteristics of waterAppropriateness of water properties for a given usage pur-
pose
Water usage?DrinkingOther household usage (shower, gardening, laundry, cook-
ing, etc.)Agriculture IndustryLeisureOthers
WQ criteria: The levels of the constituents (includ-ing pollutants) and other parameters indicating the water quality. The criteria can be setFor inorganic parameters:
○ Anionic components: F, Cl, SO4, NO3, PO4○ Cationic components: All the metals, including heavy metals
such as Pb, Cd, As, Se, Hg, etc.○ Neutral coponents: Si, O2
From http://en.engormix.com/MA-aquaculture/articles/aquaculture-water-quality-disease-t1160/165-p0.htm
WQ standard for finfish (Australia)
Potential health effects from ingestion of waterInorganic
○ As: Skin damage; circulatory system problems; in-creased risk of cancer
○ Pb: Infants and children-delays in physical or mental development. Adults-kidney problems; high blood pressure
From http://colonelspeaks.wordpress.com/tag/mass-poisoning/
From http://serc.carleton.edu/NAGTWorkshops/health10/overview.html
From http://atlas-emergency-medicine.org.ua/ch.12.htm
Arsenic (As) poisoning
Image courtesy of Paul Traughber, M.D., Boise, Idaho.This X-ray shows white bands of lead collected in the growth plates of the knee joints of a child
Lead (Pb) poisoning
From http://www.revolutionhealth.com/articles/x-ray-of-lead-poisoning-in-a-child/zm6084
○ Cd: ‘Itai-Itai’ disease, kidney damage
From http://pollutionpictures.blogspot.com/
○ Hg: ‘Minamata’ disease, kidney damage
From http://healthandenergy.com/air_pollution_health_effects.htm /
Son With Birth Defects Due to Mercury Poisoning
○ F: Bone disease (pain and tenderness of the bones); Children may get mottled teeth.
Researchers say in some villages nearly all adults suffer skeletal fluorosis. China.
From http://ehpnet1.niehs.nih.gov/docs/1994/102-2/focus.html
From http://curezone.com/forums/fm.asp?i=919190
○ NO3, NO2: "Blue baby syndrome" in infants under six months - life threatening without immediate medical attention. Symptoms: Infant looks blue and has short-ness of breath.
From http://www.bluebabysyndrome.org/87/how-to-identify-blue-baby-syndrome/ /
Fingertips get swollen. Medically this is called as “Clubbing
From http://library.thinkquest.org/04oct/01590/pollution/culturaleutroph.jpg