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See all Premium member Presentation Transcript The Phosphorus Cycle: The Phosphorus Cycle Masta B Yoo, Devin Kim, Drew Li, Justin Yun, Raymond Kim Basic Chemistry: Basic Chemistry Essential element of life Phosphorus is a Group 15 (5A) element Symbol: P Atomic number: 15 Atomic mass: 30.974 Color: colorless/ red/ silvery white Basic Chemistry continued: Basic Chemistry continued Nonmetal Density: 1823 kg/m3 Atomic radius: 100 pm Solid Melting Point: 317.3 K Boiling Point: 550 K Basic Chemistry continued: Basic Chemistry continued Key ingredient to plants fertilizers In nature, Phosphorus exists in form of PhosphateBasic Chemistry, cont.: Basic Chemistry, cont. Formulas of rocks containing phosphate are fluoroapatite (3Ca3(PO4)2.CaF2), chloroapaptite, (3Ca3(PO4)2.CaCl2), and hydroxyapatite (3Ca3(PO4)2.Ca(OH)2) Description of Phosphorus: Description of Phosphorus Most common form of phosphorus is red and white. Both are tetrahedral groups of four atoms. White phosphorus burns on contact with air and can change into red phosphorus when exposed to light or heat. Description of Phosphorus Cont.: Description of Phosphorus Cont. White phosphorus has two modifications. Ordinary phosphorus is waxy white solid. When pure it is colorless and transparent.Description, Cont.: Description, Cont. Pure phosphorus is insoluble in water but soluble in carbon disulphide Catches fire spontaneously in air. Background: Background Very poisonous Never found in free nature Essential ingredient of all cell protoplasm, nervous tissue, and bones Most commonly found as phosphates Part of DNA materials and energy distributionUses of Phosphorus: Uses of Phosphorus Used to make waterproof matches, pyrotechnics, smoke screens, tracer bullets, and incendiary shells. Used in fertilizer Used to produce special glasses, for example sodium lampsUses, continued: Uses, continued Calcium Phosphate is used to create fine Chinaware Monocalcium Phosphate used to make baking powder Used in making steel, and Phosphor Bronze Na3PO4 is used as a cleaning agent, water softener, and also prevents corrosion in pipesHazards and Risks: Hazards and Risks Severely toxic White form is more toxic than red form Chronic poisoning leads to necrosis of jaw (phossy-jaw) Phosphate pollution comes from detergents, insecticides, and fertilizers Inorganic phosphorus is harmlessBackground: Background The phosphorus cycle does not have a gas phase, but small amounts of phosphoric acid rise into the atmosphere, contributing to acidic precipitation. Background: Background The water, carbon, and sulfur cycles all include at least one phase in which the element is in its gaseous state. The largest reservoir of phosphorus is in sedimentary rock.The Cycle: The CycleDescription of Cycle: Description of Cycle Simplest of the cycles Phosphorus has only one form – phosphate Always part of an organism, dissolved in water, or in the form of rockDescription of Cycle: Description of Cycle Phosphorus enters environment from rocks or deposits Apatite is the phosphate rock where phosphate is available Weathering and erosion releases phosphate ions that are soluble in waterDescription, cont.: Description, cont. Phosphate then acts as fertilizers or nutrients for land plants It gets incorporated into molecules essential for life like ATP, adenosine triphosphate – this is important in storage and use of energy Description, cont.: Description, cont. Phosphate is in backbone of DNA and RNA When animals and plants die, phosphates will return to the soils or oceans again during decayDescription, cont.: Description, cont. Phosphorus cycles through plants and animals much faster than it does through rocks and sediments.. A lot of phosphate goes into the water from erosion and leaching Water plants use this phosphate as nutrientsDescription, cont.: Description, cont. Phosphate is the limiting agent in growth of plants and algae If there is a lack of phosphate, plants grow slowly or are stunted If too much, excess growth may occurDescription, cont.: Description, cont. Phosphate in water is precipitated from water as ion phosphate (insoluble) Phosphate in shallow sediment may be recycled into water In deep sediment in water, it is available as part of as part of rock formations for cycle to repeatDescription, cont.: Description, cont. After that, phosphorus will end up in sediments or rock formations again, remaining there for millions of years. Eventually, phosphorus is released again through weathering and the cycle starts over.Human Influences on Cycle: Human Influences on Cycle Human influences on phosphate cycle mostly comes from introduction & use of commercial synthetic fertilizers. Phosphate obtained by mining at certain deposits of calcium phosphate called apatite. Influences cont.: Influences cont. Phosphate rock and sulfuric acid are combined to make a fertilizer called “super phosphate.” There are many negative effects of using this fertilizer.Influences cont.: Influences cont. A lot of the fertilizer is lost through the water run-off because plants aren’t able to use up all of it. Eventually the wasted phosphate in the water is precipitated as it settles at the bottom of the body of water.Influences cont.: Influences cont. In some lakes & ponds the phosphate can be recycled as a problem nutrient. Other sources of phosphate are in out flows from local sewage treatment plans. Interesting Facts: Interesting Facts Originally, phosphorus was extracted from urine. Highly energy intensive. Gr. phosphoros, meaning “light bearer”Facts, cont.: Facts, cont. In 1669, German alchemist Henning Brand discovered phosphorus from a preparation from urine. The only correct spelling of the element is phosphorus. There does exist a word phosphorous, but it is the adjectival form for the smaller valencyBibliography: Bibliography “Nutrient Cycling in Ecosystems.” http://home.earthlink.net/~dayvdanls/ecosys4.htm 17 September 2004 “Phosphorus.” http://pearl1.lanl.gov/periodic/elements/15.html 17 September 2004Bibliography cont.: Bibliography cont. “Web-Elements.” http://www.webelements.com/webelements/elements/text/P/key.html 17 September 2004 http://en.wikipedia.org/wiki/Phosphorus 17 September 2004 “Virtual Chembook.” http://www.elmhurst.edu/~chm/vchembook/308phosphorus.html 17 September 2004 You do not have the permission to view this presentation. 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1 Phosphorus Cycle Rainero Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 6909 Category: Education License: All Rights Reserved Like it (7) Dislike it (0) Added: February 07, 2008 This Presentation is Public Favorites: 3 Presentation Description No description available. Comments Posting comment... By: vosoogh (3 month(s) ago) May i please have a copy of your power point presentation? hoping for your very kind response.I need it tonight!Thanks, and send it at: ali.vosoogh@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: MAHAKALKAR (3 month(s) ago) VERY GOOD PRESENTATION PLZ SEND ME Saving..... Post Reply Close Saving..... Edit Comment Close By: dinglasa_marlito (7 month(s) ago) Thanx a lot it helps me with y studies. Saving..... Post Reply Close Saving..... Edit Comment Close By: GrzesiekP (10 month(s) ago) May i please have a copy of your power point presentation? Thanks, and send it at: grzesiekp14@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: everblues (13 month(s) ago) May i please have a copy of your powerpoint presentation. It would be great to use in my Environmental Science Class. I need it tonight! Thank you. rfarmer03@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript The Phosphorus Cycle: The Phosphorus Cycle Masta B Yoo, Devin Kim, Drew Li, Justin Yun, Raymond Kim Basic Chemistry: Basic Chemistry Essential element of life Phosphorus is a Group 15 (5A) element Symbol: P Atomic number: 15 Atomic mass: 30.974 Color: colorless/ red/ silvery white Basic Chemistry continued: Basic Chemistry continued Nonmetal Density: 1823 kg/m3 Atomic radius: 100 pm Solid Melting Point: 317.3 K Boiling Point: 550 K Basic Chemistry continued: Basic Chemistry continued Key ingredient to plants fertilizers In nature, Phosphorus exists in form of PhosphateBasic Chemistry, cont.: Basic Chemistry, cont. Formulas of rocks containing phosphate are fluoroapatite (3Ca3(PO4)2.CaF2), chloroapaptite, (3Ca3(PO4)2.CaCl2), and hydroxyapatite (3Ca3(PO4)2.Ca(OH)2) Description of Phosphorus: Description of Phosphorus Most common form of phosphorus is red and white. Both are tetrahedral groups of four atoms. White phosphorus burns on contact with air and can change into red phosphorus when exposed to light or heat. Description of Phosphorus Cont.: Description of Phosphorus Cont. White phosphorus has two modifications. Ordinary phosphorus is waxy white solid. When pure it is colorless and transparent.Description, Cont.: Description, Cont. Pure phosphorus is insoluble in water but soluble in carbon disulphide Catches fire spontaneously in air. Background: Background Very poisonous Never found in free nature Essential ingredient of all cell protoplasm, nervous tissue, and bones Most commonly found as phosphates Part of DNA materials and energy distributionUses of Phosphorus: Uses of Phosphorus Used to make waterproof matches, pyrotechnics, smoke screens, tracer bullets, and incendiary shells. Used in fertilizer Used to produce special glasses, for example sodium lampsUses, continued: Uses, continued Calcium Phosphate is used to create fine Chinaware Monocalcium Phosphate used to make baking powder Used in making steel, and Phosphor Bronze Na3PO4 is used as a cleaning agent, water softener, and also prevents corrosion in pipesHazards and Risks: Hazards and Risks Severely toxic White form is more toxic than red form Chronic poisoning leads to necrosis of jaw (phossy-jaw) Phosphate pollution comes from detergents, insecticides, and fertilizers Inorganic phosphorus is harmlessBackground: Background The phosphorus cycle does not have a gas phase, but small amounts of phosphoric acid rise into the atmosphere, contributing to acidic precipitation. Background: Background The water, carbon, and sulfur cycles all include at least one phase in which the element is in its gaseous state. The largest reservoir of phosphorus is in sedimentary rock.The Cycle: The CycleDescription of Cycle: Description of Cycle Simplest of the cycles Phosphorus has only one form – phosphate Always part of an organism, dissolved in water, or in the form of rockDescription of Cycle: Description of Cycle Phosphorus enters environment from rocks or deposits Apatite is the phosphate rock where phosphate is available Weathering and erosion releases phosphate ions that are soluble in waterDescription, cont.: Description, cont. Phosphate then acts as fertilizers or nutrients for land plants It gets incorporated into molecules essential for life like ATP, adenosine triphosphate – this is important in storage and use of energy Description, cont.: Description, cont. Phosphate is in backbone of DNA and RNA When animals and plants die, phosphates will return to the soils or oceans again during decayDescription, cont.: Description, cont. Phosphorus cycles through plants and animals much faster than it does through rocks and sediments.. A lot of phosphate goes into the water from erosion and leaching Water plants use this phosphate as nutrientsDescription, cont.: Description, cont. Phosphate is the limiting agent in growth of plants and algae If there is a lack of phosphate, plants grow slowly or are stunted If too much, excess growth may occurDescription, cont.: Description, cont. Phosphate in water is precipitated from water as ion phosphate (insoluble) Phosphate in shallow sediment may be recycled into water In deep sediment in water, it is available as part of as part of rock formations for cycle to repeatDescription, cont.: Description, cont. After that, phosphorus will end up in sediments or rock formations again, remaining there for millions of years. Eventually, phosphorus is released again through weathering and the cycle starts over.Human Influences on Cycle: Human Influences on Cycle Human influences on phosphate cycle mostly comes from introduction & use of commercial synthetic fertilizers. Phosphate obtained by mining at certain deposits of calcium phosphate called apatite. Influences cont.: Influences cont. Phosphate rock and sulfuric acid are combined to make a fertilizer called “super phosphate.” There are many negative effects of using this fertilizer.Influences cont.: Influences cont. A lot of the fertilizer is lost through the water run-off because plants aren’t able to use up all of it. Eventually the wasted phosphate in the water is precipitated as it settles at the bottom of the body of water.Influences cont.: Influences cont. In some lakes & ponds the phosphate can be recycled as a problem nutrient. Other sources of phosphate are in out flows from local sewage treatment plans. Interesting Facts: Interesting Facts Originally, phosphorus was extracted from urine. Highly energy intensive. Gr. phosphoros, meaning “light bearer”Facts, cont.: Facts, cont. In 1669, German alchemist Henning Brand discovered phosphorus from a preparation from urine. The only correct spelling of the element is phosphorus. There does exist a word phosphorous, but it is the adjectival form for the smaller valencyBibliography: Bibliography “Nutrient Cycling in Ecosystems.” http://home.earthlink.net/~dayvdanls/ecosys4.htm 17 September 2004 “Phosphorus.” http://pearl1.lanl.gov/periodic/elements/15.html 17 September 2004Bibliography cont.: Bibliography cont. “Web-Elements.” http://www.webelements.com/webelements/elements/text/P/key.html 17 September 2004 http://en.wikipedia.org/wiki/Phosphorus 17 September 2004 “Virtual Chembook.” http://www.elmhurst.edu/~chm/vchembook/308phosphorus.html 17 September 2004