phosphorus

Phosphorus is one of the key elements necessary for growth of plants and animals. Phosphates (PO4---) are formed from this element. Phosphates exist in three forms: orthophosphate, metaphosphate (or polyphosphate) and organically bound phosphate. Each compound contains phosphorous in a different chemical formula. Ortho forms are produced by natural processes and are found in sewage. Poly forms are used for treating boiler waters and in detergents. In water, they change into the ortho form. Organic phosphates are important in nature. Their occurrence may result from the breakdown of organic pesticides, which contain phosphates. They may exist in solution, as particles, loose fragments or in the bodies of aquatic organisms. Rainfall can cause varying amounts of phosphates to wash from farm soils into nearby waterways. Phosphate will stimulate the growth of plankton and aquatic plants which provide food for fish. This may cause an increase in the fish population and improve the overall water quality. However, if an excess of phosphate enters the waterway, algae and aquatic plants will grow wildly, choke up the waterway and use up large amounts of oxygen. This condition is known as eutrophication or over-fertilization of receiving waters. This rapid growth of aquatic vegetation eventually dies and as it decays it uses up oxygen. This process in turn causes the death of aquatic life because of the further reduction of dissolved oxygen levels.



The term "phosphorus" was found in the following pages:

Agilent Technologies' Acquisition of Varian, Inc. Cleared by European Commission | EVISA's News
Directory of scientists: Paul J. Worsfold
HPLC-ICPMS/MS as a versatile tool for the speciation of non-metals: Sulfur species in wine | EVISA's News
Link database: Phosphorus in Food
Agilent e-Seminar: A Metallomics Approach for Analysis of Biological and Environmental Compounds via ICP-MS | EVISA's Agenda of Events
Triple Quad ICP-MS: Pushing the limits for quantitation of phosphorus and sulfur | EVISA's News
Instrument database: Oxford Instruments - ARC-MET8000
Imaging and Identification of Sulfur Species within Corals by X-ray Spectroscopy | EVISA's News
Material database: Sigma-Aldrich - Matrix CRM - Soil, Sludge, Sediment: Trace Metals - Sewage Sludge 4
1,2-Hexanediol as eluent for HPLC Enables Coupling with ICPMS under Standard Conditions | EVISA's News
Determination of Glyphosate in Rice with HPLC-ICP-MS/MS | EVISA's News
LC-ICP-MS: The most often used hyphenated system for speciation analysis | EVISA's News
ICP-MS: A versatile detection system for trace element and speciation analysis | EVISA's News
ICP-MS: A versatile detection system for speciation analysis | EVISA's News
Arsenic, an element of archaic life ? | EVISA's News
Instrument database: SPECTRO Analytical Instruments Inc. - SPECTROMAXx
Arsenic speciation in different parts of the rice plant | EVISA's News
Instrument database: Thermo Scientific - ELEMENT XR
Instrument database: Thermo Scientific - ELEMENT-2
Directory of scientists: Peter Uden