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:

Company database: Innov-X Systems
Journals database: Phosphorus, Sulfur, and Silicon and the Related Elements
Determination of Unknown Organic-Metal Complexes in the Environment by Liquid Chromatography–Inductively Coupled Plasma-Mass Spectrometry | EVISA's News
Material database: IRMM - Institute for Reference Materials and Measurements - BCR-033 - Superphosphate
LC-ICP-MS: The most often used hyphenated system for speciation analysis | EVISA's News
Material database: Sigma-Aldrich - Matrix CRM - Soil, Sludge, Sediment: Trace Elements on Fresh Water Sediment
Material database: Sigma-Aldrich - Matrix CRM - Soil, Sludge, Sediment: Trace Elements on Fresh Water Sediment
Directory of scientists: Peter Uden
Instrument database: Techcomp (Holdings) Ltd. - GC7900
Determination of Glyphosate in Rice with HPLC-ICP-MS/MS | EVISA's News
Instrument database: Thermo Scientific - ELEMENT XR
Material database: JRC - Joint Research Centre - BCR-033 - Superphosphate
Gas chromatography for the separation of elemental species | EVISA's News
Material database: Sigma-Aldrich - Matrix CRM - Soil, Sludge, Sediment: Trace Metals - Wet Sewage Sludge
1,2-Hexanediol as eluent for HPLC Enables Coupling with ICPMS under Standard Conditions | EVISA's News
Material database: IRMM - Institute for Reference Materials and Measurements - BCR-684 - River Sediment
Material database: Sigma-Aldrich - Matrix CRM - Soil, Sludge, Sediment: Trace Metals - Sewage Sludge 4
Agilent is introducing the second generation of Triple Quadrupole ICP-MS system: The 8900 | EVISA's News
Company database: Varsal Inc.
Gadolinium found in the brain of a patient two years after having received a Gd-based contrast agent for medical imaging | EVISA's News