phosphorous, nitrogen, nutrient, phosphates, chloride, nitrate, sulfate, sulphate, pollutants, selenium, nitrification, arsenic, alkalinity, oxalates, copper sulfate, contaminant, dioxin, toxaphene, chlorine, fertilizer, perchlorate, sediment, sulfur, aluminum sulfate, chlorate, naoh, sodium, nitrites, chromium, calcium nitrate, prussic acid, chemicals, boron, algae, ammonium, pentoxide, orthophosphate, alkali, salts, potassium carbonate, ammonia, arsenate, manganese, oxalic acid, carbon tetrachloride, potassium permanganate, purines, toxins, tannic acid, turbidity, soils, mercury, sludge, sulfite, iodide, biphenyl, groundwater, pentachlorophenol, phytoplankton, salinity, acrolein, sulphite, cyanobacteria, potassium sulfate, polychlorinated biphenyl, ammonium sulfate, vinyl chloride, rotenone, potassium, magnesium hydroxide, silicic acid, calcium, hydroxyl radical, effluent, calcium bicarbonate, hydroperoxide, phenols, planktonic algae, fluorocarbons, dioxane, organochlorine, tritium, silt, chicken manure, calcium sulphate, sodium fluoride, carbonic acid, hydrated lime, dieldrin, tetrachlorethylene, diquat, sedimentation, fumigants, fluoride, bile acid, arsenide, manure, hydrofluoric acid, anabaena, trans fatty acid, carotene, chloramine, magnesium, zinc, iodine, cadmium, dioxide, fluorine, sulphur, zn, bicarbonate, micronutrient, ascorbic, oxygen, moisture, caloric, folate, bromine, cr, folic, hydrogen, tocopherol, carbohydrate

allotropic, apatite, basic iron, nitride, osteodystrophy, osteomalacia, parathormone, parathyroid hormone, phosphoric, phosphorous, phosphor bronze, polyphosphoric acid, rachitis, rickets, triphosphopyridine

chemical element, element

atomic number 15, p