fosfatinnhold

Fosfatinnhold refers to the concentration of phosphate, typically measured as phosphorus in the form of phosphate ions (PO4 3−), present in a sample such as soil, water, food, or biological tissue. In agriculture, phosphate is a key macronutrient influencing plant growth, root development, and the synthesis of DNA, RNA, and ATP. Soils rich in fosfatinnhold promote vigorous crop development, but excessive phosphate can leach into waterways, contributing to eutrophication. The content is commonly quantified using methods such as the molybdenum blue technique for soils and waters, and spectrophotometric or ion chromatography techniques in food and biological studies. Typical soil phosphate levels range from 0.1 % to 2 % dry weight, while regulatory standards for drinking water limit phosphate to 0.3 mg/L to avoid water quality issues. In food products, fosfatinnhold is monitored to ensure compliance with nutrition labeling, with most processed foods containing 10–50 mg of phosphorus per 100 g. Understanding fosfatinnhold is essential for balancing fertilization efficiency, protecting aquatic ecosystems, and maintaining dietary phosphorus adequacy.