Copper belongs group of transition metals and to Ib group of Periodic table of the elements. Copper is very present in Earth crust like sulphides, oxides, carbonates and rarely like metal. It is using for production of pipes, faucets, alloy (bronze), portage, dishes, money, in electro industry etc. The most important compounds are oxides and sulphates. Industrial sources of water pollution are ores melting and refinement, coal combustion, galvanization, plate, photography, insecticides, fungicides and industry of iron and steel.
Origin in water
Copper quantity in water depends on pH value of environment. It is very mutable and deposites in soluble with pH from 5,3. Because of that, copper in neutral or water with close pH value to 7 is in very small quantities (1-100 mg/l). Raised copper values are in waters near copper bearing. In acid mine waters, copper content can be from 10-100 mg/l. Copper origin is connecting for ore bodies. The largest quantities in waters are in zones of igneous and eruptive rocks. From sedimentary rocks copper presence is connecting in surface loams, and smaller in marine loams and carbonate rocks, and the smallest in sandy rocks.
Copper is the most significant accelerant in organism. It is essential element for people, because is necessary for many enzyme reactions.
Copper assists in bone forming. Copper presence is necessary for haemoglobin synthesis (helps iron to embed in haemoglobin). Copper has part in growth, making pigment and keratin in hair.
Doses to 100 mg, which we take oral, make symptoms of gastroenteritis with qualm.
Maximal allowable concentrations
According to recommendations of EU (Directive 98/83/EC) and according to our rules for drinking water (Sl. list SRJ 42/98), limitary value for copper is 2 mg/1.