Total phosphorus and orthophosphate on fish farms

Fosfor je biogeni element sa funkcionalnom i strukturalnom ulogom u sintezi nukleinskih kiselina (DNA i RNA), fosfolipida u staničnim membranama i staničnog goriva u obliku ATP-a. Javlja se u prirodnim i otpadnim vodama uglavnom u obliku fosfata. Klasificirani su kao ortofosfati, kondenzirani fosfati (piro-, meta- i ostali polifosfati) te organski vezani fosfati. Istraživanje je provedeno monitoringom na uzgajalištu „Kali Tuna“ pod Mrđinom, a rezultati istraživanja dobiveni su putem laboratorijskog rada prema analitičkim metodama. Cilj ovoga rada bio je odrediti ukupni fosfor i ortofosfate na uzgajalištima riba kako bi se proučila količina i utjecaj navedenih spojeva na ribe u kaveznom uzgoju. Rezultat rada donesen je nakon provedenih analiza te izrade grafova koji pokazuju da je najveća koncentracija fosfora prisutna na morskom dnu te da se smanjenjem dubine, smanjuje i mjerena koncentracija.Phosphorus is a biogenic element which has structural and functional role in synthesis of nucleic acid (DNA and RNA), phospholipids in cell membranes and cell fuel in form of ATP. It appears in natural and waste waters, mostly in form of phosphate. It is classified as orthophosphate, condensed phosphate (phyro-, meta- and other polyphosphates) and organic phosphates. Research was conducted by monitoring the fish farm: „Kali Tuna“ near Mrđina and the results are acquired by laboratory work according to analitycal methods. The aim of this study was to determine total amount of phosphorus and orthophosphate on fish farms in order to establish the impact these compounds could have on fish in the breeding cage. The result of the paper is presented by analysis and graphs showing the highest concentration of phosphorus present at the seabed which is reduced in concentration when the depth is reduced