Wakiilka saarista biraha culus CW-15 waa mid aan sun ahayn oo deegaan ahaan u saaxiib ah biraha culus.Kiimikadani waxay samayn kartaa iskudhis xasiloon oo leh inta badan birta monovalent iyo kala-duwan ee biyaha wasakhda ah, sida:Fe2+,Ni2+,Pb2+,Cu2+,Ag+,Zn2+,Cd2+,Hg2+,Ti+iyo Cr3+,kadibna ay gaarto ujeedada ka saarida xanuunka. ..
Akhri wax dheeraad ah