Izinsimbi ezisindayo ziyiqembu lezakhi zokulandelela ezihlanganisa izinsimbi kanye ne-metalloids njenge-arsenic, i-cadmium, i-chromium, i-cobalt, ithusi, insimbi, i-lead, i-manganese, i-mercury, i-nickel, i-tin ne-zinc. Ama-ion ensimbi aziwa ngokungcolisa inhlabathi, umkhathi kanye nezinhlelo zamanzi futhi anobuthi...
Funda kabanzi