Tooj liab yog ib qho tseem ceeb. Ib tug neeg laus xav tau ib ncig ntawm 1.2 milligrams ntawm tooj liab ib hnub, los pab enzymes hloov lub zog hauv hlwb. Cov tooj liab ntau dhau yog tshuaj lom.Copper hlau tshwm sim ib txwm muaj, tab sis tam sim no qhov loj tshaj plaws yog nyob rau hauv cov zaub mov xws li chalcopyrite thiab bornite. Copper yog tau los ntawm cov ore thiab minerals los ntawm smelting, leaching thiab electrolysis.
