There exist both dimer D2 and diethyl dithiocarbamate salts on the surface of marmatite at open-circuit potential, which can not effectively adhere on the surface of marmatite.

• 在开路电位条件下， 铁闪锌矿表面存在双乙硫氮和乙硫氮金属盐， 但不能有效地附着在电极表面。