Acomplexometric method for the determination of mercury(II) in presence of other metal ions. based on the selective masking action of ethanethiol towards mercury( II) is described. Mercury(II) present in a given sample solution is first complexed with an excess of EDTAand the unreacted EDTAis titrated against zinc sulphate solution at pH 5-6 (hexamine buffer) using xylenol orange as t... https://thegreensjunglebeautyshops.shop/product-category/eye-serum/