“…The complexing of mercury(II) with with guanylthiourea (250) and the titration of mercury (II) with this compound (276) have been reported. Following sample dissolution, mercury in ores has been determined by amperometric titration in acetate buffer with potassium hydroxyethylpiperazinecarbodithoate (271). Submilligram amounts of mercury(II) have been titrated with S-methylisothiuronium sulfate (SMU) at a vibrating platinum electrode (104).…”