本文介紹在0.5M硫酸-10％酒石酸(約0.5M)底液中,用鐵粉還原銅,鐵等干擾元素,作钛的極譜法測定。應用於銅礦、鉛鋅礦及钛磁鐵礦中,操作簡便迅速,並与比色法結果相符。在酒石酸用量上較Graham法减低一半,干擾物採用鐵粉還原也較Graham法及法迅速和有效。惟钼的干擾不能消除。 This article describes the 0.5M sulfuric acid - 10% tartaric acid (about 0.5M) at the end of liquid iron powder reduction of copper, iron and other interfering elements for the polarographic determination of titanium. Used in copper, lead-zinc ore and titanium magnetite, the operation is quick and easy, and consistent with colorimetric results. The dosage of tartaric acid was reduced by half compared with Graham’s method. The reduction of iron oxide by the interference substance was also faster and more effective than the Graham method. However, the interference of molybdenum can not be eliminated.