【摘要】 应用偶氮氯膦－ｍｋ为显色剂，在ＨＣｌＯ４介质中，以Ｈ３ＰＯ４－Ｈ２Ｃ２Ｏ４作掩蔽剂，直接测定高铬铸铁中铈组稀土．结果表明，方法适用于高铬铸铁、球墨铸铁和低合金钢中铈组稀土元素的测定．更多还原

【Abstract】 In this paper, the reagents, devices and experimental methods used in determining the content of mixed rare-earth rich in cerium in high-chrome cast iron by means of CPA-mk were recommended. The results showed that this method was fit for measurement of the content of mixed rare earth rich in cerium in high-chrome cast iron, noduler cast iron and low-alloy steel.更多还原