摘要
采用ELTRA CS2000碳硫分析仪对镍铁合金中硫含量进行测定。以含硫量相近的铸铁标准样品对仪器进行校准,确定了称样量200mg,助熔剂纯铁0.3g、钨粒1.5g的最佳测定条件。重复性实验表明方法的相对标准偏差RSD在3%以下,精密度较高,加标回收实验镍的回收率在98.75%至101.79%之间,具有较好的准确度。该方法可用于镍铁合金中硫含量的准确测定。
A method was described for the determination of sulfur in Ferro--nickel alloy by ELTRA CS2000 carbon and sulfur analyzer. The instrument was calibrated by cast iron standard sample which has similar sulfur content. The best determination conditions are sample mass： 200 mg, pure iron flux： 0.3 g, tung- sten flux： 1.5 g. The repetition experiment showed that the method has high precision： the relative stand- ard deviation （RSD） was less than 3%, and the standard addition recovery experiment showed that the high accuracy： the recovery rate of sulfur was in the range of 98.75% - 101. 79%. The method can be used to accurate determination of sulfur in Ferro--nickel alloy.
出处
《有色矿冶》
2015年第3期52-54,共3页
Non-Ferrous Mining and Metallurgy
关键词
镍铁合金
硫
高频燃烧红外吸收法
ferro-- nickel alloy
sulfur
high frequency-- infrared absorption method
