Determination of sulfur and phosphorus in iron ore by inductively coupled plasma atomic emission spectrometry after sample dissolution with inverse aqua reqia in low temperature
SU Ling-yun
Analysis Center of Yunnan Nuclear Industry 209 Geological Brigade, Kunming 650000, China
Abstract：The sulfur and phosphorus are main harmful components in iron ores. Their contents should be accurately determined. In this study, the iron ore sample was dissolved with inverse aqua reqia and bromine water in low temperature. P 213.618 nm and S 182.034 nm were selected as the analysis lines. The determination method of sulfur and phosphorus in iron ore by inductively coupled plasma atomic emission spectrometry was established. The detection limit of sulfur and phosphorus was 0.019 μg/mL and 0.004 μg/mL, respectively. The results indicated that the calcium, iron and aluminum in sample had no interference in the determination of sulfur and phosphorus. Copper did not interfere in the determination of sulfur, but it had interference in the determination of phosphorus, which could be eliminated by deducting the left background. The sulfur and phosphorus in five standard samples of iron ore were determined for five times. The found results were consistent with the certified values. The relative standard deviations (RSDs, n=5) were 0.54%-3.1% and 0.40%-3.0%, respectively.
苏凌云. 低温逆王水溶样-电感耦合等离子体原子发射光谱法测定铁矿中硫和磷[J]. 冶金分析, 2014, 34(11): 69-72.
SU Ling-yun. Determination of sulfur and phosphorus in iron ore by inductively coupled plasma atomic emission spectrometry after sample dissolution with inverse aqua reqia in low temperature. , 2014, 34(11): 69-72.
