Abstract：The sample was dissolved with hydrochloric acid and hydrogen peroxide. Then, the content of tungsten in aluminum-tungsten alloy was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The sample dissolution conditions were studied in detail. The following addition sequence of reagents was obtained: the aluminum-based particles were firstly dissolved in hydrochloric acid; after complete reaction, 10 mL of hydrogen peroxide was added. The dosage of hydrogen peroxide was different for samples with different tungsten contents. However, for aluminum-tungsten alloy samples with tungsten content of 0.10 %-15.00%, the dosage of hydrogen peroxide had no influence on the determination results when more than 100 mL of hydrogen peroxide was added. The linearity of calibration curve was good when the mass concentration of tungsten was within 500 mg/L. The correlation coefficient was 0.999 5. The effect of matrix aluminum could be eliminated by matrix matching method. The proposed method was applied to the analysis of aluminum-tungsten intermediate alloys with various mass fraction of tungsten. The found results were consistent with those obtained by cinchonine gravimetric method. The recoveries were between 98% and 102%. The relative standard deviation (RSD, n=9) was 2.8%-5.1%. This method could meet the requirements of rapid analysis for scientific research and production.
邹龙,刘荣丽,易师. 电感耦合等离子体原子发射光谱法测定铝钨合金中钨[J]. 冶金分析, 2014, 34(11): 65-68.
ZOU Long, LIU Rong-li, YI Shi. Determination of tungsten in aluminum-tungsten alloy by inductively coupled plasma atomic emission spectrometry. , 2014, 34(11): 65-68.
