Inductively coupled plasma atomic emission spectrometry for the determination of phosphorus in AZ series of magnesium alloys
ZHOU Xi-lin1 , TIAN Xiao-xi2 , LI-Fen3 , YAN Li-dong2 , LIU Shou-qiong1
1.Aluminum and Magnesium Center of Chong Qing Academy of Metrology and Quality Inspection, Chongqing 401121, China; 2.University of Science and Technology Liaoning, Anshan 114051, China; 3.Department of Chemical Engineering, Chongqing Technovocational College of Industry, Chongqing 401120, China
Abstract：A rapid and accurate determination method for the determination of phosphorus in AZ series of magnesium alloys was proposed. After the sample was dissolved with hydrochloric acid and hydrogen peroxide, phosphorous was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) at the wavelength of 213.618 nm with matrix matching calibration curve. For 120 μg of phosphorus in 100 mL solution, 500 mg of magnesium, 200 mg of aluminum, 10 mg of zinc and 1.0 mg of manganese had no interference with the determination. Since there was little molybdenum and copper in AZ series of magnesium alloy samples, and what&apos|s more, the intensity of molybdenum interference line was weak and the phosphorous and copper resolution of instrument was high, the interference of molybdenum and copper with phosphorous could be ignored. The detection limit was 0.028 mg/L. The proposed method was applied to determine 0.005 0%-0.15% phosphorous in casting magnesium alloy samples, the relative standard deviation was 0.57%-2.1% and the recovery was 94%-110%. The method was applicable to the quality control of phosphorous in AZ series of magnesium alloy products.
周西林, 田晓溪, 李芬, 闫立东, 刘守琼. 电感耦合等离子体原子发射光谱法测定AZ系列镁合金中磷[J]. 冶金分析, 2014, 34(4): 61-64.
ZHOU Xi-lin, TIAN Xiao-xi, LI-Fen, YAN Li-dong , LIU Shou-qiong. Inductively coupled plasma atomic emission spectrometry for the determination of phosphorus in AZ series of magnesium alloys. , 2014, 34(4): 61-64.
