熔融制样—X射线荧光光谱法测定小取样量地球化学样品中的主量元素

赵红坤, 郝亚波, 田有国, 高祥照, 刘亚轩

The application of melting sample preparation-X ray fluorescence spectrometry to measuring a small amount of soil certified reference material

Hong-Kun ZHAO, Ya-Bo HAO, You-Guo TIAN, Xiang-Zhao GAO, Ya-Xuan LIU

表6 方法准确度实验结果

Table 6 The experimental results of method accuracy

组分 GSD-25 GSD-26 认定值 0.65g 0.1g 认定值 0.65g 0.1g 测量值 |RE|/% 测量值 |RE|/% 测量值 |RE|/% 测量值 |RE|/% SiO2 71.14 68.49 3.7 67.98 4.4 63.48 63.01 0.7 61.97 2.4 Al2O3 12.85 12.61 1.9 12.25 4.6 14.10 14.14 0.3 13.71 2.8 TFe2O3 3.86 3.83 0.9 3.75 2.9 5.16 5.17 0.3 5.04 2.3 MgO 1.07 1.08 0.9 1.04 3.3 1.73 1.79 3.3 1.71 1.2 CaO 3.52 3.49 0.9 3.45 2.1 3.78 3.88 2.6 3.71 2.0 Na2O 2.13 2.05 3.7 2.10 1.3 0.83 0.78 6.2 0.78 6.6 K2O 3.24 3.12 3.8 3.15 2.7 3.04 3.03 0.3 2.93 3.5 Mn 827 856 3.5 828 0.1 519 537 3.4 510 1.7 P 415 411 1.0 390 6.0 498 519 4.2 517 3.8 Ti 2480 2401 3.2 2364 4.7 3680 3807 3.5 3673 0.2