THE SOLUTION
矿物元素 | 钾 | 钙 | 铜 | 锌 | 铁 | 锰 | 氯 | 磷 | 碘 | 硒 |
检出限1 | 5.0 | 6.0 | 0.5 | 0.2 | 1.2 | 0.28 | 34 | 333 | 0.37 | 0.15 |
奶粉名称 | 元素种类 | Fe | Cu | Zn | Mn | P(%) | Cl(%) | K(%) | Ca(%) | I | Se |
珀淳奶粉(澳洲) | 标示值 | 74 | 3.5 | 50 | 0.49 | 0.454 | 0.64 | 0.835 | 0.81 | 0.98 | —— |
测试值 | 73.19 | 4.57 | 48.72 | 0.50 | 0.50 | 0.63 | 0.83 | 0.81 | 1.46 | —— | |
相对偏差 | -1.1% | 30.5% | -2.6% | 1.4% | 10.4% | -1.2% | -0.2% | -0.3% | 49.0% | ||
佳贝艾特奶粉(荷兰) | 标示值 | 38 | 3.31 | 32 | 0.32 | 0.3 | 0.482 | 0.592 | 0.438 | 0.89 | 0.14 |
测试值 | 47.62 | 4.18 | 37.48 | 0.40 | 0.44 | 0.46 | 0.48 | 0.46 | 1.12 | 0.06 | |
相对偏差 | 25.3% | 26.3% | 17.1% | 26.4% | 46.8% | -3.6% | -19.1% | 4.8% | 26.0% | -54.8% | |
至初奶粉(新西兰) | 标示值 | 55 | 3.65 | 51 | 3.2 | 0.26 | 0.34 | 0.54 | 0.39 | 0.7 | 0.183 |
测试值 | 51.70 | 4.01 | 48.04 | 3.47 | 0.31 | 0.42 | 0.47 | 0.35 | 0.71 | 0.12 | |
相对偏差 | -6.0% | 10.0% | -5.8% | 8.6% | 18.4% | 23.0% | -13.8% | -10.6% | 1.7% | -36.2% |
Fe | Cu | Zn | Mn | P(%) | Cl(%) | K(%) | Ca(%) | I | |
标示值 | 74 | 3.5 | 50 | 0.49 | 0.454 | 0.64 | 0.835 | 0.81 | 0.98 |
样品1 | 72.12 | 4.62 | 48.68 | 0.476 | 0.531 | 0.638 | 0.817 | 0.825 | 1.58 |
样品2 | 76.00 | 4.72 | 49.68 | 0.43 | 0.517 | 0.618 | 0.865 | 0.799 | 1.35 |
样品3 | 74.17 | 4.2 | 48.41 | 0.405 | 0.483 | 0.621 | 0.847 | 0.801 | 1.41 |
样品4 | 71.96 | 4.72 | 49.13 | 0.609 | 0.469 | 0.650 | 0.834 | 0.822 | 1.62 |
样品5 | 72.55 | 4.61 | 48.51 | 0.548 | 0.506 | 0.630 | 0.839 | 0.790 | 1.55 |
样品6 | 72.35 | 4.53 | 47.89 | 0.514 | 0.500 | 0.636 | 0.797 | 0.806 | 1.25 |
平均值 | 73.19 | 4.57 | 48.72 | 0.50 | 0.50 | 0.63 | 0.83 | 0.81 | 1.46 |
相对偏差 | -1.1% | 30.5% | -2.6% | 1.4% | 10.4% | -1.2% | -0.2% | -0.3% | 49.0% |
RSD | 2.2% | 4.2% | 1.3% | 15.3% | 4.5% | 1.9% | 2.8% | 1.7% | 10.0% |
应用特点
定量分析