元素 | 线性回归方程 | 相关系数 |
56Fe | Y=14607765.029*X+25396.683 | R2=1.0000 |
63Cu | Y=19444.878*X+3336.362 | R2=0.9995 |
66Zn | Y=3457270.349*X+5850.355 | R2=0.9998 |
78Se | Y=140.561*X+2.026 | R2=0.9999 |
元素 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | P值 | |
56Fe | 微波消解 | 0.706 | 0.712 | 0.711 | 0.708 | 0.716 | 0.708 | 0.723 | 0.059 |
快速消解 | 0.724 | 0.721 | 0.721 | 0.720 | 0.724 | 0.704 | 0.721 | ||
63Cu | 微波消解 | 0.0707 | 0.0720 | 0.0716 | 0.0703 | 0.0717 | 0.0702 | 0.0718 | 0.23 |
快速消解 | 0.0707 | 0.0684 | 0.0706 | 0.0714 | 0.0710 | 0.0709 | 0.0710 | ||
66Zn | 微波消解 | 0.723 | 0.742 | 0.727 | 0.727 | 0.729 | 0.715 | 0.730 | 0.22 |
快速消解 | 0.728 | 0.702 | 0.723 | 0.732 | 0.721 | 0.721 | 0.722 | ||
元素 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 平均值 | RSD% |
56Fe | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.1 | 1.1 | 1.1 | 1.9 |
63Cu | 0.069 | 0.071 | 0.073 | 0.073 | 0.073 | 0.072 | 0.072 | 0.072 | 2.2 |
66Zn | 0.66 | 0.68 | 0.69 | 0.69 | 0.69 | 0.69 | 0.69 | 0.68 | 1.8 |
78Se | 0.00157 | 0.00158 | 0.00150 | 0.00153 | 0.00146 | 0.00151 | 0.00150 | 0.0015 | 2.8 |
43Ca | 17.5 | 18.1 | 18.5 | 18.5 | 18.5 | 18.4 | 18.4 | 18.3 | 2.1 |
24Mg | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.2 | 5.4 | 5.3 | 1.5 |
Fe | 原样含量μg | 加标样含量μg | 加标量μg | 回收率% |
738.54 | 860.39 | 125 | 97.48 | |
740.57 | 863.22 | 125 | 98.12 | |
735.17 | 864.32 | 125 | 103.32 | |
734.49 | 980.44 | 250 | 98.38 | |
729.09 | 983.26 | 250 | 101.67 | |
730.44 | 980.41 | 250 | 99.99 | |
754.07 | 1126.15 | 375 | 99.22 | |
762.85 | 1141.65 | 375 | 101.02 | |
754.74 | 1127.73 | 375 | 99.46 | |
Cu | 原样含量μg | 加标样含量μg | 加标量μg | 回收率% |
71.93 | 98.16 | 25 | 104.92 | |
72.13 | 98.06 | 25 | 103.72 | |
71.60 | 97.82 | 25 | 104.86 | |
71.01 | 106.25 | 37.5 | 93.97 | |
71.01 | 105.66 | 37.5 | 92.41 | |
70.16 | 106.50 | 37.5 | 96.92 | |
73.44 | 121.53 | 50 | 96.16 | |
74.30 | 122.89 | 50 | 97.17 | |
73.51 | 121.04 | 50 | 95.05 | |
Zn | 原样含量μg | 加标样含量μg | 加标量μg | 回收率% |
964.16 | 1085.60 | 125 | 97.15 | |
966.81 | 1092.42 | 125 | 100.49 | |
959.76 | 1087.73 | 125 | 102.38 | |
958.88 | 1232.12 | 250 | 109.30 | |
953.59 | 1226.94 | 250 | 109.34 | |
951.83 | 1220.56 | 250 | 107.49 | |
984.43 | 1374.31 | 375 | 103.97 | |
995.89 | 1389.93 | 375 | 105.08 | |
985.32 | 1377.80 | 375 | 104.66 |
Se | 原样浓度μg/L | 加标样浓度μg/L | 加标浓度μg/L | 回收率% |
14.9264 | 24.8689 | 10 | 99.4 | |
14.8620 | 29.9401 | 15 | 100.5 | |
15.0778 | 34.5341 | 20 | 97.3 |
标准物质 | 元素 | 标准值 | 实测值,mg/kg | 平均值,mg/kg | 相对标准偏差RSD/% |
蒜粉GBW10022 | Se | 0.39±0.07(10-6) | 0.387 | 0.39 | 2.3 |
0.402 | |||||
0.386 | |||||
大米粉GBW(E)080684a | Se | 0.081±0.011(10-6) | 0.0781 | 0.077 | 2.8 |
0.0750 |