北方伟业计量集团有限公司
| 序号 | 组分 | 标准值 | 不确定度 |
|---|---|---|---|
| 1 | Al | 0.007 | 0.001 |
| 2 | As | 0.02 | 0.004 |
| 3 | B | 19 | 3 |
| 4 | Ba | 2.5 | 0.3 |
| 5 | Be | 1 | |
| 6 | Bi | 2.5 | |
| 7 | Br | 0.2 | |
| 8 | Ca | 0.049 | 0.001 |
| 9 | Cd | 5.8 | 1.2 |
| 10 | Ce | 0.025 | 0.005 |
| 11 | Cl | 0.008 | |
| 12 | Co | 0.026 | 0.006 |
| 13 | Cr | 0.3 | 0.06 |
| 14 | Cs | 0.02 | |
| 15 | Cu | 2.5 | 0.2 |
| 16 | Dy | 1.1 | |
| 17 | Er | 0.65 | |
| 18 | Eu | 0.7 | |
| 19 | Fe | 16 | 2 |
| 20 | Gd | 0.95 | 0.11 |
| 21 | Hg | 2 | |
| 22 | Ho | 0.25 | |
| 23 | I | 0.12 | 0.04 |
| 24 | K | 0.77 | 0.04 |
| 25 | La | 0.014 | 0.004 |
| 26 | Li | 0.115 | 0.009 |
| 27 | Mg | 0.039 | 0.006 |
| 28 | Mn | 2.7 | 0.2 |
| 29 | Mo | 0.08 | 0.02 |
| 30 | N | 0.31 | 0.03 |
| 31 | Na | 0.116 | 0.009 |
| 32 | Nd | 0.006 | |
| 33 | Ni | 0.14 | 0.05 |
| 34 | P | 0.066 | 0.004 |
| 35 | Pb | 0.084 | 0.032 |
| 36 | Pr | 1.8 | 0.3 |
| 37 | Rb | 5 | 0.6 |
| 38 | S | 0.063 | 0.004 |
| 39 | Sb | 0.006 | |
| 40 | Se | 0.018 | |
| 41 | Si | 0.005 | 0.0013 |
| 42 | Sm | 1.5 | 0.5 |
| 43 | Sr | 6.9 | 0.5 |
| 44 | Th | 4 | 0.3 |
| 45 | Tl | 1.8 | |
| 46 | Tm | 0.12 | |
| 47 | U | 8.2 | 1.8 |
| 48 | V | 0.028 | |
| 49 | Y | 0.008 | 0.002 |
| 50 | Yb | 0.66 | |
| 51 | Zn | 2.1 | 0.4 |
| 52 | 灰分 | 2.4 |
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