【保存条件】干燥、阴凉处。
【使用注意事项】用后闭紧瓶盖放入干燥器内于阴凉处保存。最小取样量为0.5克。
【特征形态】固态
【基体】杨树叶
【主要分析方法】X-射线荧光法、重量法、比色法等多种方法
| 组分 | 标准值 | 标准偏差 | 单位 |
| Ag | (0.013) | (10-6) | |
| Al | 0.104 | 0.06 | (10-2) |
| As | 0.37 | 0.09 | (10-6) |
| B | 53 | 5 | (10-6) |
| Ba | 26 | 4 | (10-6) |
| Be | 0.021 | 0.005 | (10-6) |
| Bi | 0.027 | 0.002 | (10-6) |
| Br | 7.2 | 1.4 | (10-6) |
| Ca | 1.81 | 0.13 | (10-2) |
| Cd | 0.32 | 0.07 | (10-6) |
| Ce | 0.49 | 0.07 | (10-6) |
| Cl | (0.23) | (10-2) | |
| Co | 0.42 | 0.03 | (10-6) |
| Cr | 0.55 | 0.07 | (10-6) |
| Cs | 0.053 | 0.003 | (10-6) |
| Cu | 9.3 | 1.0 | (10-6) |
| Dy | (0.036) | (10-6) | |
| Eu | 0.009 | 0.003 | (10-6) |
| F | 22 | 4 | (10-6) |
| Fe | 274 | 17 | (10-6) |
| Gd | (0.043) | (10-6) | |
| Hf | (0.026) | (10-6) | |
| Hg | 0.026 | 0.003 | (10-6) |
| K | 1.38 | 0.07 | (10-2) |
| La | 0.26 | 0.02 | (10-6) |
| Li | 0.84 | 0.15 | (10-6) |
| Mg | 0.65 | 0.05 | (10-2) |
| Mn | 45 | 4 | (10-6) |
| Mo | 0.18 | 0.01 | (10-6) |
| N | 2.56 | 0.06 | (10-2) |
| Na | 200 | 13 | (10-6) |
| Nd | (0.22) | (10-6) | |
| Ni | 1.9 | 0.3 | (10-6) |
| P | 1680 | 60 | (10-6) |
| Pb | 1.5 | 0.3 | (10-6) |
| Rb | 7.6 | 0.8 | (10-6) |
| S | 0.35 | 0.04 | (10-2) |
| Sb | 0.045 | 0.006 | (10-6) |
| Sc | 0.069 | 0.007 | (10-6) |
| Se | 0.14 | 0.02 | (10-6) |
| Si | 0.71 | 0.08 | (10-2) |
| Sm | 0.038 | 0.006 | (10-6) |
| Sr | 154 | 9 | (10-6) |
| Th | 0.07 | 0.01 | (10-6) |
| Ti | 20.4 | 2.2 | (10-6) |
| U | (0.028) | (10-6) | |
| V | (0.64) | (10-6) | |
| Y | 0.145 | 0.015 | (10-6) |
| Yb | 0.018 | 0.004 | (10-6) |
| Zn | 37 | 3 | (10-6) |
GBW07473a-土壤中有机
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