- EC681m元素濃度
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LOW-DENSITY POLYETHYLENE |
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Mass Fraction |
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|
Certified value 1) |
Uncertainty 2) |
Unit |
|
|
As 砷 |
17.0 |
1.2 |
mg/kg |
|
Br 溴 |
1.43 |
0.08 |
g/kg |
|
Cd 鎘 |
146 |
5 |
mg/kg |
|
Cl 氯 |
0.38 |
0.06 |
g/kg |
|
Cr 鉻 |
45.1 |
1.9 |
mg/kg |
|
Hg 汞 |
9.9 |
0.8 |
mg/kg |
|
Pb 鉛 |
69.7 |
2.5 |
mg/kg |
|
S 硫 |
0.64 |
0.10 |
g/kg |
|
Sb 銻 |
86 |
7 |
mg/kg |
|
Sn 錫 |
99 |
6 |
mg/kg |
|
Zn 鋅 |
1.17 |
0.04 |
g/kg |
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1) Certified values are values that fulfil the highest standards of accuracy. The given values represent the unweighted mean values of the means of accepted sets of data, each set being obtained in a different laboratory and/or with a different method of determination. The certified value and its uncertainty are traceable to the International System of units (SI). 2) The uncertainty is the expanded uncertainty of the certified value with a coverage factor k = 2 corresponding to a level of confidence of about 95 % estimated in accordance with ISO/IEC Guide 98-3, Guide to the Expression of Uncertainty in Measurement (GUM:1995), ISO, 2008. |
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