土壤中三氧化二铝测定结果的不确定度评定

Uncertainty Evaluation for the Determination Results of Aluminum Oxide in Soil Samples

1.
Quanzhou Laboratory, The Bureau of Geology and Mineral Resources of Fujian Province
2.
Detecting Centre of Shanghai Geotechnical Engineering
3.
Detecting Centre of Shanghai Geotechnical Engineering

摘要: 讨论了影响三氧化二铝测定结果不确定度的各种因素，并评定了土壤样品中测定三氧化二铝结果的不确定度。采用EDTA络合、氟化钾置换、乙酸锌溶液滴定的测定方法，当三氧化二铝的含量为15.03%时，其扩展不确定度U=0.20%（Urel=1.4%，k=2）。
- 不确定度评定； /
- 三氧化二铝； /
- 土壤
Abstract: The impacting factors on the uncertainty in measurement results of Al2O3in soil samples were discussed and the uncertainty was evaluated. EDTA complexKI replacemenZn(Ac)2titration method was used for sample pretreatment and determination of Al2O3in soil samples. When concentration of Al2O3is 15.03%, the expanded uncertainty is 0.20% (Urel=1.4%，k=2).
- uncertainty /
- evaluation /