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中文名稱:大理石
英文名稱:Marble訂貨以英文名稱為準。
產(chǎn)品編號:IAEA-C-1CAS:/
品牌:標準物質(zhì)產(chǎn)地:進口
標準值:見證書分子式:/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 50g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細介紹
IAEA-C-1大理石Marble
A slab of Carrara marble (approximately 300 kg) was freshly cut in the quarry of Carcaraia, locality of Acquabianca, municipality of Gorfigliano, province of Lucca, Italy, by the company IMEG of Viareggio, and supplied free of charge to the IAEA. The reported category of marble is “Marmo Bianco P.” and contains 100% of CaCO3. The marble was subsequently prepared at the IAEA, mechanically crushed, and milled down to a dust?free fraction of 1.6 ? 5.0 mm. The recommended value of this quality control material is the result of the statistical evaluation of an interlaboratory comparison [1,2].
Reference date for decay correction: 1991-01-01
Recommended value14C activity
[pMC]Estimated standard
error [pMC]0.00 0.02
Information valued13CPDB
[‰]Standard deviation
[‰]2.42 0.33 References:
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ROZANSKI, K., Consultants' group meeting on 14C reference materials for radiocarbon laboratories. February 18-20, 1991, Vienna, Austria.
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ROZANSKI, K., STICHLER, W., GONFIANTINI, R., SCOTT, E. M., BEUKENS, R. P., KROMER, B., VAN DER PLICHT, J., The IAEA 14C Intercomparison exercise 1990, Radiocarbon, 34 3 (1992) 506-519.
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