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中文名稱：石灰華
英文名稱：Travertine訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號(hào)：IAEA-C-2CAS：/
品牌：標(biāo)準(zhǔn)物質(zhì)產(chǎn)地：進(jìn)口
標(biāo)準(zhǔn)值：見證書分子式：/
規(guī)格 市場(chǎng)價(jià)(元) 折后價(jià)(元) 供貨周期 數(shù)量 加入購(gòu)物車 50g 0.00 0.00 3-4周 加入購(gòu)物車
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產(chǎn)品詳細(xì)介紹
IAEA-C-2石灰華Travertine
IAEA?C2 Travertine was obtained from a fresh water carbonate (travertine) deposited on gravels of the lower terrace of the Molasse Basin in Bavaria, Germany, located approximately 50km north of Munich. The material was covered by five meters of glacial deposits. It was kindly supplied by the Institute of Hydrology of the GSF (Forschungszentrum für Umwelt und Gesundheit), Neuherberg, and homogenized by the IAEA. The ground material was mechanically ground and mixed. After adding water the suspension was thoroughly mixed again. After drying, the material was milled to powder.
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: 1991-01-01Recommended value
14C activity
[pMC]Estimated standard
error [pMC]41.14 0.03
Information valued13CPDB
[‰]Standard deviation
[‰]-8.25 0.31 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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