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中文名稱:湖泊沉積物
英文名稱:Lake Sediment訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號(hào):IAEA-SL-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 市場價(jià)(元) 折后價(jià)(元) 供貨周期 數(shù)量 加入購物車 250g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細(xì)介紹
IAEA-SL-2湖泊沉積物L(fēng)ake Sediment
The IAEA-SL-2 lake sediment was collected from the Neusiedlersee, located some 80 km south-east of Vienna, Austria. The material was collected directly from the top layer of the sediment using a mud pump and then coarse particle were removed in the field by passing the sediment through a 1 cm sieve. After drying, the material was milled to pass a 500 μm sieve. This fraction was then passed through a 71 μm sieve. The portion of the material with a size fraction between 72 and 500 μm was designated SL-2 and used for an intercomparison study of radionuclides.
Reference date for decay correction: 1986-01-31
Analyte Value Unit 95% C.I. N R/I/C 137Cs 2.4 Bq/kg 2.1 – 2.7 13 R 40K 240 Bq/kg 216 – 264 16 R (Value) Concentration calculated as a mean of the accepted laboratory means (N) Number of accepted laboratory means which are used to calculate the recommended or information values and their respective confidence intervals (R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in one or more international interlaboratory comparisons organized by the Chemistry Unit, IAEA Laboratories, Seibersdorf. The details concerning the criteria for qualification as a recommended or information value can be found in the respective report (attached).