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中文名稱：土壤成分分析標(biāo)準(zhǔn)物質(zhì)
英文名稱：Soil訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號(hào)：IAEA-375CAS：/
品牌：IAEA產(chǎn)地：進(jìn)口
標(biāo)準(zhǔn)值：見(jiàn)證書(shū)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(chē) 250g 0.00 0.00 3-4周 加入購(gòu)物車(chē)
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產(chǎn)品詳細(xì)介紹
The IAEA-375 material (top soil to a depth of 20 cm) was obtained from the “Staryi Viskov” collective farm in Novozybkov, Brjansk, Russia, in July 1990. The material was air dried and milled to give a grain size less than 0.3 mm by the Brjansk Centre for Agricultural Radiology and Chemistry and dispatched for further processing to the IAEA Laboratories, Seibersdorf, in November 1990. This material was γ-sterilized to ensure long-term stability of the material by inhibiting microbial action.
Reference date for decay correction: 1991-12-31
Analyte Value Unit 95% C.I. N R/I/C 106Ru 56 Bq/kg 53 – 58 26 R 125Sb 77 Bq/kg 74 – 79 38 R 129I 0.0017 Bq/kg 0.0013 – 0.0021 10 R 134Cs 463 Bq/kg 454 – 472 87 R 137Cs 5280 Bq/kg 5200 – 5360 91 R 226Ra 20 Bq/kg 18 – 22 37 R 228Th 21 Bq/kg 17 – 25 6 I 232Th 20.5 Bq/kg 19.2 – 21.9 11 R 234U 25 Bq/kg 17 – 32 5 I 238Pu 0.071 Bq/kg 0.056 – 0.085 10 I 238U 24.4 Bq/kg 19.0 – 29.8 7 I 239+240Pu 0.3 Bq/kg 0.26 – 0.34 20 I 241Am 0.13 Bq/kg 0.11 – 0.15 6 I 40K 424 Bq/kg 417 – 432 84 R 90Sr 108 Bq/kg 101 – 114 43 R As 2.56 mg/kg 2.24 – 2.88 6 I Ba 335 mg/kg 316 – 354 6 I La 17.6 mg/kg 15.3 – 19.9 5 I Ni 9.7 mg/kg 7.9 – 11.6 5 I Rb 48 mg/kg 44 – 52 8 I Th 5.2 mg/kg 5.0 – 5.4 26 R U 1.86 mg/kg 1.66 – 2.05 30 R Yb 1.73 mg/kg 1.24 – 2.22 5 I (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)
