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中文名称：海洋沉积物
英文名称：Marine Sediment订货以英文名称为准。
产品编号：IAEA-475CAS：/
品牌：标准物质产地：进口
标准值：见证书分子式：/
规格 市场价(元) 折后价(元) 供货周期 数量 加入购物车 20g 0.00 0.00 3-4周 加入购物车
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产品详细介绍
IAEA-475海洋沉积物Marine Sediment
IAEA-475 coastal sediment was collected around Townsville, Australia during the sampling campaign organised by the Marine Environment Study Laboratory (MESL), James Cook University and ANSTO, Australia. The certified mass fraction values were established on the basis of results reported to the IAEA-MESL by 8 laboratories (14 data sets). Laboratories were requested to analyse Ag, Al, As, Cd, Co, Cr, Cu, Fe, Hg, MeHg, Li, Mn, Ni, Pb, Sr, and Zn using validated analytical method. This Certified Reference Material is intended to be used for quality assurance and quality control purposes. The IAEA-475 Certified Reference Material is also suitable for method development and validation of analytical procedures, including potential bias evaluation, and for training purposes.
Certified mass fraction values (based on dry mass)
Analyte
Unit
Certified value(a)
Expanded uncertainty(b)
As
mg kg-1
12.6
0.7
Co
mg kg-1
12.4
0.5
Cr
mg kg-1
65.8
2.9
Cu
mg kg-1
27.8
1.8
Fe
mg kg-1
34.2 × 103
1.9 × 103
Hg
mg kg-1
29.9 × 10-3
1.5 × 10-3
MeHg
mg kg-1 as Hg
0.199 × 10-3
0.034 × 10-3
Ni
mg kg-1
28.5
1.1
Pb
mg kg-1
29.9
1.5
Zn
mg kg-1
100
6
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Information on calculation of certified values: Certified values are calculated from the accepted data sets, each set being obtained by a different laboratory and/or a different method of determination following ISO Guide 35 ‘Reference materials – General and statistical principles for certification’ [1].
Information on method used for uncertainty estimation: The uncertainty is expressed as a combined uncertainty with a coverage factor k = 2, corresponding to a level of probability 95%, estimated in accordance with the JCGM 100:2008 ‘Evaluation of measurement data – Guide to the expression of uncertainty in measurement’ [2] and ISO Guide 35 [1].
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