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中文名稱：海洋沉積物
英文名稱：Marine Sediment訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號(hào)：IAEA-475CAS：/
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 20g 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-475海洋沉積物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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