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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-457CAS：/
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-457海洋沉积物Marine Sediment
A sample of 44 kg of sediment was delivered to the IAEA Environment Laboratories by the Korean Ocean Research and Development Institute. The freeze dried material was milled to a powder and then sieved through a set of sieves. The fraction of 26 μm was collected and further homogenized for 14 days in a clean atmosphere at a temperature of 20 °C (+/-2 °C) and relative humidity of 50%. After checking for the homogeneity of the sample material, aliquots of about 20 g were packed into pre-cleaned brown borosilicate glass bottles with polyethylene screw caps and then sealed in plastic bags. The sample material was labeled IAEA-457.
Certified values for mass fractions
(based on dry mass)Analyte Unit Certified value Expanded uncertainty Ag mg/kg 1.93 0.38 Al mg/kg 82660 3430 As mg/kg 10.2 1.0 Cd mg/kg 1.09 0.08 Co mg/kg 14.7 1.0 Cr mg/kg 144 8 Cu mg/kg 365 19 Fe mg/kg 41450 2240 Hg mg/kg 0.143 0.012 Li mg/kg 64.2 5.5 Mn mg/kg 427 30 Ni mg/kg 53.1 2.7 Pb mg/kg 105 7 Sn mg/kg 27.40 0.75 Sr mg/kg 137 10 V mg/kg 87.4 8.1 Zn mg/kg 425 25.8 The assigned property values were established on the basis of results reported by participating laboratories to the IAEA Environment Laboratories in Monaco. The details concerning all reported results as well as the criteria for assignment of property values can be found in the respective report.
