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中文名称：扇贝成分分析标准物质
英文名称：Scallop订货以英文名称为准。
产品编号：NIES-CRM-15CAS：/
品牌：标准物质产地：日本
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
This environmental certified reference material (CRM) was developed and certified by the National Institute for Environmental Studies (NIES) for the determination of tributyltin [TBT: Sn(C4H9)3+ ], triphenyltin [TPT: Sn(C6H5)3+ ], and total tin in scallops and materials of similar matrix.
Certified Values
Certified Values
Compound Unit Mass fraction Analytical method TBT [Sn(C4H9)3+ ] mg/kg 0.404 ± 0.027 GC-MS, LC-MS TPT [Sn(C6H5)3+ ] mg/kg 0.0170 ± 0.0017 GC-MS, LC-MS Sn mg/kg 0.179 ± 0.021 ICP-MS, ID-ICP-MS, INAA GC-MS, gas chromatography - mass spectrometry; ICP-MS, inductively coupled plasma – mass spectrometry; ID-ICP-MS: isotope dilution inductively coupled plasma – mass spectrometry; INAA, instrumental neutron activation analysis; LC-MS, liquid chromatography - mass spectrometry.
The uncertainty attached to the certified values is the expanded uncertainty using a coverage factor k=2, corresponding to a confidence interval of approximately 95 %.
All certified values were determined based on dry mass.Characterization
The property values of the material were statistically determined based on chemical analyses by 21 organizations using a wide range of methods. A property value satisfying the following conditions was accepted as a certified value: 1) the relative standard deviation associated with the mean of the laboratory means was 5 % or less; 2) the number of laboratories contributing to the mean of the laboratory means was at least six; 3) the number of methods contributing to the mean of the laboratory means was at least two. The uncertainty attached to the certified values is the expanded uncertainty using a coverage factor k=2, corresponding to a confidence interval of approximately 95 %. Property values for the elements except tin are given as reference values. All certified and reference values were determined based on dry mass.
Reference Values
Element Unit Mass fraction Analytical method Na % 0.561 ICP-AES, INAA Mg % 0.179 ICP-AES, INAA, XRF P % 0.956 ICP-AES, XRF K % 1.65 ICP-AES, INAA, XRF Fe mg/kg 10.8 ICP-AES, ICP-MS Cu mg/kg 0.889 ICP-AES, ICP-MS Zn mg/kg 56.1 ICP-AES, ICP-MS, INAA As mg/kg 3.76 AS, F-AAS, HR-ICP-MS, ICP-MS, INAA, MIP-MS, XRF Br mg/kg 43.7 INAA, XRF AS, absorption spectrophotometry; F-AAS, furnace atomic absorption spectrometry; HR-ICP-MS, high resolution inductively coupled plasma – mass spectrometry; ICP-AES, inductively coupled plasma – atomic emission spectrometry; ICP-MS, inductively coupled plasma – mass spectrometry; INAA, instrumental neutron activation analysis; MIP-MS, microwave induced plasma mass spectrometry; XRF, X-ray fluorescence spectrometry.
All reference values were determined based on dry mass.Description of the Material
The material consists of freeze dried and powdered adductor muscle of scallop (20 g) in a vacuum-packed in a plastic bag.
Homogeneity
TBT, TPT, and the elements were determined in material taken from 10 bags randomly selected from the 1380 bags, using LC-MS, ICP-AES, or ICP-MS. The between-bottle variation evaluated by a one-way analysis of variance (ANOVA) showed the relative standard deviations between bags for the analytes to be less than 1 %. The material, therefore, is sufficiently homogeneous for its intended use as a reference material.
