The National Centre for Compositional Characterisation of Materials (NCCCM) / Bhabha Atomic Research Centre (BARC) and National Aluminium Company Limited (NALCO), India have produced an Indian origin bauxite certified reference material (CRM), referred to as BARC-B1201, certified for major (Al₂O₃, Fe₂O₃, SiO₂, TiO₂, loss on ignition - LOI) and trace contents (V₂O₅, MnO, Cr₂O₃, MgO). Characterisation was undertaken by strict adherence to ISO Guides. A method previously developed and validated in our laboratory, using single step bauxite dissolution and subsequent quantitation (of Al₂O₃, Fe₂O₃, SiO₂, TiO₂, V₂O_5, MnO, Cr₂O₃ and MgO) by ICP-AES (SSBD ICP-AES) was used for homogeneity studies and an inter-laboratory comparison exercise (ILCE) of the candidate CRM. LOI was determined by thermo-gravimetric analysis. Property values were assigned after an ILCE with participation from seventeen reputed government and private sector laboratories in India. The CRM was certified for nine property values: Al₂O₃, Fe₂O₃, SiO₂, TiO₂, V₂O_5, MnO, Cr₂O₃, MgO and LOI, which are traceable to SI units.

中文翻译：

---

铝土矿标准物质 (BARC-B1201) 的九种特性值（Al2O3、Fe2O3、SiO2、TiO2、V2O5、MnO、Cr2O3、MgO 和 LOI）的生产可追溯至 SI 单位

印度国家材料成分表征中心（NCCCM）/巴巴原子研究中心（BARC）和印度国家铝业有限公司（NALCO）生产了印度原产铝土矿认证参考材料（CRM），简称BARC-B1201，通过认证主要含量（Al ₂ O ₃、Fe ₂ O ₃、SiO ₂、TiO ₂、烧失量 - LOI）和微量含量（V ₂ O ₅、MnO、Cr ₂ O ₃，氧化镁）。表征是严格遵守 ISO 指南进行的。我们实验室之前开发和验证的方法，使用一步铝土矿溶解和后续定量（Al ₂ O ₃、 Fe ₂ O ₃、 SiO ₂、 TiO ₂、 V ₂ O _{5 、} MnO 、 Cr ₂ O _{3 ）}ICP-AES (SSBD ICP-AES) 用于候选 CRM 的同质性研究和实验室间比较练习 (ILCE)。LOI 通过热重分析测定。在印度 17 个知名政府和私营部门实验室参与的 ILCE 后，对财产价值进行了分配。CRM 获得了九个属性值的认证：Al ₂ O ₃、Fe ₂ O ₃、SiO ₂、TiO ₂、V ₂ O _{5 、} MnO、Cr ₂ O ₃、MgO 和 LOI，这些值可追溯到 SI 单位。