ISO 8658-1997 铝生产用碳素材料 未煅烧和煅烧焦 火焰原子吸收光谱法测定痕量元素

标准号：ISO 8658-1997
中文标准名称：铝生产用碳素材料 未煅烧和煅烧焦 火焰原子吸收光谱法测定痕量元素
英文标准名称：Carbonaceous materials for use in the production of aluminium - Green and calcined coke - Determination of trace elements by flame atomic absorption spectroscopy
标准类型：H61
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：H61
国际标准分类号：71.100.10
适用范围：This International Standard describes a method for the determination of trace elements in green and calcined coke with an ash content of not greater than 1 % (m/m) and with individual concentrations not greater than the following: Calcium 0,025 % (m/m) Chromium 0,005 % (m/m) Copper 0,025 % (m/m) Iron 0,030 % (m/m) Lead 0,010 % (m/m) Magnesium 0,010 % (m/m) Manganese 0,001 % (m/m) Nickel 0,050 % (m/m) Silicon 0,100 % (m/m) Vanadium 0,100 % (m/m) Zinc 0,004 % (m/m) NOTE — A method for the determination of ash of cokes is given in ISO 8005:1984, Carbonaceous materials used in the production of aluminium — Green and calcined coke — Determination of ash. However, it is essential that the ash produced by that method not be used in the procedure of this International Standard because of the risk of contamination by trace elements.