標準號：ISO 8658-1997
中文標準名稱：鋁生產用碳素材料 未煅燒和煅燒焦 火焰原子吸收光譜法測定痕量元素
英文標準名稱：Carbonaceous materials for use in the production of aluminium - Green and calcined coke - Determination of trace elements by flame atomic absorption spectroscopy
標準類型：H61
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：H61
國際標準分類號：71.100.10
適用范圍：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.