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Standard
| GB/T 11957-2001 Determination of yield of humic acids in coal (English Version) |
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Detail of GB/T 11957-2001
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Introduction of GB/T 11957-2001
本标准包括两种测定煤中腐植酸产率的方法，即容量法和残渣法（前者为仲裁方法），并规定了测定用的试剂、仪器设备、测定步骤、结果计算和精密度。本标准适用于褐煤、低变质程度烟煤和风化煤。
Contents of GB/T 11957-2001