GB/T 11957-2001
ActiveDetermination of yield of humic acids in coal
煤中腐植酸产率测定方法
Application Summary AI generated
This standard specifies the method for determining the yield of humic acids extracted from coal, including procedures for sample preparation, extraction, and gravimetric analysis. It is applied in the coal mining and chemical industries to evaluate the quality of lignite, weathered coal, and peat for use in producing humic acid-based fertilizers, drilling fluids, and industrial additives. The standard ensures consistent testing protocols for resource assessment and quality control in coal processing and utilization.
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