NS-EN ISO 12782-4:2012
土壤质量 土壤和材料中成分浸出和形态形成的地球化学模型参数 第4部分:从固体样品中提取腐殖质(ISO 12782-4:2012)
Soil quality — Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials — Part 4: Extraction of humic substances from solid samples (ISO 12782-4:2012)