DIN EN ISO 23470:2018-12 土壤質量-使用三氯化六氨鈷溶液測定有效陽離子交換能力(CEC)和可交換陽離子
Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalttrichloride solution (ISO 23470:2018); German version EN ISO 23470:2018