標準號：BS 7755-3.3-1995
中文標準名稱：土質.化學方法.使用氯化鋇溶液對有效陽離子交換能量和基本飽和級的測定
英文標準名稱：Soil quality. Chemical methods. Determination of effective cation exchange capacity and base saturation level using barium chloride solution
標準類型：Z18
發布日期：1995/2/15 12:00:00
實施日期：1995/2/15 12:00:00
中國標準分類號：Z18
國際標準分類號：13.080.10
適用范圍：This International Standard specifies a method for the determination of the cation exchange capacity (CEC) at the pH of the soil and of the determination of the content of exchangeable sodium, potassium, calcium and magnesium in soil. This International Standard is applicable to all types of air-dried soil samples; pretreatment according to ISO 11464 is recommended. NOTES 1 The method described suffers from interference from calcium as calcite or gypsum in the sample. Also, the pres-ence of any soluble salts gives values for the exchangeable cations that are higher than the actual exchangeable