SIS SS 02 71 07-1990 土工试验．有机质含量．比色法

标准号：SIS SS 02 71 07-1990
中文标准名称：土工试验．有机质含量．比色法
英文标准名称：Geotechnical tests — Organic content — Colorimetric method
发布日期：1990/12/5 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard concerns a method for determining the organic content of soils through rapid wet combustion as described in Walkley & Black (1934), followed by a colori-metric test using a light filter for wavelengths of about 620 μm.The method is applicable for an organic content of less than 60 %. The colorimeter gives a slight reading even for completely inorganic matter. Empirically, therefore, organic content determined by the colorimetric method should be reduced by 0,2 %.