標準號：ISO 16720-2005
中文標準名稱：土質.連續分析用試樣的凍干法預處理
英文標準名稱：Soil quality - Pretreatment of samples by freeze-drying for subsequent analysis
標準類型：Z18
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z18
國際標準分類號：13.080.20
適用范圍：This International Standard specifies a method for pretreatment of soil samples by freeze-drying for subsequent analysis. This International Standard is applicable to soil samples for subsequent determination of elements or organic compounds recognized as non-volatile under freeze-drying conditions. Generally, this International Standard can also be applied to samples from sludges and sediments. This method is also applicable as a first step for the determination of dry matter (or water) content, for instance in the case of samples with high water content.