ISO 6350:2024 木质素 干物质含量的测定 烘箱干燥法和冷冻干燥法

标准编号：ISO 6350:2024

中文名称：木质素 干物质含量的测定 烘箱干燥法和冷冻干燥法

英文名称：Lignins — Determination of dry matter content — Oven-drying and freeze-drying methods

发布日期：2024-02

标准范围

本文件描述了通过烘箱干燥和冷冻干燥测定木质素的干物质含量的方法。所述方法适用于从硫酸盐、有机溶剂、苏打和亚硫酸盐制浆工艺中分离的所有类型的木质素，以及通过生物质的酶或酸水解获得的木质素。然而，烘箱干燥方法不适用于碱形式(也称为钠形式)的牛皮纸木质素。这两种方法仅适用于固体形式的木质素。

This document describes methods for the determination of the dry matter content of lignins by oven-drying and freeze-drying. The methods are applicable to all types of lignins isolated from kraft, organosolv, soda, and sulfite pulping processes, and to lignin obtained by enzymatic or acid hydrolysis of biomass. However, the oven-drying method is not applicable to kraft lignins in the base form, also referred to as sodium form. Both methods are applicable only to lignins in the solid form.

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