木质素

[中文适用范围]： 本方法描述了硫酸盐、碱法和水解木质素中无机物含量的测定方法。该方法适用于从硫酸盐制浆工艺、碱法制浆工艺中分离出的木质素，或通过水解生物质获得的木质素。对于酸式硫酸盐木质素、碱法木质素和水解木质素，无机物含量是根据样品的灰分含量确定的。对于碱式硫酸盐木质素，无机物含量是根据钙、镁、锰、铁、铜、钠和钾含量的总和确定的。 [外文原描述]： This method describes procedures for the determination of inorganics content in kraft, soda, and hydrolysis lignin. The method is applicable to lignin isolated from a kraft pulping process, a soda pulping process, or lignin obtained by hydrolysis of biomass. For kraft lignin in the acid form, soda lignin, and hydrolysis lignin, the inorganics content is determined from the ash content of the sample. For kraft lignin in the base form, the inorganics content is determined from the sum of the contents of calcium, magnesium, manganese, iron, copper, sodium and potassium.