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Standard Test Method for Determination of Carbohydrates in Biomass by Gas Chromatography 用气相色谱法测定生物质中碳水化合物的标准试验方法
发布日期: 2024-05-01
1.1 该试验方法描述了生物质样品中存在的结构碳水化合物的测定,表示为每种脱水糖的烘干样品的质量百分比。 1.2 适用于该程序的样品材料包括硬木材和软木,草本材料,如蚕桑和柳枝稷,农业残留物,如玉米秸秆、小麦秸秆和蔗渣,废纸,如纸板、办公垃圾和新闻纸,酸或碱预处理的生物质,洗涤后不含任何残留酸或碱,以及发酵残留物的固体部分。 1.3 此程序中要分析的样本类型的选项包括: 1.3.1 制备的生物质样品: 1.3.1.1 空气干燥材料-- 结果报告为基于空气干燥样品的烘箱干燥质量的质量百分比。 1.3.1.2 45 °C干燥材料-- 结果以质量百分比的形式报告,基于45 °C干燥样品。 1.3.1.3 冷冻干燥材料-- 结果以基于冷冻干燥样品的烘箱干燥质量的质量百分比来报告。 1.3.2 提取物免费样品-- 结果报告为基于提取样品的烘干质量的质量百分比。 1.4 该标准方法通常不适用于含有可溶性非结构性碳水化合物的样品,除非在分析前将其去除。 1.5 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题(如有)。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 请参阅第节 8. 具体的危险说明。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 结构碳水化合物含量与其他测定法结合使用,以确定生物质样品的总组成。
1.1 This test method describes the determination of structural carbohydrates present in a biomass sample, expressed as the percent mass of an oven-dried sample basis of each anhydrosugar. 1.2 Sample materials suitable for this procedure include hard and softwoods, herbaceous materials, such as sericea and switchgrass, agricultural residues, such as corn stover, wheat straw, and bagasse, wastepaper, such as boxboard, office waste, and newsprint, acid or alkaline-pretreated biomass, washed free of any residual acid or alkali, and the solid fraction of fermentation residues. 1.3 The options for the types of samples to be analyzed in this procedure are: 1.3.1 Prepared Biomass Samples: 1.3.1.1 Air Dried Material— Results are reported as the percent by mass, based on the oven-dried mass of the air-dried sample. 1.3.1.2 45 °C Dried Material— Results are reported as the percent by mass, based on the oven-dried mass of the 45 °C dried sample. 1.3.1.3 Freeze Dried Material— Results are reported as the percent by mass, based on the oven-dried mass of the freeze dried sample. 1.3.2 Extractives-Free Sample— Results are reported as the percent by mass, based on the oven-dried mass of the extracted sample. 1.4 This standard method is generally not suitable for samples that contain soluble, nonstructural carbohydrates unless they are removed prior to analysis. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Section 8 for specific hazards statements. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The structural carbohydrate content is used in conjunction with other assays to determine the total composition of biomass samples.
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归口单位: E48.05
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