中国造纸学报2025，Vol.40Issue(1)：40-48,9.DOI:10.11981/j.issn.1000-6842.2025.01.40
高温燃烧热导法中木质纤维素主元素分析条件优化
Optimization of Principal Elements Analysis Conditions of Lignocellulose by Response Surface Methodology in Thermal Conductivity Method of High Temperature Combustion
摘要
Abstract
In order to accurately determine lignocellulosic main element content,in this study,based on the analytical conditions for the de-termination of coal main element by thermal conductivity method of high temperature combustion,four significant influencing factors of deter-mination of lignocellulosic main element content were selected by second-order factor method.The effects of significant influencing factors on the determination of lignocellulosic main element content were in descending order as follows:oxygen supply time,oxygen supply flow,sam-ple mass and combustion tube temperature.The test parameters were optimized by single factor experiment and response surface method.The optimum experimental conditions were as follows:sample mass was 30 mg,oxygen supply time was 90 s,oxygen supply flow was 100 mL/min,and combustion tube temperature was 950 ℃.The main element analysis of 6 lignocellulosic standard substances was carried out under the optimum test conditions,and compared with coal test conditions and national standard method.The results showed that the accuracy and precision of the optimized lignocellulose main element analysis conditions were superior to the coal test conditions and the national standard method.The standard deviation of the main element content determination＜0.2,meeting target requirement for standard deviation ≤0.3 in C,H,N,S content determination,and the relative standard deviation(RSD,n=6)was in the range of 0.04％～1.35％.关键词
木质纤维素/主元素分析/高温燃烧热导法/响应面法Key words
lignocellulose/principal elemental analysis/high temperature combustion thermal conductivity method/response surface method分类
轻工业引用本文复制引用
陈康道,汪红梅,石炎军,徐开群..高温燃烧热导法中木质纤维素主元素分析条件优化[J].中国造纸学报,2025,40(1):40-48,9.基金项目
国家重大科学仪器研发项目(2018YFF01014000) （2018YFF01014000）
湖南省学位与研究生教学改革研究项目(2021JGYB133) （2021JGYB133）
湖南省教育厅科学研究重点项目(23A0269). （23A0269）
