硫酸盐法制浆黑液硅含量测定的新方法  

A New Measurement Method of Silica Content in Sulfate Pulping Black Liquor

作　　者：徐永建[1] 胡忠宇[1] 张永奇[1] 王润宇[1] 朱振峰[2] 张鼎军 

机构地区：[1]陕西科技大学造纸工程学院,陕西省造纸技术及特种纸品开发重点实验室,教育部轻化工助剂重点实验室,陕西西安710021 [2]陕西科技大学材料科学与工程博士后流动站,陕西西安710021 [3]贵州赤天化集团纸业股份有限公司,贵州赤水564707

出　　处：《中国造纸》2014年第1期10-14,共5页China Pulp & Paper

基　　金：国家十二五科技支撑计划项目课题(2012BAD23B0201);国家级大学生创新创业训练计划项目(201210708009);国家自然科学基金(20876092);陕西科技大学学科带头人培育计划项目(20876092)的资助

摘　　要：针对传统硅钼蓝分光光度法测定硫酸盐法制浆黑液硅含量时木素及还原性含硫化合物对吸光度的影响，在硅钼蓝分光光度法的基础上，采用甲酸．过氧化氢合成过氧甲酸消解黑液中的木素和还原性物质，消除黑液中木素及还原性物质对硅钼蓝分光光度法测定硫酸盐制浆黑液吸光度的影响。研究表明，相对于传统的硅钼蓝分光光度法，新的方法在测定硫酸盐法制浆黑液时，测定结果更为真实、准确，回收率在99％～102％，具有更好的稳定性，且操作简单，干扰少，适用于硫酸盐法制浆黑液硅含量的分析检测。A new measurement method of silica content in sulfate pulping black liquor was put forward on the basis of comentional silica mo- lybdenum blue spectrophotometry, in which the effect of lignin and reducible sulfur compound in the black liquor on the absorbance values in the silica molybdenum blue spectrophotometry was eliminated by the performic acid resolution method. The analysis results of the new method was more truthful and accurate compared to the traditional silica molybdenum blue spectrophotometry. The recovery of silica content was 99% to 102% used this method. This method had a better stability, easy operation and less disturbance than the traditional method, was suitable for analysis and detection of silica content in sulfate pulping black liquor.

关 键 词：黑液 硅含量 过氧甲酸 分光光度法 

分 类 号：X793[环境科学与工程—环境工程]