检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
出 处:《榆林学院学报》2013年第6期27-31,共5页Journal of Yulin University
摘 要:UV光谱分析技术可用于纸张种类的鉴别。在提取纸张成分时,用不同试剂及用同一试剂提取的时间不同所得的测试结果有差异。试验结果表明,用甲醇作提取剂,提取3h所得效果最好。根据紫外可见吸收光谱的波形,波长,一阶导数,二阶导数光谱图进行比对分析,将四种类型,19种样品纸进行了分析鉴别。本研究对实际应用有较大的参考价值。While the paper composition is being recovered, the application of different reagents and dltterentaa ring the recovering time by application of the same reagent leads to different results. Many experiments make it clear that the application of methanol as reagent is the most effective one if the recovering time does not exceed three hours. Based on the wave form and length of the visible absorbing spectrum of ultraviolet ray, the comparison of the figures of the first - order derivative with that of the second - order derivative and their analyzing, four types and 19 kinds of sample paper have been analyzed and identified. This study contains some points referring to the application cases.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.7