摘要
根据苯、甲苯、邻二甲苯、间二甲苯、对二甲苯在拉曼光谱中的特征谱带,建立了煤化工产品粗苯的快速准确的拉曼定量分析方法.分别依次选取991、785、1 052、536、827 cm-处为定量峰,绘制工作曲线,其线性方程的相关系数R分别为0.999 1、0.991 9、0.993 5、0.993 7、0.987 3,线性和精密度良好,对方法的准确度用t-检验法考察,置信区间在95％以内.实样测定回收率为94.60％～ 104.15％.
Based on the characteristic bands of benzene, toluene, o-xylene, m-xylene, p-xylene in Raman spectroscopy, the quantitative analysis of Raman to rapidly and accurately measure the crude benzol in chemical products is established. The working curves are drawn by selecting the wave numbers at 991 cm^-1 ,1 052 cm^-1 ,785 cm-1, 827 cm ^-1 ,536 cm^-1, respectively, as quantitative peaks. The linear equation of the correlation coefficient R is 0. 999 1, 0. 991 9,0. 993 5,0. 993 7,0. 987 3, respectively. The data show good linearity and precision. The accuracy of the method is investigated with t-test, and the confidence intervals are within 95%. Recovery of the sample is 94. 6% - 94. 6%.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第1期169-171,共3页
Modern Chemical Industry
关键词
拉曼光谱
苯
甲苯
二甲苯
粗苯
定量分析
Raman spectroscopy
benzene
toluene
xylene
crude benzol
quantitative analysis
