偏最小二乘光度法同时测定白油中单环及多环芳烃含量  

Simultaneous determination of monocyclic and polycyclic aromatic hydrocarbons in white oil by partial least squares regression method

作　　者：唐军[1] 韩晓强[2] 栾利新 

机构地区：[1]新疆大学理化测试中心,新疆乌鲁木齐830046 [2]新疆油田公司采油工艺研究院,新疆克拉玛依834000 [3]中国石油克拉玛依石化分公司炼油化工研究院,新疆克拉玛依834000

出　　处：《化学试剂》2011年第6期531-532,536,共3页Chemical Reagents

摘　　要：白油中存在着单环芳烃和多环芳烃物质,其吸收光谱相互重叠,在测定波长260～300 nm范围内,采用偏最小二乘回归(PLS)法同时测定白油中单环芳烃和多环芳烃的含量,当残差平方和PRESS达到最小值时,确定PLS回归中二组分的主成分数均为4,分析结果表明,样品中单环芳烃和多环芳烃的回收率在93.73%～101.31%,线性范围分别在0.99×10-1～5.05×10-1mg/g和0.47×10-1～2.47×10-1mg/g之间,取得了满意的分析结果。Partial least squares regression（PLS） method is used to measure monocyclic and polycyclic aromatic hydrocarbons in white oil of the seriously overlapped absorbance spectra.The spectra from 260 to 300 nm were scanned.The least PRESS was used to determine the factor number,then the factor of components were four in PLS.The result shows that the average recovery of each component is all in the range from 93.73% to 101.31% and the linear ranges are 0.99×10-1～5.05×10-1 mg/g,0.47×10-1～2.47×10-1 mg/g,respectively.Each component obtains satisfactory result.

关 键 词：白油 芳烃 偏最小二乘回归 

分 类 号：O657.32[理学—分析化学]