气相色谱内标法测定胶黏剂中的苯、甲苯、二甲苯  

Determination of Benzene,Toluene and Xylene in Adhesives by Using Internal Standard Methods with Gas Chromatography

作　　者：韩术鑫[1] 马虹[1] 李剑[1] 周延生[1] 王兴民[1] 

机构地区：[1]山东省分析测试中心,济南250014

出　　处：《化学分析计量》2014年第2期35-38,共4页Chemical Analysis And Meterage

基　　金：山东省分析测试中心科技发展基金

摘　　要：以气相色谱内标法测定胶黏剂中苯、甲苯、二甲苯，在试剂空白和样品组分不干扰内标物的情况下，5种目标物线性相关系数均达0.99999；测定结果不受高黏度样品进样量的影响，相对标准偏差为0.06%～0.30%（n=9）；在40～600 mg/L的3个浓度水平内，加标回收率在98.93%～100.98%之间。内标法测量精密度与准确度均优于外标法。Benzenes in adhesives were determined by internal standard methods with gas chromatography. The results showed that the linear correlation coefficients for 5 samples could get 0.999 99 as no substances of reagent blank and samples disturbing the internal substance. The results were not affected by dosages of samples with high viscosity, the relative standard deviations of which were 0.06%-0.30%（n=9）, and the recovery rates were 98.93%-100.98%as benzenes concentrations ranged from 40 to 600 mg/L. The internal standard method is better than the external standard method in both precision and accuracy.

关 键 词：气相色谱法 内标法 胶黏剂 苯系物 

分 类 号：O657.7[理学—分析化学]