胶束增敏荧光方法测定水中石油类成分及其含量  

Identification and concentration measurement of petroleum in water based on micelle sensitization fluorescence method

作　　者：潘钊[1,2] 王玉田[1,2] 吴希军[1,2] 杨丽丽[1] 

机构地区：[1]燕山大学电气工程学院,秦皇岛066004 [2]河北省测试计量技术及仪器重点实验室,秦皇岛066004

出　　处：《仪器仪表学报》2013年第12期2839-2845,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(61071202);河北省自然科学基金(F2012203189)资助项目

摘　　要：采用胶束荧光增敏方法,以表面活性剂十二烷基硫酸钠作为荧光增敏试剂,测量不同石油类样品在胶束溶液环境中的荧光发射光谱。实验采用的石油类样品在胶束溶液中的浓度在一定范围内与其胶束溶液的荧光峰值强度呈现良好的线性关系,可以解决石油类物质在水中溶解度很低,难以准确测定浓度的问题。在线性范围内,利用柴油、煤油样品的胶束溶液配制得到已知浓度的混合溶液样本集,分别测量各个样本的荧光光谱,构成三维数据矩阵,利用平行因子分析方法,选择适当的因子,准确估计了预测集中各样本中柴油和煤油的浓度。表明平行因子方法可以在一定程度上克服各种石油类物质荧光光谱相似、重叠的影响,实现对混合胶束溶液中石油类物质进行整体的定性与定量测量。In this paper, adopting the mieellar fluorometry sensitization method, taking sodium dodeeyl sulfate, a kind of surfaetant, as the fluorescenee sensitizing reagent, the fluorescence emission spectra of different oil samples in the mieellar solution environment are measured. The concentration of the oil sample in the micellar solution has good lin- ear relationship with its fluorescence peak intensity in a certain range, which can be used to solve the problem of the low water solubility of petroleum substances and the difficulty in accurately determining their concentration. The mixed solution sample set with known concentration is obtained by mixing the micellar solutions of diesel and kero- sene samples in the linear range. The fluorescence spectra of different samples are measured and a three dimensional data matrix is constructed by measuring the fluorescence spectra of different samples. The parallel factor analysis method is adopted to accurately estimate the concentrations of diesel and kerosene of the samples in the prediction set through choosing appropriate factor. Experiment results indicate that the parallel factor （PARAFAC） analysis method can overcome the influences of the similarity and overlap of the fluorescence spectra of various petroleum substances in a certain extent and realize the overall qualitative and quantitative measurement of the petroleum substances in mixed micelles.

关 键 词：胶束 荧光 石油类 平行因子 浓度测量 

分 类 号：X830.2[环境科学与工程—环境工程] O657.3[理学—分析化学]