Development of Analytical Method for the Analysis of 35 PAHs in Airborne Particulate Using ASE and Isotope Dilution GC-MS

• Main Author: 李迪雯
• Other Authors: 吳家誠
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/97529199516891087028

碩士 === 國立臺灣師範大學 === 化學學系 === 85 === Accelerated Solvent Extraction has become a prominent sample preparation technique for the extraction of organic pollutants from environmental samples (e.g., airborne particulate matter, soil, and sediment) in recent years. The aim of this research is to develop a new sample pretreatment technique for 35 important polynuclear aromatic hydrocarbons, PAHs, in airborne particulate. The efficiency and recovery are compared with those from Soxhiet extraction. Airborne particulates are prepared by spiking standard solution on filter. The standard airborne particulate sample thus obtained were used to establish ASE experimental parameters, and study the effect of matrix on recovery. Another goal of this research aims at the development of a new analytical scheme using isotope dilution GC-Mass spectrometry(IDMS) for analyzing ASE-pretreated samples, the urban dust. Five appropriate deuterated internal standards are used in conjunction with IDMS to determine contents of PAHs in SRM-1649. With this technique, one can determine the contents of PAHs in urban dust with good precision and accuracy. This method is successfully applied to airborne particulate samples collected in Taipei metropolitan area. Results indicate pollution of PAHs in Taipei city is apparently low.