장은희 (표준과학연구원, 충남대학교)

백송이 (표준과학연구원)

장은희 (표준과학연구원, 충남대학교)

김정권 (충남대학교)

백송이 (표준과학연구원)

Particulate matter(PM) generated from combustion processes in boilers, automobiles, power plants, and other sources primarily consists of ionic components such as sulfates, nitrates, and ammonia, as well as metals and carbon compounds. Among these carbon compounds, polycyclic aromatic hydrocarbons (PAHs), which are harmful organic compounds resulting from incomplete combustion, are included. PAHs refer to hydrocarbons with two or more benzene rings. Among them, PAHs with 4 to 6 benzene rings, including benz(a)pyrene, which is classified as a carcinogen, are particularly hazardous. These substances are predominantly found in particulate matter in the atmosphere, thereby increasing the overall risk of particulate matter. In South Korea, a monitoring network for harmful air pollutants is operated to assess the nationwide contamination levels and trends of PAHs in particulate matter. Efficient extraction and accurate analysis of PAHs from PM are essential for environmental monitoring and public health assessment. This study focuses on optimizing the extraction efficiency of PAHs from PM using Accelerated Solvent Extraction (ASE). The primary objective of this research is to evaluate and compare the extraction efficiencies of various solvents in the different temperatures, extraction times, and cycle numbers. The study utilized three Certified Reference Materials (CRMs) for PM, developed by the Korea Research Institute of Standards and Science: Urban PM (CRM 109-02-004), On-road PM (CRM 109-02-006), and Subway Station PM (CRM 109-02-005). Since the concentrations and distributions of PAHs and matrix effects can vary among different PM types, the study also investigated whether extraction efficiency differs among the types, providing a comprehensive basis for assessing extraction performance across diverse PM types.

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