環境モニタリングのための迅速捕集前処理法の開発

平成13年度 成果一覧

坂本哲夫(東京大学 環境安全研究センター助教授)
松村幸彦(東京大学 環境安全研究センター助教授 現 広島大学工学研究科助教授)

要旨

A selective extraction by means of two-step supercritical CO2 extraction was developed. This technique is based on the difference between the recoveries of organic compounds depending on fluid conditions such as temperature and pressure. Compounds with relatively high vapor pressure (alkanes) are easily extracted even at low temperature and pressure, whereas PAHs with very low vapor pressure are extracted only in the case of high temperature and pressure. Employing this difference, two-step extraction was successfully applied for selective extraction of alkanes and PAHs from coal flyash. Furthermore, a combined system of SFE and on-line mass-selective detection was devised and developed. This system is expected to be a powerful analytical technique with features of high-throughput and low-contamination.

キーワード

Supercritical Fluid Extraction, Selective Extraction, Fly Ash, SP