Development of a comprehensive semi-quantitative method that does not depend on the presence or absence of standard substances of PFASs

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K23364
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 1101:Environmental analyses and evaluation, environmental conservation measure and related fields
• Research Institution: Kyoto University
• Principal Investigator: Yukioka Satoru 京都大学, 地球環境学堂, 研究員 (30883699)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: ペルおよびポリフルオロアルキル物質 / 網羅的半定量法 / 精密質量分析

Outline of Final Research Achievements

The objective of this study was to develop an exhaustive semi-quantitative method for PFASs independent of the presence or absence of standards. River water and spring water samples in the Hija River basin around a firefighting training facility in Okinawa Prefecture were collected in November 2020. In this study, the following two studies were conducted on this sample: 1. screening analysis method for fire-extinguisher-related PFASs using LC-MS/MS, and 2. suspect screening analysis using LC/IM-QTOF-MS with composition formula. As a result, quantitative information on known substances was obtained, and 81 substances were extracted as candidates to be targeted by screening analysis using accurate mass spectrometry, showing the validity of its constancy.

Free Research Field

環境鑑識学

Academic Significance and Societal Importance of the Research Achievements

当該分野において、これまで約30種類のPFASsのみを対象に汚染実態を議論してきたのに対し、本研究では80種類以上のPFASsを対象とした網羅的汚染解析に挑戦した。さらに、本法は他汚染物質にも適用可能であり、管理・評価対象となる汚染物質が増加傾向にある現状を打開することができる。これらは、環境残留性有機汚染物質の全体像の解明への新たな道筋を示すことができ、今後の化学物質管理・評価の発展につながる。