Ahrens, Lutz
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
- Environment Canada
Sammanfattning
Two passive air sampler (PAS) media were characterized under field conditions for the measurement of per- and polyfluoroalkyl substances (PFASs) in the atmosphere. The PASs, consisting of polyurethane foam (PUF) and sorbent-impregnated PUF (SIP) disks, were deployed for over one year in parallel with high volume active air samplers (HV-AAS) and low volume active air samplers (LV-AAS). Samples were analyzed for perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkane sulfonic acids (PFSAs), fluorotelomer alcohols (FTOHs), fluorotelomer methacrylates (FTMACs), fluorotelomer acrylates (FTACs), perfluorooctane sulfonamides (FOSAs), and perfluorooctane sulfonamidoethanols (FOSEs). Sampling rates and the passive sampler medium (PSM)-air partition coefficient (KPSM-A) were calculated for individual PFASs. Sampling rates were similar for PFASs present in the gas phase and particle phase, and the linear sampling rate of 4 m(-3) d(-1) is recommended for calculating effective air sample volumes in the SIP-PAS and PUF-PAS for PFASs except for the FOSAs and FOSEs in the PUF-PAS. SIP disks showed very good performance for all tested PFASs while PUF disks were suitable only for the PFSAs and their precursors. Experiments evaluating the suitability of different isotopically labeled fluorinated depuration compounds (DCs) revealed that C-13(8)-perfluorooctanoic acid (PFOA) was suitable for the calculation of site-specific sampling rates. Ambient temperature was the dominant factor influencing the seasonal trend of PFASs.
Nyckelord
air sampling; calibration; seasonal trends; passive air sampling; SIP disk; PUF disk; PFASs; PFCs; PFSAs; PFCAs; FTOHs; FTCAs; FOSAs; FOSEs
Publicerad i
Environmental Science and Technology
2013, volym: 47, nummer: 24, sidor: 14024-14033
SLU författare
UKÄ forskningsämne
Analytisk kemi
Miljövetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1021/es4048945
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/53644