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Understanding the atmospheric measurement and behavior of perfluorooctanoic acid
Author(s) -
Webster Eva M.,
Ellis David A.
Publication year - 2012
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.1932
Subject(s) - perfluorooctanoic acid , partition coefficient , chemistry , environmental chemistry , passive sampling , correlation coefficient , particle (ecology) , gas phase , artifact (error) , sampling (signal processing) , partition (number theory) , analytical chemistry (journal) , chromatography , statistics , mathematics , physics , detector , optics , oceanography , combinatorics , neuroscience , biology , calibration , geology
The recently reported quantification of the atmospheric sampling artifact for perfluorooctanoic acid (PFOA) was applied to existing gas and particle concentration measurements. Specifically, gas phase concentrations were increased by a factor of 3.5 and particle‐bound concentrations by a factor of 0.1. The correlation constants in two particle–gas partition coefficient ( K QA ) estimation equations were determined for multiple studies with and without correcting for the sampling artifact. Correction for the sampling artifact gave correlation constants with improved agreement to those reported for other neutral organic contaminants, thus supporting the application of the suggested correction factors for perfluorinated carboxylic acids. Applying the corrected correlation constant to a recent multimedia modeling study improved model agreement with corrected, reported, atmospheric concentrations. This work confirms that there is sufficient partitioning to the gas phase to support the long‐range atmospheric transport of PFOA. Environ. Toxicol. Chem. 2012; 31: 2041–2046. © 2012 SETAC

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