2017
Toward a Comprehensive Global Emission Inventory of C-4-C-10 Perfluoroalkanesulfonic Acids (PFSAs) and Related Precursors: Focus on the Life Cycle of C-8-Based Products and Ongoing Industrial Transition
WANG, Zhanyun, Justin M. BOUCHER, Martin SCHERINGER, Ian T. COUSINS, Konrad HUNGERBUHLER et. al.Základní údaje
Originální název
Toward a Comprehensive Global Emission Inventory of C-4-C-10 Perfluoroalkanesulfonic Acids (PFSAs) and Related Precursors: Focus on the Life Cycle of C-8-Based Products and Ongoing Industrial Transition
Autoři
WANG, Zhanyun (756 Švýcarsko), Justin M. BOUCHER (756 Švýcarsko), Martin SCHERINGER (756 Švýcarsko, garant, domácí), Ian T. COUSINS (752 Švédsko) a Konrad HUNGERBUHLER (756 Švýcarsko)
Vydání
ENVIRONMENTAL SCIENCE AND TECHNOLOGY, WASHINGTON, AMER CHEMICAL SOC, 2017, 0013-936X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.653
Kód RIV
RIV/00216224:14310/17:00100157
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000399859700038
Klíčová slova anglicky
PERSISTENT ORGANIC POLLUTANTS; LONG-RANGE TRANSPORT; FLUOROTELOMER-BASED POLYMERS; POLYFLUOROALKYL SUBSTANCES; PERFLUOROOCTANE SULFONATE; PERFLUOROALKYL SUBSTANCES; PERFLUORINATED COMPOUNDS
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 12. 4. 2018 16:09, Ing. Nicole Zrilić
Anotace
V originále
Here a new global emission inventory of C-4-C-10 perfluoroalkanesulfonic acids (PFSAs) from the life cycle of perfluorooctanesulfonyl fluoride (POSF)-based products in 1958-2030 is presented. In particular, we substantially improve and expand the previous frameworks by incorporating missing pieces (e.g., emissions to soil through land treatment, overlooked precursors) and updating parameters (e.g., emission factors, degradation half-lives). In 1958-2015, total direct and indirect emissions of perfluorooctanesulfonic acid (PFOS) are estimated as 1228-4930 tonnes, and emissions of PFOS precursors are estimated as 1230-8738 tonnes and approximately 670 tonnes for x-perfluorooctanesulfonamides/sulfonamido ethanols (xFOSA/Es) and POSF, respectively. Most of these emissions occurred between 1958 and 2002, followed by a substantial decrease. This confirms the positive effect of the ongoing transition to phase out POSF-based products, although this transition may still require substantial time and cause substantial additional releases of PFOS (8-153 tonnes) and xFOSA/Es (4-698 tonnes) in 2016 to 2030. The modeled environmental concentrations obtained by coupling the emission inventory and a global multimedia mass-balance model generally agree well with reported field measurements, suggesting that the inventory captures the actual emissions of PFOS and xFOSA/Es for the time being despite remaining uncertainties. "Our analysis of the key uncertainties and open questions of and beyond the inventory shows that, among others, degradation of side-chain fluorinated polymers in the environment and landfills can be a long-term, (potentially) substantial source of PFOS.
Návaznosti
EF15_003/0000469, projekt VaV |
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LM2015051, projekt VaV |
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