Comparison of fluorotelomer alcohol emissions from wastewater treatment plants into atmospheric and aquatic environments

Chen, Chengkang; Wang, Jie; Li, Li; Xu, Weijun; Liu, Jianguo

doi:10.1016/j.envint.2020.105718

Cited by 13 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the greater bioaccumulation of sulfonamides (more of the neutral, lipophilic species is available) when compared to homologous PFAS, 114,120 and the volatility of FTOH. [117][118][119] Note, however, that the pK a of polyfluorinated betaines could be higher (B2) and similar increments are expected for fluorotelomer carboxylic acids. Thus, unlike sulfonic acids, the deprotonation extent will vary even under acidic conditions.…”

Section: Discussionmentioning

confidence: 73%

“…Even though n :2FTOH are the most common fluorinated alcohols, 117–119 no experimental p K a could be found for these compounds. Thus, the p K a of 1:1FTOH and 2:1FTOH (Table S11, ESI†) are included in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…These hydrogenated carbons lend stability to the molecule as straight-chain perfluorinated alcohols rapidly decompose in water. 116 Even though n:2FTOH are the most common fluorinated alcohols, [117][118][119] no experimental pK a could be found for these compounds. Thus, the pK a of 1:1FTOH and 2:1FTOH (Table S11, ESI †) are included in Fig.…”

Section: This Journal Is © the Owner Societies 2023mentioning

confidence: 99%

See 2 more Smart Citations

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

Murillo-Gelvez,

Dmitrenko,

Torralba-Sanchez

et al. 2023

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: This Journal Is © the Owner Societies 2023mentioning

confidence: 99%

See 1 more Smart Citation

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

Murillo-Gelvez,

Dmitrenko,

Torralba-Sanchez

et al. 2023

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…This indicates that an increasing number of 6:2 FTOH-based precursors are used as a replacement for longer-chain precursors. Similarly, the abundance of 6:2 FTOH was found to increase in Chinese wastewater and air samples from 2016 to 2017, 50 indicating the shifting trend from 8:2 FTOH to 6:2 FTOH.…”

Section: ■ Results and Discussionmentioning

confidence: 89%

Per- and Polyfluoroalkyl Substances in Outdoor and Indoor Dust from Mainland China: Contributions of Unknown Precursors and Implications for Human Exposure

Wang

Yao

Wang

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

Per- and polyfluoroalkyl substances (PFASs) were analyzed in outdoor (n = 101) and indoor dust (n = 43, 38 paired with outdoors) samples across mainland China. From 2013 to 2017, the median concentration of ∑PFASs in outdoor dust tripled from 63 to 164 ng/g with an elevated contribution of trifluoroacetic acid and 6:2 fluorotelomer alcohol. In 2017, the indoor dust levels of ∑PFASs were in the range 185–913 ng/g, which were generally higher than the outdoor dust levels (105–321 ng/g). Emerging PFASs were found at high median levels of 5.7–97 ng/g in both indoor and outdoor dust samples. As first revealed by the total oxidized precursors assay, unknown perfluoroalkyl acid (PFAA)-precursors contributed 37–67 mol % to the PFAS profiles in indoor dust samples. A great proportion of C8 PFAA-precursors were precursors for perfluorooctanesulfonic acid, while C6 and C4 PFAA-precursors were mostly fluorotelomer based. Furthermore, daily perfluorooctanoic acid (PFOA) equivalent intakes of PFAAs (C4–C12) mixtures via indoor dust were first estimated at 1.3–1.5 ng/kg b.w./d for toddlers at high scenarios, which exceeds the derived daily threshold of 0.63 ng/kg b.w./d. from the European Food Safety Authority (EFSA). On this basis, an underestimation of 56%–69% likely remains without considering potential risks due to the biotransformation of unknown PFAA-precursors.

show abstract

“…Their toxicities vary from aquatic ecotoxicity, endocrine disruption, reproductive and developmental toxicity, neurotoxicity to carcinogenicity, presenting increasingly significant risks to human health and the environment . These new pollutants have been frequently detected in rivers, lakes, coastal waters, soil, wildlife, and human bodies at alarming levels, − but have not been covered in the current monitoring system.…”

Section: Introductionmentioning

confidence: 99%

Managing the Risks of New Pollutants in China: The Perspective of Policy Integration

Xu,

Liu

2023

Environ. Health

Self Cite

View full text Add to dashboard Cite

New pollutants, which have been gaining increasing attention in China in recent years, are largely results of the production, use, and disposal of chemicals that are of great economic value. Managing new pollutants requires a high degree of policy coordination through the life cycle of chemicals and a balanced consideration of multiple social objectives. From the perspective of policy integration, we analyzed the current regulatory regime for managing new pollutants. Major findings include: (1) guiding principles and instruments exist for balancing social, environmental, and economic objectives, which can be used directly or after revision to guide new pollutants management; (2) part of the existing regulations can be used to incorporate new pollutants after revision, while new regulations are badly needed to prevent, minimize, and cleanup new pollutants during the whole process of their production, use, and disposal; and (3) complementary policies such as information-based policies and policies for facilitating research and development are rather weak. Further research and practical efforts should be directed to mainstreaming new pollutants into the existing regulatory regime, developing supplemental policies for managing new pollutants, and designing complementary policies to facilitate the design and implementation of policies for managing new pollutants.

show abstract

Comparison of fluorotelomer alcohol emissions from wastewater treatment plants into atmospheric and aquatic environments

Cited by 13 publications

References 41 publications

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

Per- and Polyfluoroalkyl Substances in Outdoor and Indoor Dust from Mainland China: Contributions of Unknown Precursors and Implications for Human Exposure

Managing the Risks of New Pollutants in China: The Perspective of Policy Integration

Contact Info

Product

Resources

About

Comparison of fluorotelomer alcohol emissions from wastewater treatment plants into atmospheric and aquatic environments

Cited by 13 publications

References 41 publications

pKa prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

pKa prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

Per- and Polyfluoroalkyl Substances in Outdoor and Indoor Dust from Mainland China: Contributions of Unknown Precursors and Implications for Human Exposure

Managing the Risks of New Pollutants in China: The Perspective of Policy Integration

Contact Info

Product

Resources

About

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities

pK_a prediction of per- and polyfluoroalkyl acids in water using in silico gas phase stretching vibrational frequencies and infrared intensities