Systematic determination of perfluoroalkyl and polyfluoroalkyl substances (PFASs) in outdoor jackets

Gremmel, Christoph; Frömel, Tobias; Knepper, Thomas P.

doi:10.1016/j.chemosphere.2016.06.043

Cited by 57 publications

(46 citation statements)

References 23 publications

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“…Dermal exposure to PFASs can occur through direct contact with consumer products, but so far data are very limited. Both ionic and neutral PFASs have been detected in a wide range of consumer products (Kotthoff et al., ; Liu et al., 2014a) including carpets and textiles such as technical clothing (Gremmel et al., ; Washburn et al., ), waxes and paints (Washburn et al., ), food contact materials (Begley et al., ), non‐stick cookware (Sinclair et al., ) and personal care products including cosmetics (Fujii et al., ; Framtiden i våre hender, online) (see Section 1.3.3). So far very little is known on the dermal absorption of PFASs.…”

Section: Assessmentmentioning

confidence: 99%

Risk to human health related to the presence of perfluoroalkyl substances in food

Schrenk¹,

Bignami²,

Bodin³

et al. 2020

EFS2

330

265

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The European Commission asked EFSA for a scientific evaluation on the risks to human health related to the presence of perfluoroalkyl substances ( PFAS s) in food. Based on several similar effects in animals, toxicokinetics and observed concentrations in human blood, the CONTAM Panel decided to perform the assessment for the sum of four PFAS s: PFOA , PFNA , PFH xS and PFOS . These made up half of the lower bound ( LB ) exposure to those PFAS s with available occurrence data, the remaining contribution being primarily from PFAS s with short half‐lives. Equal potencies were assumed for the four PFAS s included in the assessment. The mean LB exposure in adolescents and adult age groups ranged from 3 to 22, the 95th percentile from 9 to 70 ng/kg body weight (bw) per week. Toddlers and ‘other children’ showed a twofold higher exposure. Upper bound exposure was 4‐ to 49‐fold higher than LB levels, but the latter were considered more reliable. ‘Fish meat’, ‘Fruit and fruit products’ and ‘Eggs and egg products’ contributed most to the exposure. Based on available studies in animals and humans, effects on the immune system were considered the most critical for the risk assessment. From a human study, a lowest BMDL 10 of 17.5 ng/ mL for the sum of the four PFAS s in serum was identified for 1‐year‐old children. Using PBPK modelling, this serum level of 17.5 ng/ mL in children was estimated to correspond to long‐term maternal exposure of 0.63 ng/kg bw per day. Since accumulation over time is important, a tolerable weekly intake ( TWI ) of 4.4 ng/kg bw per week was established. This TWI also protects against other potential adverse effects observed in humans. Based on the estimated LB exposure, but also reported serum levels, the CONTAM Panel concluded that parts of the European population exceed this TWI , which is of concern.

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Section: Assessmentmentioning

confidence: 99%

Risk to human health related to the presence of perfluoroalkyl substances in food

Schrenk¹,

Bignami²,

Bodin³

et al. 2020

EFS2

330

265

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“…[ 3 , 4 ]. During the production and life cycle of the products, a certain fraction of PFASs is inevitably emitted into the environment (e.g., [ 5 ]). Many commonly used PFASs can degrade under environmentally relevant conditions to perfluoroalkyl acids (PFAAs), regarded as final degradation products (e.g., [ 6 ]).…”

Section: Introductionmentioning

confidence: 99%

Short-chain perfluoroalkyl acids: environmental concerns and a regulatory strategy under REACH

et al. 2018

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BackgroundShort-chain PFASs (per- and polyfluoroalkyl substances) are widely used as alternatives to long-chain PFASs. Long-chain PFASs become gradually regulated under REACH (EC No. 1907/2006) and other international regulations, due to having persistent, bioaccumulative and toxic properties and/or being toxic for reproduction. The increasingly used short-chain PFASs are assumed to have a lower bioaccumulation potential. Nonetheless, they have other properties of concern and are already widely distributed in the environment, also in remote regions. The REACH Regulation does not directly address these emerging properties of concern, complicating the implementation of regulatory measures. Therefore, this study illustrates these environmental concerns and provides a strategy for a regulation of short-chain PFASs within REACH.ResultsShort-chain PFASs have a high mobility in soil and water, and final degradation products are extremely persistent. This results in a fast distribution to water resources, and consequently, also to a contamination of drinking water resources. Once emitted, short-chain PFASs remain in the environment. A lack of appropriate water treatment technologies results in everlasting background concentrations in the environment, and thus, organisms are permanently and poorly reversibly exposed. Considering such permanent exposure, it is very difficult to estimate long-term adverse effects in organisms. Short-chain PFASs enrich in edible parts of plants and the accumulation in food chains is unknown. Regarding these concerns and uncertainties, especially with respect to the precautionary principle, short-chain PFASs are of equivalent concern to PBT substances. Therefore, they should be identified as substances of very high concern (SVHC) under REACH. The SVHC identification should be followed by a restriction under REACH, which is the most efficient way to minimize the environmental and human exposure of short-chain PFASs in the European Union.ConclusionDue to an increasing use of short-chain PFASs, an effective regulation is urgently needed. The concerns of short-chain PFASs do not match the “classical” concerns as defined under REACH, but are not of minor concern. Therefore, it is of advantage to clearly define the concerns of short-chain PFASs. This might facilitate the following restriction process under REACH.

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“…Liquid chromatography coupled to mass spectrometry has earlier been used in the identification and determination of PFASs [5,8,[19][20][21][22]. The use of high-resolution mass spectrometry (HRMS) reveals valuable accurate mass information which can be used in the identification of unknown contaminants.…”

Section: Introductionmentioning

confidence: 99%

LC-MS screening of poly- and perfluoroalkyl substances in contaminated soil by Kendrick mass analysis

Bugsel

Zwiener

2020

Anal Bioanal Chem

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The application of contaminated paper sludge on arable land in southwest Germany caused the occurrence of a broad range of poly-and perfluoroalkyl substances (PFASs) on soil. Recently, the dead-end transformation products (TPs) perfluorooctanoic acid and perfluorooctanesulfonic acid were detected in groundwater and drinking water. The precursors and other transformation products mostly remained unknown. Therefore, HRMS screening by Kendrick mass analysis and assignment of homologous series in combination with suspect screening were applied to identify original PFASs and their TPs in four different soil samples from sites where contaminated paper sludge was applied. In total, twelve compound classes comprising more than 61 PFASs could be fully or tentatively identified. The data reveal that contamination mainly originates from polyfluorinated dialkylated phosphate esters (from 4:2/6:2 to 12:2/14:2), N-ethyl perfluorooctane sulfonamide ethanol-based phosphate diesters (only C 8 / C 8) and transformation products of these precursors. Contamination patterns can be attributed to PFASs used for paper impregnation and can vary slightly from site to site. Keywords Poly-and perfluoroalkyl substances. High-resolution mass spectrometry. Screening. Kendrick mass. Soil. Contamination Abbreviations AIF All-ion fragmentation Da Dalton diPAP Polyfluorinated dialkylated phosphate ester diSAmPAP N-Ethyl perfluorooctane sulfonamide ethanolbased phosphate diester EIC Extracted ion chromatogram ESI Electrospray ionization EtFASA N-Ethyl perfluoroalkanesulfonamide EtFASAA N-Ethylperfluoro-1-alkanesulfonamidoacetic acid EtFOSAA N-Ethylperfluoro-1-octanesulfonamidoacetic acid FASA Perfluoroalkanesulfonamide FOSA Perfluorooctanesulfonamide FTOH Fluorotelomer alcohol FTSA Fluorotelomer sulfonic acid FTUCA Fluorotelomer unsaturated carboxylic acid GenX A m m o n i u m 2 , 3 , 3 , 3-t e t r a f l u o r o-2-(heptafluoropropoxy) propanoate HRMS High-resolution mass spectrometry HS Homologous series KM Kendrick mass KMD Kendrick mass defect LC Liquid chromatography LTZ Landwirtschaftliches Technologiezentrum Augustenberg MeFASA N-Methyl perfluoroalkanesulfonamide MeOH Methanol MFE Molecular feature extraction NH 4 Ac Ammonium acetate Published in the topical collection Persistent and Mobile Organic Compounds-An Environmental Challenge with guest editors Torsten C.

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Systematic determination of perfluoroalkyl and polyfluoroalkyl substances (PFASs) in outdoor jackets

Cited by 57 publications

References 23 publications

Risk to human health related to the presence of perfluoroalkyl substances in food

Risk to human health related to the presence of perfluoroalkyl substances in food

Short-chain perfluoroalkyl acids: environmental concerns and a regulatory strategy under REACH

LC-MS screening of poly- and perfluoroalkyl substances in contaminated soil by Kendrick mass analysis

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