Relationship Between Industrial Discharges and Contamination of Raw Water Resources by Perfluorinated Compounds. Part I: Case Study of a Fluoropolymer Manufacturing Plant
Abstract
Perfluorinated compounds (PFCs) have been recognized as global environmental pollutants. They are used in various applications and high levels have been found in water bodies located near highly industrialized sites. In the present study, 10 PFCs were quantitatively determined in water samples collected in the vicinity of a fluoropolymer manufacturing plant and in drinking water resources located downstream. The release of PFHxA and PFNA to the receiving river was estimated at 10 and 4.5 tons/year, respectively. PFHxA (0.058-0.156 μg/L), PFNA (0.013-0.035 μg/L) and PFOA (0.007-0.025 μg/L) were predominant and prevalent in all the studied drinking water resources, confirming with the composition profile the impact of the industrial park release.
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The discharge of PFHxA from a fluoropolymer manufacturing plant in France to the receiving river is estimated at 10 t/yr.
“The discharge of PFHxA from a fluoropolymer manufacturing plant in France to the receiving river is estimated at 10 t/yr (Dauchy et al., 2012).”
From Fluorinated alternatives to long-chain perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkane sulfonic acids (PFSAs) and their potential precursors (2013) · cites this paper as Dauchy et al., 2012
Previous work found raw drinking water sources impacted by fluoropolymer manufacturing were comprised of a median of 79% PFCAs.
“Considering only UCMR3 PFASs, previous work has found raw drinking water sources impacted by fluoropolymer manufacturing were comprised of a median of 79% PFCAs (Dauchy et al. 2012), compared to the median value of 100% in UCMR3 surface water samples with detections.”
From Evaluation of a national data set for insights into sources, composition, and concentrations of per- and polyfluoroalkyl substances (PFASs) in U.S. drinking water (2018) · cites this paper as Dauchy et al. 2012
Cites
Sources, fate and transport of perfluorocarboxylates
Prevedouros, K., Cousins, I. T., Buck, R. C., & Korzeniowski, S. H. (2006) · Environmental Science & Technology · doi:10.1021/es0512475 · Cited by 2,594 · see citing works
Ellis, D. A., Martin, J. W., De Silva, A. O., Mabury, S. A., Hurley, M. D., Sulbaek Andersen, M. P., & Wallington, T. J. (2004) · Environmental Science & Technology · doi:10.1021/es049860w · Cited by 1,000 · see citing works
Perfluorinated Surfactants in Surface and Drinking Waters (9 pp)
Exner, M., & Färber, H. (2006) · Environmental Science and Pollution Research - International · doi:10.1065/espr2006.07.326 · Cited by 507 · see citing works
Growing Concern Over Perfluorinated Chemicals
Renner, R. (2001) · Environmental Science & Technology · doi:10.1021/es012317k · Cited by 417 · see citing works
Quantitative determination of fluorotelomer sulfonates in groundwater by LC MS/MS
Schultz, M. M., Barofsky, D. F., & Field, J. A. (2004) · Environmental Science & Technology · doi:10.1021/es035031j · Cited by 373 · cited 1× · see citing works
“They may also be directly released during manufacture, application, use, and disposal (Lin et al. 2009; Ruan et al. 2010; Schultz et al. 2004; Skutlarek et al. 2006; Yoo et al. 2010).”
BackgroundBiodegradation of Polyfluoroalkyl Phosphates as a Source of Perfluorinated Acids to the Environment
Lee, H., D’eon, J., & Mabury, S. A. (2010) · Environmental Science & Technology · doi:10.1021/es9028183 · Cited by 288 · see citing works
Washington, J. W., Yoo, H., Ellington, J. J., Jenkins, T. M., & Libelo, E. L. (2010) · Environmental Science & Technology · doi:10.1021/es1003846 · Cited by 252 · see citing works
Lin, A. Y., Panchangam, S. C., & Lo, C.-C. (2008) · Environmental Pollution · doi:10.1016/j.envpol.2008.11.033 · Cited by 215 · see citing works
6-2 Fluorotelomer alcohol aerobic biodegradation in soil and mixed bacterial culture
Liu, J., Wang, N., Szostek, B., Buck, R. C., Panciroli, P. K., Folsom, P. W., Sulecki, L. M., & Bellin, C. A. (2009) · Chemosphere · doi:10.1016/j.chemosphere.2009.10.044 · Cited by 213 · see citing works
Emmett, E. A., Zhang, H., Shofer, F. S., Freeman, D. W., Rodway, N. V., Desai, C. S., & Shaw, L. M. J. (2006) · Journal of Occupational and Environmental Medicine · doi:10.1097/01.jom.0000233380.13087.37 · Cited by 197 · see citing works
Biotransformation of 8: 2 fluorotelomer alcohol in soil and by soil bacteria isolates
Liu, J., Lee, L. S., Nies, L. F., Nakatsu, C. H., & Turco, R. F. (2007) · Environmental Science & Technology · doi:10.1021/es0708722 · Cited by 166 · see citing works
Degradability of an Acrylate-Linked, Fluorotelomer Polymer in Soil
Washington, J. W., Ellington, J. J., Jenkins, T. M., Evans, J. J., Yoo, H., & Hafner, S. C. (2009) · Environmental Science & Technology · doi:10.1021/es9002668 · Cited by 152 · see citing works
Higgins, C. P., & Luthy, R. G. (2007) · Environmental Science & Technology · doi:10.1021/es062449j · Cited by 147 · see citing works
National Screening Study on 10 Perfluorinated Compounds in Raw and Treated Tap Water in France
Boiteux, V., Dauchy, X., Rosin, C., & Munoz, J.-F. (2012) · Archives of Environmental Contamination and Toxicology · doi:10.1007/s00244-012-9754-7 · Cited by 147 · see citing works
Self-citationYoo, H., Washington, J. W., Ellington, J. J., Jenkins, T. M., & Neill, M. P. (2010) · Environmental Science & Technology · doi:10.1021/es100390r · Cited by 93 · see citing works
Ruan, T., Wang, Y., Wang, T., Zhang, Q., Ding, L., Liu, J., Wang, C., Qu, G., & Jiang, G. (2010) · Environmental Science & Technology · doi:10.1021/es101507s · Cited by 65 · see citing works
Fate of fluorotelomer acids in a soil–water microcosm
Myers, A. L., & Mabury, S. A. (2010) · Environmental Toxicology and Chemistry · doi:10.1002/etc.211 · Cited by 30 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Wang, Z., Cousins, I. T., Scheringer, M., & Hungerbühler, K. (2013) · Environment International · doi:10.1016/j.envint.2013.08.021 · Cited by 924 · see citing works
Li, F., Duan, J., Tian, S., Ji, H., Zhu, Y., Wei, Z., & Zhao, D. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122506 · Cited by 707 · see citing works
Wang, Z., Cousins, I. T., Scheringer, M., & Hungerbuehler, K. (2015) · Environment International · doi:10.1016/j.envint.2014.11.013 · Cited by 627 · see citing works
Du, Z., Deng, S., Chen, Y., Wang, B., Huang, J. G., Wang, Y., & Yu, G. (2014) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2014.12.037 · Cited by 323 · see citing works
Per- and polyfluorinated substances (PFASs): Environmental challenges
Krafft, M. P., & Riess, J. G. (2015) · Current Opinion in Colloid & Interface Science · doi:10.1016/j.cocis.2015.07.004 · Cited by 294 · see citing works
Wang, Z., Cousins, I. T., Scheringer, M., Buck, R. C., & Hungerbühler, K. (2014) · Environment International · doi:10.1016/j.envint.2014.04.006 · Cited by 242 · see citing works
Adu, O., Ma, X., & Sharma, V. K. (2023) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2023.130805 · Cited by 236 · see citing works
Guelfo, J. L., & Adamson, D. T. (2018) · Environmental Pollution · doi:10.1016/j.envpol.2018.01.066 · Cited by 216 · see citing works
“As discussed, environmental samples with higher percentages of PFCAs have been attributed to sources including fluoropolymer manufacturing, landfills, and WWTP effluent (Ahrens et al. 2009; Arvaniti and Stasinakis 2015; Bach et al. 2017; Dauchy et al. 2012; Houtz et al. 2016; Oliaei et al. 2013; Weber et al. 2017), wh…”
BackgroundResultInfluentialLin, H., Niu, J., Xu, J., Haiou, H., Li, D., Yue, Z., & Feng, C. (2013) · Environmental Science & Technology · doi:10.1021/es4034414 · Cited by 207 · see citing works
Dauchy, X., Boiteux, V., Bach, C., Colin, A., Hémard, J., Rosin, C., & Munoz, J.-F. (2016) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2016.10.130 · Cited by 195 · see citing works
Self-citationConcentration profiles of per- and polyfluoroalkyl substances in major sources to the environment
Dasu, K., Xia, X., Siriwardena, D., Klupinski, T. P., & Seay, B. (2022) · Journal of Environmental Management · doi:10.1016/j.jenvman.2021.113879 · Cited by 175 · see citing works
Sznajder‐Katarzyńska, K., Surma, M., & Cieślik, I. (2019) · Journal of Chemistry · doi:10.1155/2019/2717528 · Cited by 172 · see citing works
Perfluorinated alkyl substances (PFASs) in northern Spain municipal solid waste landfill leachates
Fuertes, I., Gómez-Lavín, S., Elizalde, M. P., & Urtiaga, A. M. (2016) · Chemosphere · doi:10.1016/j.chemosphere.2016.10.072 · Cited by 160 · see citing works
Guelfo, J. L., Korzeniowski, S. H., Mills, M. A., Anderson, J. K., Anderson, R. H., Arblaster, J. A., Conder, J., Cousins, I. T., Dasu, K., Henry, B. J., et al. (2021) · Environmental Toxicology and Chemistry · doi:10.1002/etc.5182 · Cited by 151 · see citing works
Munoz, G., Giraudel, J.-L., Botta, F., Lestremau, F., Dévier, M.-H., Budzinski, H., & Labadie, P. (2015) · Science of The Total Environment · doi:10.1016/j.scitotenv.2015.02.043 · Cited by 144 · see citing works
Babut, M., Labadie, P., Simonnet-Laprade, C., Munoz, G., Roger, M. C., Ferrari, B. J. D., Budzinski, H., & Sivade, E. (2017) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2017.06.111 · Cited by 132 · see citing works
Heydebreck, F., Tang, J., Xie, Z., & Ebinghaus, R. (2016) · Environmental Science & Technology · doi:10.1021/acs.est.6b03213 · Cited by 131 · see citing works
Occurrence of perfluorinated compounds in raw water from New Jersey public drinking water systems
Post, G. B., Louis, J. B., Lippincott, R. L., & Procopio, N. A. (2013) · Environmental Science & Technology · doi:10.1021/es402884x · Cited by 130 · see citing works
Shan, G., Wei, M., Zhu, L. Y., Liu, Z., & Zhang, Y. (2014) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2014.05.005 · Cited by 106 · see citing works
Munoz, G., Duy, S. V., Labadie, P., Botta, F., Budzinski, H., Lestremau, F., Liu, J., & Sauvé, S. (2016) · Talanta · doi:10.1016/j.talanta.2016.02.021 · Cited by 100 · see citing works
Bach, C., Boiteux, V., Hémard, J., Colin, A., Rosin, C., Munoz, J.-F., & Dauchy, X. (2016) · Journal of Chromatography A · doi:10.1016/j.chroma.2016.04.025 · Cited by 91 · see citing works
Self-citationMunschy, C., Bely, N., Pollono, C., & Aminot, Y. (2019) · Chemosphere · doi:10.1016/j.chemosphere.2019.04.205 · Cited by 80 · see citing works
Guelfo, J. L., Marlow, T., Klein, D. M., Savitz, D. A., Frickel, S., Crimi, M., & Suuberg, E. M. (2018) · Environmental Health Perspectives · doi:10.1289/ehp2727 · Cited by 73 · see citing works
Simonnet-Laprade, C., Budzinski, H., Babut, M., Ménach, K. L., Munoz, G., Lauzent, M., Ferrari, B. J. D., & Labadie, P. (2019) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2019.05.461 · Cited by 75 · see citing works
Khalil, C., Hageh, C. A., Korfali, S. I., & Khnayzer, R. S. (2018) · Chemosphere · doi:10.1016/j.chemosphere.2018.05.151 · Cited by 67 · see citing works
Bach, C., Dauchy, X., Boiteux, V., Colin, A., Hemard, J., Sagres, V., Rosin, C., & Munoz, J.-F. (2017) · Environmental Science and Pollution Research · doi:10.1007/s11356-016-8243-3 · Cited by 66 · see citing works
Self-citationBertin, D., Ferrari, B. J. D., Labadie, P., Sapin, A., Garric, J., Budzinski, H., Houde, M., & Babut, M. (2014) · Environmental Pollution · doi:10.1016/j.envpol.2014.02.018 · Cited by 63 · see citing works
Zhang, Y., Zhou, Y., Dong, R., Song, N., Hong, M., Li, J., Yu, J. Y., & Kong, D. (2023) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2023.133270 · Cited by 56 · see citing works
Urtiaga, A. M., Gómez-Lavín, S., & Soriano, Á. (2022) · Journal of environmental chemical engineering · doi:10.1016/j.jece.2022.107900 · Cited by 53 · see citing works
Dauchy, X. (2023) · Chemosphere · doi:10.1016/j.chemosphere.2023.139407 · Cited by 47 · see citing works
Self-citationGanesan, S., & Vasudevan, N. (2016) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2016.05.023 · Cited by 47 · see citing works
Pulicharla, R., Proulx, F., Behmel, S., Sérodes, J. B., & Rodríguez, M. J. (2020) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2020.141748 · Cited by 47 · see citing works
Liu, Z., Xu, C., Johnson, A. C., Sun, X., Wang, M., Xiong, J., Chen, C. Q., Wan, X. Y., Ding, X., & Ding, M. (2022) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2022.154413 · Cited by 45 · see citing works
Oyetade, O. A., Varadwaj, G. B. B., Nyamori, V. O., Jonnalagadda, S. B., & Martincigh, B. S. (2018) · Reviews in Environmental Science and Bio/Technology · doi:10.1007/s11157-018-9479-9 · Cited by 43 · see citing works
Zhang, Y., Zhang, Y., Klaassen, C. D., & Cheng, X. (2017) · Toxicological Sciences · doi:10.1093/toxsci/kfx237 · Cited by 40 · see citing works
Jin, H., Shan, G., Zhu, L. Y., Sun, H., & Luo, Y. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.7b06241 · Cited by 38 · see citing works
Ingold, V., Kämpfe, A., & Ruhl, A. S. (2023) · Eco-Environment & Health · doi:10.1016/j.eehl.2023.08.004 · Cited by 39 · see citing works
Bian, R., Stubbings, W. A., Li, F., Wu, F., & Wang, S. (2025) · ACS ES&T Water · doi:10.1021/acsestwater.4c00828 · Cited by 36 · see citing works
Yamada, A., Bemrah, N., Veyrand, B., Pollono, C., Merlo, M., Desvignes, V., Sirot, V., Marchand, P., Berrébi, A., Cariou, R., et al. (2014) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2014.01.089 · Cited by 35 · see citing works
Bertin, D., Labadie, P., Ferrari, B. J. D., Sapin, A., Garric, J., Geffard, O., Budzinski, H., & Babut, M. (2016) · Chemosphere · doi:10.1016/j.chemosphere.2016.04.006 · Cited by 35 · see citing works
Carrillo-Abad, J., Pérez-Herranz, V., & Urtiaga, A. M. (2018) · Journal of Applied Electrochemistry · doi:10.1007/s10800-018-1180-8 · Cited by 34 · see citing works
Mourier, B., Labadie, P., Desmet, M., Grosbois, C., Raux, J., Debret, M., Copard, Y., Pardon, P., Budzinski, H., & Babut, M. (2019) · Environmental Pollution · doi:10.1016/j.envpol.2019.07.079 · Cited by 34 · see citing works
Adeogun, A. O., Chukwuka, A. V., Ibor, O. R., Asimakopoulos, A. G., Zhang, J., & Arukwe, A. (2024) · Environmental Pollution · doi:10.1016/j.envpol.2024.123575 · Cited by 29 · see citing works
Yamada, A., Bemrah, N., Veyrand, B., Pollono, C., Merlo, M., Desvignes, V., Sirot, V., Oseredczuk, M., Marchand, P., Cariou, R., et al. (2014) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf501113j · Cited by 29 · see citing works
Tang, W.-Q., Wang, T., Miao, J.-W., Tan, H., Zhang, H., Guo, T.-Q., Chen, Z., Wu, C., Mo, L., Mai, B., et al. (2024) · Environmental Research · doi:10.1016/j.envres.2024.120590 · Cited by 26 · see citing works
He, A., Liang, Y., Li, J., Zhou, Z., Li, F., Li, Z., Wang, Y., & Jiang, G. (2025) · Environmental Science & Technology · doi:10.1021/acs.est.4c14478 · Cited by 25 · see citing works
Jia, Y., Li, Y., Kang, S., Li, C., Munoz, G., Hao, S., Xiao, F., Zhi, Y., Liu, C., & Zhang, C. (2025) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2025.140195 · Cited by 25 · see citing works
Rusconi, M., Marziali, L., Stefani, F., Valsecchi, S. M., Bettinetti, R., Mazzoni, M., Rosignoli, F., & Polesello, S. (2015) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2015.08.086 · Cited by 17 · see citing works
Zhao, N., Zhao, M., Liu, W., & Jin, H. (2021) · Environmental Pollution · doi:10.1016/j.envpol.2021.116475 · Cited by 16 · see citing works
Infant formula and baby food as a source of perfluoroalkyl substances for infants
Mikołajczyk, S., Warenik-Bany, M., & Pajurek, M. (2022) · Environmental Pollution · doi:10.1016/j.envpol.2022.120810 · Cited by 15 · see citing works
Cimpean, I. A., Paun, I. C., Pirvu, F., Iancu, V. I., & Chiriac, F. L. (2025) · Journal of Xenobiotics · doi:10.3390/jox15030081 · Cited by 12 · see citing works
Broers, H. P., Kivits, T., Sültenfuß, J., ten Harkel, M. J., & van Vliet, M. (2024) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2024.176344 · Cited by 11 · see citing works
Recognition, distribution, and toxicities of novel per- and polyfluoropolyether carboxylic acids
Lai, G., Dai, J., & Sheng, N. (2023) · Chinese Science Bulletin (Chinese Version) · doi:10.1360/tb-2023-0288 · Cited by 10 · see citing works
Herlory, O., Briand, M. J., Munaron, D., Boissery, P., Giraud, A., Marchand, P., & Bouchoucha, M. (2023) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2024.116419 · Cited by 8 · see citing works
Yamazaki, E., Lalwani, D., Thaker, P., Taniyasu, S., Hanari, N., Kumar, N., & Yamashita, N. (2025) · Chemosphere · doi:10.1016/j.chemosphere.2025.144068 · Cited by 7 · see citing works
Miller, A. J., Kleemann, K., Glüge, J., Lohmann, R., Cousins, I. T., Herzke, D., Miller, M. F., Rensmo, A., Trier, X., Wang, Z., et al. (2026) · Environmental Science & Technology · doi:10.1021/acs.est.5c18001 · Cited by 10 · see citing works
Chakravarty, S., & Poluri, K. M. (2025) · Journal of Water Process Engineering · doi:10.1016/j.jwpe.2025.108825 · Cited by 7 · see citing works
Nduka, J. K., Alluwo, C. J., Offor, C. C., & Eboh-Ajoku, O. I. (2025) · Environmental Science Advances · doi:10.1039/d5va00424a · Cited by 6 · see citing works
Bertin, D., Ferrari, B. J. D., Labadie, P., Sapin, A., Avelar, D. D. S., Beaudouin, R., Péry, A. R. R., Garric, J., Budzinski, H., & Babut, M. (2017) · Ecotoxicology and Environmental Safety · doi:10.1016/j.ecoenv.2017.12.011 · Cited by 7 · see citing works
Sana, T., Chowdhury, M. I., Panneerselvan, L., & Megharaj, M. (2025) · Environmental Challenges · doi:10.1016/j.envc.2025.101103 · Cited by 3 · see citing works
de Assunção, T. D. O. G., Kelmer, G. A. R., & Pereira, R. D. O. (2026) · International Journal of Energy and Water Resources · doi:10.1007/s42108-025-00471-8
Transfert des composés perfluorés des sédiments aux invertébrés benthiques
Bertin, D. (2014) · theses.fr (ABES) · doi:10.70675/bae99f88zb39dz4c43zb35bzb432356e447b
Dimpor, J. J., Ansah, R. O., & Kusi, J. (2026) · Journal of Hazardous Materials Advances · doi:10.1016/j.hazadv.2026.101194
Dry battery electrode processing: Advances, challenges, and future outlook
Ahniyaz, A., Holst, A., Subaşı, Y., Schreiber, S., Gerk, J., Pidluzhna, A., Bhattacharijya, D., Etman, A. S., Glans, E., Schellenberger, S., et al. (2026) · Advances in Applied Energy · doi:10.1016/j.adapen.2026.100312
- Authors
- Dauchy, X., Boiteux, V., Rosin, C., & Munoz, J.-F.
- Affiliations
- Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail (FR)
- Corresponding author
- Dauchy, Xavier
- Venue
- Bulletin of Environmental Contamination and Toxicology
- Published
- 2012-06-16
- Volume
- 89
- Issue
- 3
- Pages
- 525-530
- ISSN
- 0007-4861 (ISSN-L)
- 1432-0800
- OpenAlex
- W4236985313
- Cited by
- 66
- References
- 17
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 4 · 2023: 6 · 2022: 3 · 2021: 3 · 2020: 1 · 2019: 6 · 2018: 6 · 2017: 4 · 2016: 8 · 2015: 3 · 2014: 8 · 2013: 3
- FWCI
- 3.57
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Bulletin of Environmental Contamination and Toxicology (publishedVersion)
- HAL (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chemical Analysis and Environmental Impact
- Keywords
- perfluorinated compounds, industrial discharge, raw water contamination, drinking water resources, perfluorohexanoic acid, PFNA, perfluorooctanoic acid, PFOS, PFHxS, PFOSA
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