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Levels of Volatile Methyl Siloxanes in Outdoor Air

  • Eva GallegoEmail author
  • Pilar Teixidor
  • Francisco Javier Roca
  • José Francisco Perales
Chapter
  • 66 Downloads
Part of the The Handbook of Environmental Chemistry book series (HEC, volume 89)

Abstract

Field data showing volatile methyl siloxane (VMS) concentrations in the atmosphere is still limited. Outdoor air concentrations are highly conditioned by population, being VMS values much higher in urban locations than in remote regions, generally in the range of ng m−3, one to three orders of magnitude lower than other volatile organic compounds commonly found in the atmosphere. Cyclic VMS (cVMS) are the most abundant compounds, with concentrations up to 2–3 orders of magnitude higher than those of the linear VMS (lVMS). This abundance is related to the large production and use of cVMS globally. In urban areas, lVMS are generally in the range of 1–20 ng m−3. On the other hand, cVMS present much higher concentrations, ranging from a few hundred to several thousand ng m−3. A limited number of studies evaluating VMS in outdoor air include background and rural locations. Background regions generally present VMS levels one order of magnitude lower than those usually found in urban areas, with lVMS concentrations between 0.01 and 1 ng m−3. In contrast, cVMS concentrations range from 1 to 100 of ng m−3. In the Arctic, lVMS are seldom observed, but cVMS are usually found in the range of 0.1 and 4 ng m−3. The regulation and establishment of air quality criterions for VMS are still very limited worldwide. Evaluations regarding human and environmental exposure to these compounds would be mandatory in the future, as well as the establishment of air quality standards.

Keywords

Air quality Cyclic volatile methyl siloxanes Linear volatile methyl siloxanes Outdoor air Volatile methyl siloxanes 

References

  1. 1.
    Wang DG, Norwood W, Alaee M, Byer JD, Brimble S (2013) Review of recent advances in research on the toxicity, detection, occurrence and fate of cyclic volatile methyl siloxanes in the environment. Chemosphere 93:711–725Google Scholar
  2. 2.
    Gaj K, Pakuluk A (2015) Volatile methyl siloxanes as potential hazardous air pollutants. Pol J Environ Stud 24:937–943Google Scholar
  3. 3.
    Rücker C, Kümmerer K (2015) Environmental chemistry of organosiloxanes. Chem Rev 115:466–524Google Scholar
  4. 4.
    Environment Canada (2008) Screening assessment for the challenge octamethylcyclotetrasiloxane (D4). Chemical abstracts service registry number 556-67-2, Health CanadaGoogle Scholar
  5. 5.
    Environment Canada (2008) Screening assessment for the challenge decamethylcyclopentasiloxane (D5). Chemical abstracts service registry number 541-02-6, Health CanadaGoogle Scholar
  6. 6.
    Environment Canada (2008) Screening assessment for the challenge dodecamethylcyclohexasiloxane (D6). Chemical abstracts service registry number 540-97-6, Health CanadaGoogle Scholar
  7. 7.
    Brooke DN, Crookes MJ, Gray D, Robertson S (2009) Environmental risk assessment report: decamethylcyclopentasiloxane. Environmental Agency of England and Wales, BristolGoogle Scholar
  8. 8.
    Brooke DN, Crookes MJ, Gray D, Robertson S (2009) Environmental risk assessment report: octamethylcyclotetrasiloxane. Environmental Agency of England and Wales, BristolGoogle Scholar
  9. 9.
    Dudzina T, von Goetz N, Bogdal C, Biesterbos JWH, Hungerbühler K (2014) Concentrations of cyclic volatile methylsiloxanes in European cosmetics and personal care products: prerequisite for human and environmental exposure assessment. Environ Int 62:86–94Google Scholar
  10. 10.
    Xu S, Wania F (2013) Chemical fate, latitudinal distribution and long-range transport of cyclic volatile methylsiloxanes in the global environment: a modelling assessment. Chemosphere 93:835–843Google Scholar
  11. 11.
    Biesterbos JWH, Beckmann G, van Wel L, Anzion RBM, von Goetz N, Dudzina T, Roeleveld N, Ragas AMJ, Russel FGM, Scheepers PTJ (2015) Aggregate dermal exposure to cyclic siloxanes in personal care products: implications for risk assessment. Environ Int 74:231–239Google Scholar
  12. 12.
    Capela D, Alves A, Homem V, Santos L (2016) From the shop to the drain – volatile methylsiloxanes in cosmetics and personal care products. Environ Int 92-93:50–62Google Scholar
  13. 13.
    Dodson RE, Nishioka M, Standley LJ, Perovich LJ, Brody JG, Rudel RA (2012) Endocrine disruptors and asthma-associated chemicals in consumer products. Environ Health Persp 120:935–943Google Scholar
  14. 14.
    Nørgaard AW, Jensen KA, Janflet C, Lauritsen FR, Clausen PA, Wolkoff P (2009) Release of VOCs and particles during use of nanofilm spray products. Environ Sci Technol 43:7824–7830Google Scholar
  15. 15.
    Pieri F, Katsoyannis A, Martellini T, Hughes D, Jones KC, Cincinelli A (2013) Occurrence of linear and cyclic volatile methyl siloxanes in indoor air samples (UK and Italy) and their isotopic characterization. Environ Int 59:363–371Google Scholar
  16. 16.
    Yucuis RA, Stainer CO, Hornbuckle KC (2013) Cyclic siloxanes in air, including identification of high levels in Chicago and distinct diurnal variation. Chemosphere 92:905–910Google Scholar
  17. 17.
    van Egmond R, Sparham C, Hastie C, Gore D, Chowdhury N (2013) Monitoring and modelling of siloxanes in a sewage treatment plant in the UK. Chemosphere 93:757–765Google Scholar
  18. 18.
    Balducci C, Perilli M, Romagnoli P, Cecinato A (2012) New developments in emerging organic pollutants in the atmosphere. Environ Sci Pollut Res 19:1875–1884Google Scholar
  19. 19.
    Kim J, Mackay D, Whelan MJ (2018) Predicted persistence and response times of linear and cyclic volatile methylsiloxanes in global and local environments. Chemosphere 195:325–335Google Scholar
  20. 20.
    Mackay D, Cowan-Ellsberry CE, Powel DE, Woodburn KB, Xu S, Kozerski GE, Kim J (2015) Decamethylcyclopentasiloxane (D5) environmental sources, fate, transport, and routes of exposure. Environ Toxicol Chem 34:2689–2702Google Scholar
  21. 21.
    Panagopoulos D, MacLeod M (2018) A critical assessment of the environmental fate of linear and cyclic volatile methylsiloxanes using multimedia fugacity models. Environ Sci Process Impacts 20:183–194Google Scholar
  22. 22.
    Xu L, Shi Y, Cai Y (2013) Occurrence and fate of volatile siloxanes in a municipal wastewater treatment plant of Beijing, China. Water Res 47:715–724Google Scholar
  23. 23.
    Genualdi S, Harner T, Cheng Y, MacLeod M, Hansen KM, van Egmond R, Shoeib M, Lee SC (2011) Global distribution of linear and cyclic volatile methyl siloxanes in air. Environ Sci Technol 45:3349–3354Google Scholar
  24. 24.
    McLachlan MS, Kierkegaard A, Hansen KM, van Egmond R, Christensen JE, Skjøth CA (2010) Concentrations and fate of decamethylcyclopentasiloxane (D5) in the atmosphere. Environ Sci Technol 44:5365–5370Google Scholar
  25. 25.
    Capela D, Ratola N, Alves A, Homem V (2017) Volatile methylsiloxanes through wastewater treatment plants – a review of levels and implications. Environ Int 102:9–29Google Scholar
  26. 26.
    Whelan MJ, Estrada E, van Egmond R (2004) A modelling assessment of the atmospheric fate of volatile methyl siloxanes and their reaction products. Chemosphere 57:1427–1437Google Scholar
  27. 27.
    Kierkegaard A, McLachlan MS (2013) Determination of linear and cyclic volatile methylsiloxanes in air at a regional background site in Sweden. Atmos Environ 80:322–329Google Scholar
  28. 28.
    Mojsiewicz-Pieńkowska K, Krenczkowska D (2018) Evolution of consciousness of exposure to siloxanes – review of publications. Chemosphere 191:204–217Google Scholar
  29. 29.
    SCCS (Scientific Committee on Consumer Safety) (2010) Opinion on cyclomethicone octamethylcyclotetrasiloxane (cyclotetrasiloxane, D4) and decamethylcyclopentasiloxane (cyclopentasiloxane, D5). https://ec.europa.eu/health/scientific_committees/consumer_safety/docs/sccs_o_029.pdf. Accessed 22 Jan 2018
  30. 30.
    Cousins AP, Brorström-Lundén E, Hedlund B (2012) Prioritizing organic chemicals for long-term air monitoring by using empirical monitoring data – application to data from the Swedish screening program. Environ Monit Assess 184:4647–4654Google Scholar
  31. 31.
    European Commission (2016) Proposal for a Council Decision on the submission, on behalf of the European Union, of a proposal for the listing of additional chemicals in Annex A, B and/or C to the Stockholm Convention on Persistent Organic Pollutants, BrusselsGoogle Scholar
  32. 32.
    ECHA (2015) Opinion on persistency and bioaccumulation of octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) according to a MSC mandate. Helsinki, Member State CommitteeGoogle Scholar
  33. 33.
    He B, Rhodes-Brower S, Miller MR, Munson AE, Germolec DR, Walker VR, Korach KS, Meade BJ (2003) Octamethylcyclotetrasiloxane exhibits estrogenic activity in mice via ERα. Toxicol Appl Pharm 192:254–261Google Scholar
  34. 34.
    Jean PA, Plotzke KP (2017) Chronic toxicity and oncogenicity of octamethylcyclotetrasiloxane (D4) in the Fischer 344 rat. Toxicol Lett 279:75–97Google Scholar
  35. 35.
    Warner NA, Evenset A, Christensen G, Gabrielsen GW, Borgå K, Leknes H (2010) Volatile siloxanes in the European arctic: assessment of sources and spatial distribution. Environ Sci Technol 44:7705–7710Google Scholar
  36. 36.
    Krogseth IS, Kierkegaard A, McLachlan MS, Breivik K, Hansen KM, Schlabach M (2013) Occurrence and seasonality of cyclic volatile methyl siloxanes in Arctic air. Environ Sci Technol 47:502–509Google Scholar
  37. 37.
    McGoldrick DJ, Chan C, Drouillard KG, Keir MJ, Clark MG, Backus SM (2014) Concentrations and trophic magnification of cyclic siloxanes in aquatic biota from the Western Basin of Lake Erie, Canada. Environ Poll 186:141–148Google Scholar
  38. 38.
    Xu L, Shi Y, Liu N, Cai Y (2015) Methyl siloxanes in environmental matrices and human plasma/fat from both general industries and residential areas in China. Sci Total Environ 505:454–463Google Scholar
  39. 39.
    Schøyen M, Øxnevad S, Hjermann D, Mund C, Böhmer T, Beckmann K, Powell DE (2016) Levels of siloxanes (D4, D5, D6) in biota and sediments from the Inner Oslofjord, Norway, 2011–2014. In: The SETAC Europe 26th annual meeting, Nantes, 26 May 2016Google Scholar
  40. 40.
    Xu L, Shi Y, Wang T, Dong Z, Su W, Cai Y (2012) Methyl siloxanes in environmental matrices around a siloxane production facility, and their distribution and elimination in plasma of exposed population. Environ Sci Technol 46:11718–11726Google Scholar
  41. 41.
    Clarke BO, Smith SR (2011) Review of ‘emerging’ organic contaminants in biosolids and assessment of international research priorities for the agricultural use of biosolids. Environ Int 37:226–247Google Scholar
  42. 42.
    Farré M, Kantiani L, Petrovic M, Pérez S, Barceló D (2012) Achievements and future trends in the analysis of emerging organic contaminants in environmental samples by mass spectrometry and bioanalytical techniques. J Chromatogr A 1259:86–99Google Scholar
  43. 43.
    Genualdi S, Harner T (2012) Rapidly equilibrating micrometer film sampler for priority pollutants in air. Environ Sci Technol 46:7661–7668Google Scholar
  44. 44.
    Yucuis R (2013) Cyclic siloxanes in air including identification of high levels in Chicago and distinct diurnal variation. Master’s thesis, University of IowaGoogle Scholar
  45. 45.
    USEPA (2016) Receipt of information under the Toxic substances control act. https://www.regulations.gov/document?D=EPA-HQ-OPPT-2012-0209-0106. Accessed 22 Jan 2018
  46. 46.
    USEPA (2014) Enforceable consent agreement for environmental testing for Octamethylcyclotetrasiloxane (D4) (CASRN 556-67-2). Docket No. EPA-HQ-OPPT-2012-0209. https://www.epa.gov/sites/production/files/2015-01/documents/signed_siloxanes_eca_4-2-14.pdf. Accessed 22 Jan 2018
  47. 47.
    USEPA (2014) Consent agreements and testing consent orders: octamethylcyclotetrasiloxane (D4); export. https://www.regulations.gov/document?D=EPA-HQ-OPPT-2012-0209-0067. Accessed 22 Jan 2018
  48. 48.
    ECHA (2016) Committee for socio-economic analysis concludes on restricting D4 and D5. https://www.echa.europa.eu/-/committee-for-socio-economic-analysis-concludes-on-restricting-d4-and-d5. Accessed 19 Jan 2018
  49. 49.
    Cheng Y, Shoeib M, Ahrens L, Harner T, Ma J (2011) Wastewater treatment plants and landfills emit volatile methyl siloxanes (VMSs) to the atmosphere: investigations using a new passive air sampler. Environ Pollut 159:2380–2386Google Scholar
  50. 50.
    Ahrens L, Harner T, Shoeib M (2014) Temporal variations of cyclic and linear volatile methylsiloxanes in the atmosphere using passive samplers and high-volume air samplers. Environ Sci Technol 48:9374–9381Google Scholar
  51. 51.
    Buser AM, Kierkegaard A, Bogdal C, MacLeod M, Scheringer M, Hungerbühler K (2013) Concentrations in ambient air and emissions of cyclic volatile methylsiloxanes in Zurich, Switzerland. Environ Sci Technol 47:7045–7051Google Scholar
  52. 52.
    Companioni-Damas EY, Santos FJ, Galceran MT (2014) Linear and cyclic methylsiloxanes in air by concurrent solvent recondensation-large volume injection-gas chromatography-mass spectrometry. Talanta 118:245–252Google Scholar
  53. 53.
    Gallego E, Perales JF, Roca FJ, Guardino X, Gadea E (2017) Volatile methyl siloxanes (VMS) concentrations in outdoor air of several Catalan urban areas. Atmos Environ 155:108–118Google Scholar
  54. 54.
    Varaprath S, Stutts DH, Kozerski GE (2006) A primer on the analytical aspects of silicones at trace levels-challenges and artifacts – a review. Silicon Chem 3:79–102Google Scholar
  55. 55.
    Warner NA, Kozerski G, Durham J, Koerner M, Gerhards R, Campbell R, McNett DA (2013) Positive vs. false detection: a comparison of analytical methods and performance for analysis of cyclic volatile methylsiloxanes (cVMS) in environmental samples from remote regions. Chemosphere 93:749–756Google Scholar
  56. 56.
    Krogseth IS, Zhang X, Lei YD, Wania F, Breivik K (2013) Calibration and application of a passive air sampler (XAD-PAS) for volatile methyl siloxanes. Environ Sci Technol 47:4463–4470Google Scholar
  57. 57.
    Lamaa L, Ferronato C, Fine L, Jaber F, Chovelon JM (2013) Evaluation of adsorbents for volatile methyl siloxanes sampling based on the determination of their breakthrough volume. Talanta 115:881–886Google Scholar
  58. 58.
    Tran TM, Kannan K (2015) Occurrence of cyclic and linear siloxanes in indoor air from Albany, New York, USA, and its implications for inhalation exposure. Sci Total Environ 511:138–144Google Scholar
  59. 59.
    Arnold M, Kajolinna T (2010) Development of on-line measurement techniques for siloxanes and other trace compounds in biogas. Waste Manag 30:1011–1017Google Scholar
  60. 60.
    Grümping R, Mikolajczak D, Hirner AV (1998) Determination of trimethylsilanol in the environment by LT-GC/ICP-OES and GC-MS. Fresenius J Anal Chem 361:133–139Google Scholar
  61. 61.
    Hayeck N, Temime-Roussel B, Gligorovski S, Mizzi A, Gemayel R, Tlili S, Maillot P, Pic N, Vitrani T, Poulet I, Wortham H (2015) Monitoring of organic contamination in the ambient air of microelectronic clean room by proton-transfer reaction/time-of flight/mass spectrometry (PTR-ToF-MS). Int J Mass Spectrom 392:102–110Google Scholar
  62. 62.
    Lee JH, Jia C, Kim YD, Kim HH, Pham TT, Choi YS, Seo YU, Lee IW (2012) An optimized adsorbent sampling combined to thermal desorption GC-MS method for trimethylsilanol in industrial environments. Int J Anal Chem 2012:1–10Google Scholar
  63. 63.
    Gallego E, Roca FJ, Perales JF, Guardino X, Gadea E (2015) Development of a method for determination of VOCs (including methylsiloxanes) in biogas by TD-GC/MS analysis using Supel™ inert film bags and multisorbent bed tubes. Int J Environ Anal Chem 95:291–311Google Scholar
  64. 64.
    Kierkegaard A, McLachlan MS (2010) Determination of decamethylcyclopentasiloxane in air using commercial solid phase extraction cartridges. J Chromatogr A 1217:3557–3560Google Scholar
  65. 65.
    Shields HC, Fleischer DM, Weschler CJ (1996) Comparisons among VOCs measured in three types of U.S. commercial buildings with different occupant densities. Indoor Air 6:2–17Google Scholar
  66. 66.
    Badjagbo K, Furtos A, Alaee M, Moore S, Sauvé S (2009) Direct analysis of volatile methylsiloxanes in gaseous matrixes using atmospheric pressure chemical ionization-tandem mass spectrometry. Anal Chem 81:7288–7293Google Scholar
  67. 67.
    Herrington JS (2013) Whole air canister sampling coupled with preconcentration GC/MS analysis of part-per-trillion levels of trimethylsilanol in semiconductor cleanroom air. Anal Chem 85:7882–7888Google Scholar
  68. 68.
    Shoeib M, Schuster J, Rauert C, Su K, Smyth S-A, Harner T (2016) Emission of poly and perfluoroalkyl substances, UV-filters and siloxanes to air from wastewater treatment plants. Environ Pollut 218:595–604Google Scholar
  69. 69.
    Kulkarni HV (2012) Occurrence of cyclo-siloxanes in wastewater treatment plants – quantification and monitoring. Thesis, Colorado State UniversityGoogle Scholar
  70. 70.
    Buser A (2013) Siloxanes: emissions, properties and environmental fate. Thesis, ETH ZurichGoogle Scholar
  71. 71.
    Janecheck NJ, Hansen KM, Stainer CO (2017) Comprehensive atmospheric modeling of reactive cyclic siloxanes and their oxidation products. Atmos Chem Phys 17:8357–8370Google Scholar
  72. 72.
    Ratola N, Ramos S, Homem V, Silva JA, Jiménez-Guerrero P, Amigo JM, Santos L, Alves A (2016) Using air, soil and vegetation to assess the environmental behaviour of siloxanes. Environ Sci Pollut Res 23:3273–3284Google Scholar
  73. 73.
    Wang XM, Lee SC, Sheng GY, Chan LY, Fu JM, Li XD, Min YS, Chan CY (2001) Cyclic organosilicon compounds in ambient air in Guangzhou, Macau and Nanhai, Pearl River Delta. Appl Geochem 16:1447–1454Google Scholar
  74. 74.
    Kaj L, Schlabach M, Andersson J, Cousins AP, Schmidbauer N, Brörstrom-Lundén E (2005) Siloxanes in the Nordic environment. Nordic Council of Ministers, CopenhagenGoogle Scholar
  75. 75.
    Hodgson AT, Faulkner D, Sullivan DP, DiBartolomeo DL, Russell ML, Fisk WJ (2003) Effect of outside air ventilation rate on volatile organic compound concentrations in a call center. Atmos Environ 37:5517–5527Google Scholar
  76. 76.
    Kaj L, Andersson J, Cousins AP, Remberger M, Brörstrom-Lundén E (2005) Results from the Swedish national screening programme 2004. Subreport 4: Siloxanes. IVL Swedish Environmental Research Institute, StockholmGoogle Scholar
  77. 77.
    Horii Y, Kannan K (2008) Survey of organosilicone compounds, including cyclic and linear siloxanes, in personal-care and household products. Arch Environ Contam Toxicol 55:701–710Google Scholar
  78. 78.
    Wang R, Moody RP, Koniecki D, Zhu J (2009) Low molecular weight cyclic volatile methylsiloxanes in cosmetic products sold in Canada: implication for dermal exposure. Environ Int 35:900–904Google Scholar
  79. 79.
    Lu Y, Yuan T, Wang W, Kannan K (2011) Concentrations and assessment of exposure to siloxanes and synthetic musks in personal care products from China. Environ Pollut 159:3522–3528Google Scholar
  80. 80.
    Bletsou AA, Asimakopoulos AG, Stasinakis AS, Thomaidis NS, Kannan K (2013) Mass loading and fate of linear and cyclic siloxanes in a wastewater treatment plant in Greece. Environ Sci Technol 47:1824–1832Google Scholar
  81. 81.
    Lee S, Moon H-B, Song G-J, Ra K, Lee W-C, Kannan K (2014) A nationwide survey and emission estimates of cyclic and linear siloxanes through sludge from wastewater treatment plants in Korea. Sci Total Environ 497–498:106–112Google Scholar
  82. 82.
    Li B, Li W-L, Sun S-J, Qui H, Ma W-L, Liu L-Y, Zhang Z-F, Zhu N-Z, Li Y-F (2016) The occurrence and fate of siloxanes in wastewater treatment plant in Harbin, China. Environ Sci Pollut Res 23:13200–13209Google Scholar
  83. 83.
    NILU (Norwegian Institute for Air Research) (2014) Monitoring of environmental contaminants in air and precipitation. Annual report 2013. Norwegian Environment Agency, TrondheimGoogle Scholar
  84. 84.
    NILU (Norwegian Institute for Air Research) (2015) Monitoring of environmental contaminants in air and precipitation. Annual report 2014. Norwegian Environment Agency, TrondheimGoogle Scholar
  85. 85.
    NILU (Norwegian Institute for Air Research) (2016) Monitoring of environmental contaminants in air and precipitation. Annual report 2015. Norwegian Environment Agency, TrondheimGoogle Scholar
  86. 86.
    NILU (Norwegian Institute for Air Research) (2017) Monitoring of environmental contaminants in air and precipitation. Annual report 2016. Norwegian Environment Agency, TrondheimGoogle Scholar
  87. 87.
    Navea JG, Young MA, Xu S, Grassian VH, Stainer CO (2011) The atmospheric lifetimes and concentrations of cyclic methylsiloxanes octamethylcyclotetrasiloxanes (D4) and decamethylcyclopentasiloxane (D5) and the influence of heterogeneous uptake. Atmos Environ 45:3181–3191Google Scholar
  88. 88.
    Atkinson R (1991) Kinetics of the gas-phase reactions of a series of organosilicon compounds with OH and NO3 radicals and O3 at 297 ± 2 K. Environ Sci Technol 25:863–866Google Scholar
  89. 89.
    Markgraf SJ, Wells JR (1997) The hydroxyl radical reaction rate constants and atmospheric reaction products of three siloxanes. In J Chem Kinet 29:445–451Google Scholar
  90. 90.
    Kim J, Xu S (2017) Quantitative structure-reactivity relationships of hydroxyl radical rate constants for linear and cyclic volatile methylsiloxanes. Environ Toxicol Chem 36:3240–3245Google Scholar
  91. 91.
    Lu Y, Yuan T, Yun SH, Wang W, Wu Q, Kannan K (2010) Occurrence of cyclic and linear siloxanes in indoor dust from China, and implications for human exposures. Environ Sci Technol 44:6081–6087Google Scholar
  92. 92.
    Lassen C, Hansen CL, Mikkelsen SH, Maag J (2005) Siloxanes – consumption, toxicity and alternatives. Environmental project no. 1031 2005. Environmental Protection Agency, Danish Ministry of the Environment, DenmarkGoogle Scholar
  93. 93.
    Surita SC, Tansel B (2014) Emergence and fate of cyclic volatile polydimethylsiloxanes (D4, D5) in municipal waste streams: release mechanisms, partitioning and persistence in air, water, soil and sediments. Sci Total Environ 468-469:46–52Google Scholar
  94. 94.
    Tansel B, Surita SC (2014) Differences in volatile methyl siloxane (VMS) profiles in biogas from landfills and anaerobic digesters and energetics of VMS transformations. Waste Manag 34:2271–2277Google Scholar
  95. 95.
    Surita SC, Tansel B (2015) Contribution of siloxanes to COD loading at wastewater treatment plants: phase transfer, removal, and fate at different treatment units. Chemosphere 122:245–250Google Scholar
  96. 96.
    Fijalkowski K, Rorat A, Grobelak A, Kacprzak MJ (2017) The presence of contaminations in sewage sludge – the current situation. J Environ Manag 203:1126–1136Google Scholar
  97. 97.
    Rasi S (2009) Biogas composition and upgrading to biomethane. Thesis, University of JyväskyläGoogle Scholar
  98. 98.
    Rasi S, Lehtinen J, Rintala J (2010) Determination of organic silicon compounds in biogas from wastewater treatment plants, landfills, and co-digestion plants. Renew Energ 35:2666–2673Google Scholar
  99. 99.
    Environment Canada (2010) Consultation document. Octamethylcyclotetrasiloxane (D4). Chemical abstracts service registry number 556-67-2Google Scholar
  100. 100.
    Norwegian Environment Agency (2018) List of priority substances. http://www.environment.no/List-of-Priority-Substances/. Accessed 26 Feb 2018
  101. 101.
    Danish Ministry of the Environment (2014) Siloxanes (D3, D4, D5, D6, HMDS). Evaluation of health hazards and proposal of health-based quality criterion for ambient air. Environmental project no. 1531. CopenhagenGoogle Scholar
  102. 102.
    Tetra Tech (2017) Air quality existing conditions report. Eastern Ontario waste handling facility landfill expansion. Lafleche Environmental, BouchervilleGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Eva Gallego
    • 1
    Email author
  • Pilar Teixidor
    • 2
  • Francisco Javier Roca
    • 1
  • José Francisco Perales
    • 1
  1. 1.Laboratori del Centre de Medi AmbientEscola Tècnica Superior d’Enginyeria Industrial de Barcelona (ETSEIB), Universitat Politècnica de Catalunya (LCMA-UPC)BarcelonaSpain
  2. 2.Centres Científics i TecnològicsUniversitat de Barcelona (CCiTUB)BarcelonaSpain

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