Abstract
Siloxanes are a diverse group of materials which may take the form of fluids, elastomers, or resins. This chapter’s focus is on polydimethylsiloxane (PDMS) fluids. Many applications result in the disposal of PDMS fluids with down-the-drain products, which are eventually transported to wastewater treatment plants (WWTPs). The authors summarize the properties and prevalence of these materials, as well as their potential to enter the environment, primarily as a component of wastewater treatment plant sludge. This work examines the ecological fate, effects, and risk of PDMS in water, soil, and sediment.
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Abbreviations
- AA:
-
atomic absorption
- AATS:
-
Ann Arbor Testing Service
- BCF:
-
bioconcentration factor
- cs:
-
centistokes
- D:
-
(CH3)2SiO2/2 unit
- EC50 :
-
median effective concentration
- DMCD:
-
dimethylsilanediol
- EPA:
-
Environmental Protection Agency(U.S.A.)
- GC:
-
gas chromatography
- GPC:
-
gel permeation liquid chromatography
- ICP:
-
inductively coupled plasma
- IR:
-
infrared
- kd :
-
soil-water partition coefficient
- koc :
-
soil-water partition coefficient, normalized to % organic carbon
- LC50 :
-
concentration causing lethality in 50% of the test population
- LT50 :
-
time to 50% lethality in hours
- M:
-
(CH3)3SiO1/2 unit
- Mg/y:
-
mega grams per year
- MS:
-
mass spectrometry
- MW:
-
molecular weight
- NMR:
-
nuclear magnetic resonance
- NOEC:
-
no observable effects concentration
- PDMS:
-
polydimethylsiloxane
- Pow :
-
octanol/water partition coefficient
- PUF:
-
polyurethane foam
- RAM:
-
polyurethane foam
- SIAJ:
-
Silicone Industry Association of Japan
- Q:
-
SiO4/2 unit
- T:
-
(CH3)SiO3/2 unit
- THF:
-
tetrahydrofuran
- TL50 :
-
median lethal concentration
- TSCA:
-
Toxic Substances Control Act (U.S.A.)
- VMS:
-
volatile methylsiloxane
- WWTP:
-
wastewater treatment plant
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Fendinger, N.J., Lehmann, R.G., Mihaich, E.M. (1997). Polydimethylsiloxane. In: Chandra, G. (eds) Organosilicon Materials. The Handbook of Environmental Chemistry, vol 3 / 3H. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68331-5_7
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DOI: https://doi.org/10.1007/978-3-540-68331-5_7
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