Document GK6p0p7ZYvmqZKoobL7d8Mx8V

AR226-3353 1 A Typical Fluorotelomer-Based Polymer ^ueous Dispersion of.... iQ-200 nm Polymeric Particles, > 3 4 ) Ready Biodegradation : Methods 6 8 F(CF2)7! F^CH2CH2OH jrmation F(CF2)7; ;: F==CHCOO- "C7F15 h 2c h 2c o o -" New, Previously Unidentified Transform ation Product F(CF2)7 0 0 - Other fluorinated substances ? (Does Not Indude unidentified minor transformation products} ; Themimcks / science 9  Closed bottles Additional Carbon sources - 0.1% yeast extract and ~ 50 mg*L'1ethanol Inoculum - Industrial sludge adapted 8-2 Telomer B alcohol prior to the test Experimental Duration: 90 days at room temperature Analysis - fluoride selective electrode [F'j - LC/ARC and Q-TOF-MS for 14C-transformiHion products, and LC/MS/MS for PFHA. i d f.\ Themiracles f sconce 19 ime Course of Biotransformation F(CF2)7MCGGH M U FfCFJ^CF^HCOOH ..... Si F(CF2)7i4 F 2GH2COOH To be identified F(CF2)7 C H 2CH2CH2OH mm Unidentified metabolites F(CF2)7f'sCF2CH2CH2OH parent 7 14 28 56 Days after the Initiation th miracles o f science 90 I ime Course of Perfiuorohexanoic Acid F(CF2)5COOH Formation --s-- Test Vessels --o - Abiotic Control Smke Reccvery (%) Day 0 113 Day 7 102 Day14 482? Day28 134 Day 56 177 Day 90 177 (IIIiiiT: The miracles o f science 22 Many Additional . containing transformation products - structural Identification in-progress 14C 0 2 observed lim um HHj product ly or in great amount nor is it fc'Skiiith:. s- if ijr&Xi. Q fikr ( V Y < 2 /0 ^ ion route or rouie(s) where ' f ir A . ! i pi'<o(i;-jOHV'6l.o@i rved in tests conducted ' -;>!:"rfeii'fncv led acid are stable ifer'BtWrus.'twIii: |ii'-'''!-`lC i f l iiis ) S heed to be structurally verified /, eg; $rk&iuimjsyM^ irialion product .' g ISAi g : .;X :i? G > g rm ^ j! Vi riiiM f tllr'id f f riifr.'iVlf ipie -CF2- groups was observed -' ^ f f$ M esuits su itional investigations .... rstand actual environmental partitioning formations in other environmental compartments The miracles o f science 12 Acknowledgements Ning Wang Bogdan Szosek Vladimir Capka Pat Folsom John Gannon The Teiomer Research Program , \ p Themimdes / science 25