Document VjdpzmrgNYN9y9anp8xywYpno
AR 226 _ 080
ACTIVATED SLUDGE RESPIRATION INHIBITION TEST
TEST SUBSTANCE
Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a componentof FC-206C a1,n1d,2L,-25,43339,.4,4(,15-,O5c,t6a,n6,e7s.u7l,f8o,n8i8c-ahceipdt,adecafluoro-, potassium salf, CAS# 2705-39-3)
LR-e5m4a3r9k.s:CurreTnhtei3nfMorpmraotdiuocntiinodniclaottensuimtbisera wmiaxstu5r0e1o.fT0h.e73te%stPFsOamSp,le is 7oc6t.yl00su%lfwaattee,r,1.1457%% dhiyedtrhoyxlyenfeoagmleycro,l1b.ut0y5l%etphoelry,o4xy%etuhryelae,ne1.55% sodium monoocylphenyl ether, 0.06% sodium lauryl sulfate, and 0.05% benzotriazole.. cThhaerafcotlelrowiiznegd csounmcmenatrryataipopnlioefsitmopuarimtiixetsu.reDawtiathmianyconmoptleactceulryately reflect the toxicity of the fluorochemical compnent of the test sample..
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Method: 3M Protocol, Reference EAR 11/8/79 GTeLsPt:tyNpoe: Static acute AYneaalrytCiocmapllmeotneidt:ori1n9g8:1 Dissolved oxygen concentrations Statistical methods: Graphed Test organism source: Activated sludge mixed liquor collected from the
Metro Wastewater Treatment Plant, St. Paul, MN
Test condition:
SDiylnutthieotniwcasteewr:agDee:ionNioztedusweadter. Reference and test solution preparation: Astock solutionofthe test substance was created by diluting 0.60 grams of test sample to
100 mL with dilution water. It is not noted exactly how the 1,000
mg/L test solution is prepared from this stock solution.
TNeusmtbveersoseflsc:oncNeonttnroatteidons: 1 plus 1 blank control
TToetmaplesrautsupreen:deNdotsonloitdesd and pH on dayoftesting: Not noted Element Basis: Respiration inhibition as determined by oxygen
consumption.
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RESULTS
Nominal concentrations: Blank control and 1,000 mg/L
Element values:
No acute inhibitory effect on activated sludge respiration rate at 1000 mg/L with a contact timeof 6
minutes.
Element values based on nominal concentrations.
Rsuebmsatraknsc:e rTeemsatriknsg wfiaelsd.coTnhdeucvtaeldueosnrtehpeormtiexdtuarpeplaystdoetshcartimbiexdtuinrethaentdest not the fluorochemical proportion alone.
CThOeNCteLstUsSuIbOstNaSnce exhibited no inhibitory effects at 1000 mg/L over a
contact timeof 6 minutes.
Submitter: 3M Company, Environmental Laboratory, P.O. Box 33331, St. Paul, Minnesota, 55133
DATA QUALITY
Reliability: Kiimisch ranking 3. Testing lacks record of methodology uwsaesd.noTthleonmgeetnhooudgwhtaosdnefoitnaitnivaegleyndceyt-earpmpirnoeivfetdhmeertehmoidg.htTbesetodtuhreartion raedtveenrtsioenetfifmeecst.s tShaatmmpilgehtpuorcitcyurwadusrinnogt ctyhpaircaacltwearsizteedwaatnedrtthreeasttmuednytlacks analytical confirmation of the amountoffiuorochemical proportion in the solution.
REFERENCES
"This study was conducted by the 3M Environmental Laboratory, St Paul, MN, Lab Request number 68125, 1981.
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Last changed: 6/26/00
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Protocol Reference: EAR 11/8/79
Lab request no.: _6F/2 S
Date: _2-0/-8/ analyse: 0. Q.So
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