caa a22 4500 467905096 CHVBK 20180406152831.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s10661-005-9048-x doi (NATIONALLICENCE)springer-10.1007/s10661-005-9048-x ASsessment Of Alcohol Ethoxylate Surfactants And Fatty Alcohols Mixtures In River Sediments And Prospective Risk Assessment [Elektronische Daten] [Scott Dyer, Hans Sanderson, Scott Waite, Remi Compernolle, Bradford Price, Allen Nielsen, Alex Evans, Alvaro Decarvalho, Dennis Hooton, Andrew Sherren] A feasible and relatively readily available analytical method was adapted for the assessment of alcohol ethoxylates (AE) and fatty alcohols (FA) in sediments. This study illustrates the simultaneous measurement of 38 of 114 possible alcohol ethoxylate ethoxymers (AE) and fatty alcohols (FA) found in commercially important AE products. We predicted toxicity for all identified fractions, as well as the total mixture toxicity, relative to three exposure scenarios via sewage treatment plants (STP) for these widely used chemicals in consumer products and hence generate a preliminary environmental risk screening for AE and FA in sediments. The method is based on derivatization of solvent or solid-phase extracts with 2-fluoro-N-methylpyridinium p-toluenesulfonate (Pyr+). The derivatized extracts were analyzed with liquid chromatography/mass spectrometry (LC/MS) operating in the positive ion electrospray mode. The extraction efficiency of AE and FA in three different sediments of varying composition was evaluated with spike-recovery studies, ranging from 64% to 80%. The detection limits for individual ethoxymers typically ranged from 1 to 5ngg−1on a dry weight basis. The mean limit of detection (LOD) was 6ngg−1and the median LOD was 3ngg−1. AE and FA in sediments were found to be stable for two weeks if preserved with 3% (v/v) formalin and stored at 4-6∘C. Based on equilibrium partitioning, background concentrations of AE and FA were predicted to be below concentrations known to elicit chronically toxic effects. Total worst case mixture toxicities for all AE ethoxymers combined with FA were predicted to result in a risk quotient less than 0.6. Activated sludge treatment (STP) significantly reduced the release of total AE and FA by four-fold, suggesting that the total mixture risk quotient would be < 0.15 for sediment dependent organisms. Springer Science+Business Media, Inc., 2006 alcohol ethoxylate nationallicence consumer product nationallicence derivatization nationallicence detergent nationallicence fatty alcohol nationallicence liquid chromatography mass spectrometry nationallicence mixture toxicity nationallicence sediments nationallicence AE : Elongation nationallicence EO : ethoxylate nationallicence FA : fatty alcohol nationallicence R : alkyl hydrocarbon chain nationallicence SPE : solid phase extraction nationallicence HPLC : high-performance liquid chromatography nationallicence LC/MS : liquid chromatography/mass spectrometry nationallicence MS/MS : mass spectrometry/mass spectrometry nationallicence pyr+ : 2-fluoro-N-methylpyridinium p-toluenesulfonate nationallicence S/N : signal to noise nationallicence UV : ultraviolet nationallicence LOD : limit(s) of detection nationallicence LOQ : limit(s) of quantitation nationallicence kg : kilogram(s) nationallicence g : gram(s) nationallicence mg : milligrams nationallicence μg : micrograms nationallicence ng : nanogram(s) nationallicence L : liter(s) nationallicence mL : milliliter(s) nationallicence μL : microliters nationallicence M : mol(s) nationallicence v : volume nationallicence wt : weight nationallicence min : minute(s) nationallicence C : Celsius nationallicence G : gravity nationallicence X : time(s) nationallicence STD : standard deviation nationallicence n : replicate(s) nationallicence STP : sewage treatment plant nationallicence Kd : distribution constant nationallicence f oc : fraction organic carbon nationallicence K oc : coefficient organic carbon nationallicence EqP : equilibrium partitioning nationallicence PEC : predicted environmental concentration nationallicence PNEC : predicted no effect concentration nationallicence TU : toxic unit nationallicence Dyer Scott US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Sanderson Hans US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Waite Scott US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Compernolle Remi US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Price Bradford US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Nielsen Allen US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Evans Alex US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Decarvalho Alvaro US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Hooton Dennis US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Sherren Andrew US Soap and Detergent Association, Director, Environment Safety, Washington, US aut Environmental Monitoring and Assessment Kluwer Academic Publishers 120/1-3(2006-09-01), 45-63 0167-6369 120:1-3<45 2006 120 10661 https://doi.org/10.1007/s10661-005-9048-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-005-9048-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dyer Scott US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Sanderson Hans US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Waite Scott US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Compernolle Remi US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Price Bradford US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Nielsen Allen US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Evans Alex US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Decarvalho Alvaro US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Hooton Dennis US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 700 1- Sherren Andrew US Soap and Detergent Association, Director, Environment Safety, Washington, US aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 120/1-3(2006-09-01), 45-63 0167-6369 120:1-3<45 2006 120 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer