title: Determination of decamethylcyclopentasiloxane in river water and final effluent by headspace gas chromatography/mass spectrometry.
abstract: A method is described for the analysis of decamethylcyclopentasiloxane (D(5)) in river water and treated waste water using headspace gas chromatography/mass spectrometry. Internal standard addition to samples and field blanks was carried out in the field to provide both a measure of recovery and to prevent any exposure of samples to laboratory air, which contained background levels of D(5). Measured levels of D(5) were typically in the range <10-29ngL(-1) in the River Great Ouse (UK) with slightly higher levels in the River Nene (UK). The measured concentration of D(5) in treated waste water varied between 31 and 400ngL(-1), depending on the type of treatment process employed.
authors.affiliation: Safety & Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK. chris.sparham@unilever.com
authors.forename: Chris
authors.initials: C
authors.lastname: Sparham
authors.forename: Roger
authors.initials: R
authors.lastname: Van Egmond
authors.forename: Sean
authors.initials: S
authors.lastname: O'Connor
authors.forename: Colin
authors.initials: C
authors.lastname: Hastie
authors.forename: Mick
authors.initials: M
authors.lastname: Whelan
authors.forename: Rakesh
authors.initials: R
authors.lastname: Kanda
authors.forename: Oliver
authors.initials: O
authors.lastname: Franklin
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D012015:Reference Standards; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry*; D012833:Siloxanes / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D012833:Siloxanes; D014874:Water Pollutants, Chemical; C114768:decamethylcyclopentasiloxane