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Title: Fate and occurrence of alkylphenolic compounds in sewage sludges determined by liquid chromatography tandem mass spectrometry
Authors: Koh, YKK
Chiu, TY
Paterakis, N
Boobis, A
Scrimshaw, MD
Lester, JN
Cartmell, E
Keywords: Alkylphenol;Alkylphenol polyethoxylates;Alkylphenoxy carboxylates;Endocrine disrupter;Sewage sludge
Issue Date: 2009
Publisher: Taylor & Francis
Citation: Environmental Technology, 30(13), 1415 - 1424, 2009
Abstract: An analytical method has been developed and applied to determine the concentrations of the nonionic alkylphenol polyethoxylate surfactants and their metabolites, alkylphenoxy carboxylates and alkyphenols, in sewage sludges. The compounds were extracted with methanol/acetone (1:1 v/v) from sludge, and concentrated extracts were cleaned by silica solid‐phase extraction prior to determination by liquid chromatography tandem mass spectrometry. The recoveries, determined by spiking sewage sludge at two concentrations, ranged from 51% to 89% with method detection limits from 6 µg kg−1 to 60 µg kg−1. The methodology was subsequently applied to sludge samples obtained from a carbonaceous activated sludge plant, a nitrifying/denitrifying activated sludge plant and a nitrifying/denitrifying activated sludge plant with phosphorus removal. Concentrations of nonylphenolic compounds were two to three times higher than their octyl analogues. Long‐chain nonylphenol polyethoxylates (NP3–12EO) ranged from 16 µg kg−1 to 11754 µg kg−1. The estrogenic metabolite nonylphenol was present at concentrations ranging from 33 µg kg−1 to 6696 µg kg−1.
Description: This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2009 Taylor & Francis.
ISSN: 0959-3330
Appears in Collections:Environment
Institute for the Environment

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