PMID: 15378998Sep 24, 2004Paper

Responses of periphyton and invertebrates to a tetradecyl-pentadecyl sulfate mixture in stream mesocosms

Environmental Toxicology and Chemistry
S E BelangerE M LeBlanc

Abstract

Alkyl sulfates (AS) are anionic surfactants widely used in household and personal cleansing applications. Aquatic toxicity of AS under laboratory conditions indicated effects at relatively low concentrations (50-230 microg/L) for some sensitive species. A comprehensive stream mesocosm study of an AS mixture composed of tetra- (C14) and pentadecyl (C15) chain lengths was conducted to better understand effects on microbial and macroinvertebrate populations and communities. A 56-d exposure of AS was performed at concentrations ranging from 57 to 419 microg/L (analytically confirmed exposures) and was accompanied by detailed investigations of periphyton community function (autotrophy, heterotrophy, and metabolism of test chemical), periphyton structure (algal population and community dynamics based on taxonomic identity), and invertebrate structure (benthic abundance, drift, and insect emergence patterns based on taxonomic identity). A no-observed-effect-concentration (NOEC) of 222 microg/L was concluded for several individual algal and invertebrate species based on univariate statistical analyses. An apparent energetic subsidy from C14-15AS at the highest concentrations of 222 to 419 microg/L was observed and tied to changes in mi...Continue Reading

Citations

Jan 17, 2007·Analytical and Bioanalytical Chemistry·Sergi SabaterMechthild Schmitt-Jansen
Jun 28, 2005·Ecotoxicology and Environmental Safety·Scott E BelangerE Bozso
Apr 17, 2012·Environmental Pollution·Miguel Cañedo-ArgüellesNarcís Prat
Sep 29, 2011·The Science of the Total Environment·Yves PerrodinEvens Emmanuel
Aug 30, 2014·Critical Reviews in Environmental Science and Technology·Christina Cowan-EllsberryKathleen Stanton

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