Joint action of binary mixtures of cetyltrimethyl ammonium chloride and aromatic hydrocarbons on Chlorella vulgaris

Fei GE, Yin XU, Runliang ZHU, Fangqin YU, Menjun ZHU, Ming Hung WONG

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21 Citations (Scopus)

Abstract

The joint action of binary mixtures of cetyltrimethyl ammonium chloride (CTAC), a cationic surfactant, and six aromatic hydrocarbons (AHs) on green algae Chlorella vulgaris was investigated. In single systems, inhibition efficiency of CTAC on the growth of algae was much higher than that of AHs (benzene, toluene, phenol, nitrobenzene, phenanthrene and fluoranthene). In combined systems, the toxicity of CTAC was enhanced by low concentrations of AHs. 96 h EC₅₀ value of CTAC varied from 145±13.35–56±8.27 to 56±8.27–226±8.22 μg/L when exposed to 0–1.13 and 1.13–100.84 μg/L fluoranthene, respectively. Zeta potential of algae initially increased and then decreased with the increase of fluoranthene concentration, whereas residual CTAC concentration displayed an opposite trend in the combined system. These results of this investigation showed that fluoranthene influenced the sorption of CTAC by C. vulgaris. The above results indicated that cationic surfactants and AHs have synergetic toxic effects on aquatic biota. Copyright © 2010 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)1689-1695
JournalEcotoxicology and Environmental Safety
Volume73
Issue number7
DOIs
Publication statusPublished - Oct 2010

Citation

Ge, F., Xu, Y., Zhu, R., Yu, F., Zhu, M., & Wong, M. (2010). Joint action of binary mixtures of cetyltrimethyl ammonium chloride and aromatic hydrocarbons on Chlorella vulgaris. Ecotoxicology and Environmental Safety, 73(7), 1689-1695. doi: 10.1016/j.ecoenv.2010.06.003

Keywords

  • Joint action
  • Cationic surfactant
  • Aromatic hydrocarbons
  • Aquatic organism

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