Toxicity of bisphenol A and its bioaccumulation and removal by a marine microalga Stephanodiscus hantzschii

Rui Li, Gui Zhu Chen, Nora Fung Yee Tam, Tian Gang Luan, Paul K.S. Shin, S. G. Cheung, Yu Liu

Research output: Contribution to journalArticlepeer-review

151 Citations (Scopus)

Abstract

The toxicity of bisphenol A (BPA) to Stephanodiscus hantzschii, a diatom isolated from tidal water of Futian Mangrove Nature Reserve, China, and the bioaccumulation and removal capability of the marine microalga to BPA were investigated in the present study. Toxicity experiments showed that the 96-h EC50 of BPA was 8.65±0.26 mg/L, and the cell number and chlorophyll a content of S. hantzschii decreased significantly with increases in BPA at concentrations higher than 3.00 mg/L. S. hantzschii had high removal capability at low BPA concentrations as BPA was bioaccumulated and biodegraded by cells. After 16-day treatment, 88%, 99%, 92%, 61%, 48%, 28% and 26% of BPA were removed by the diatom in the media supplemented with 0.01, 0.10, 1.00, 3.00, 5.00, 7.00 and 9.00 mg/L BPA, respectively. The present study demonstrated that S. hantzschii was a tolerant isolate that could be used to remove BPA from contaminated waters.

Original languageEnglish
Pages (from-to)321-328
Number of pages8
JournalEcotoxicology and Environmental Safety
Volume72
Issue number2
DOIs
Publication statusPublished - Feb 2009
Externally publishedYes

Keywords

  • Bioaccumulation
  • Bisphenol A
  • Removal
  • Stephanodiscus hantzschii
  • Toxicity

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