Journal
WATER ENVIRONMENT RESEARCH
Volume 87, Issue 11, Pages 1949-1954Publisher
WILEY
DOI: 10.2175/106143015X14362865226635
Keywords
sodium hypochlorite; Prorocentrum minimum; EC50; chlorophyll autofluorescence; antioxidant enzyme activity
Funding
- National Research Foundation of Korea (NRF) - Ministry of Education - Korean government [2013R1A1A2013596]
- National Fisheries Research and Development (NFRDI)
- Korea Institute of Marine Science and Technology Promotion (KIMST)/Ministry of Oceans and Fisheries (MOF)
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Effects of the biocide sodium hypochlorite (NaOCl) on the dinoflagellate Prorocentrum minimum were assessed. Growth rate, pigment concentrations, and chlorophyll autofluorescence were monitored up to 72 hours after NaOCl exposure, and these parameters showed dose-and time-dependent decrease. The 72-hour EC50 was 0.983 mg/L. Additionally, enzymatic activities of lipid peroxidation and reduced glutathione were significantly altered with increasing NaOCl and exposure time. Thus, NaOCl at doses of 0.5 mg/L induces physiological and biochemical changes in P. minimum, suggesting that chlorine concentrations observed in power plant discharges and in drinking water systems are potentially detrimental to microalgae.
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