RRC ID 56516
Author Misaki K, Morita Y, Kobayashi K, Sugawara Y, Shimizu Y, Kusakabe T.
Title Evaluation of algal photosynthesis inhibition activity for dissolved organic matter with the consideration of inorganic and coloring constituents.
Journal Chemosphere
Abstract The effect of waterborne ingredient on ecosystem has been of great interest. In the present study, the evaluation method using algal photosynthesis inhibition assay with dual-channel pulse amplitude modulation (PAM) system was established for a series of water samples to elucidate the potential effect of the total body of organic compounds including natural organic matter (NOM) on aquatic ecosystems. The more sensitive and less time-consuming monitoring method compared with algal growth inhibition assay was suggested, especially considering inorganic and coloring constituents. Algal photosynthesis inhibition activity was detected with high sensitivity for photosystem II (PSII) inhibitors, whereas the IC10 of the other chemicals was over the environmental standard concentration for Chlamydomonas moewusii (Chlorophyceae) and Pheodactylum tricornutum (Diatomea). The photosynthesis inhibition activity of Lake Biwa dissolved organic matter (LBDOM) and fulvic acid (LBFA) was significantly detected at ≥10 times the concentration and >10 mgC L-1, respectively, whereas prominent activity was confirmed for Suwannee River NOM (SRNOM) on the river original concentration (>30 mgC L-1) for both algae. Significant inhibition activity was detected in both algae at least in twice-concentration for water samples from a wastewater treatment pilot plant. There was no great difference in the activity between sewage secondary effluent and its filtrate with ultrafiltration (UF), and physically washing water for the UF membrane.
Volume 224
Pages 333-342
Published 2019-6-1
DOI 10.1016/j.chemosphere.2019.02.106
PII S0045-6535(19)30330-3
PMID 30826703
MeSH Ammonium Compounds / analysis Chlamydomonas / drug effects* Chlamydomonas / physiology Coloring Agents / analysis Diatoms / drug effects* Diatoms / physiology Humic Substances / analysis* Lakes / chemistry Photosynthesis / drug effects* Ultrafiltration / methods Wastewater / chemistry Water Pollutants, Chemical / analysis* Water Pollutants, Chemical / toxicity Water Purification / methods*
IF 5.108
Times Cited 4
Algae NIES-2170 NIES-2219