Abstract:To explore the bioavailability of DON to toxic algae and its chemical nature in Xiamen Tingxi reservoir, an experiment on the growth of Microcystis aeruginosa was conducted based on the solid phase extraction and membrane separation technique for water sample. Results showed that it is variable for the different seasonal concentrations of DON in Tingxi reservoir. DON concentration was higher in dry season, but lower in wet season. The primary components of DON were hydrophobic and >3kDa counterparts in both dry and wet season. The bioavailable DON reached 65.20% in the typical reservoir. Specifically, the hydrophilic and £3kDa counterparts of DON were relatively easy to be utilized by Microcystis aeruginosa. As the security of source water and the protection of water environment are concerned, it is of great importance to firstly remove the hydrophilic and low molecular weight counterparts of DON in freshwater.
王振红, 罗专溪, 魏群山. 厦门汀溪水库溶解有机氮对有毒藻种的生物有效性及其化学本质[J]. 中国环境科学, 2011, 31(10): 1684-1689.
WANG Zhen-Hong, LUO Zhuan-Xi, WEI Qun-Shan. Bioavailability of dissolved organic nitrogen to toxic algae and its chemical nature in Xiamen Tingxi reservoir.. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(10): 1684-1689.