Sakai Hiroshi, Hao Aimin, Iseri Yasushi, Wang Song, Kuba Takahiro, Zhang Zhenjia, Katayama Hiroyuki
Department of Urban Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
ScientificWorldJournal. 2013 Jun 16;2013:838176. doi: 10.1155/2013/838176. Print 2013.
The occurrence and distribution of microcystins were investigated in Lake Taihu, the third largest lake in China. An extensive survey, larger and broader in scale than previous studies, was conducted in summer 2010. The highest microcystin concentration was found at southern part of Taihu, which was newly included in this survey. In northern coastal areas, total cellular concentrations of 20 to 44 μg/L were observed. In northern offshore waters, levels were up to 4.8 μg/L. Microcystin occurrence was highly correlated with chemical oxygen demand, turbidity, and chlorophyll-a. Extracellular/total cellular microcystin (E/T) ratios were calculated and compared to other water quality parameters. A higher correlation was found using E/T ratios than original microcystin values. These results show that algal blooms are having a severe impact on Lake Taihu, and further and extensive monitoring and research are required to suppress blooms effectively.
在中国第三大湖泊太湖中对微囊藻毒素的发生和分布情况进行了调查研究。2010年夏季开展了一项规模比以往研究更大、范围更广的广泛调查。微囊藻毒素的最高浓度出现在太湖的南部，该区域是此次调查新纳入的。在北部沿海地区，观察到细胞总浓度为20至44μg/L。在北部近海水域，浓度高达4.8μg/L。微囊藻毒素的出现与化学需氧量、浊度和叶绿素a高度相关。计算了细胞外/细胞总微囊藻毒素（E/T）比率，并将其与其他水质参数进行比较。发现使用E/T比率比原始微囊藻毒素值具有更高的相关性。这些结果表明，藻华正在对太湖产生严重影响，需要进一步进行广泛的监测和研究，以有效抑制藻华。
