Abstract：Objective To investigate the temporal-spatial distribution of microcystins-LR (MC-LR) and related factors in water body of Taihu Lake so as to provide basic data for safe water supply in cities around Taihu Lake. Methods Fifteen sampling points were defined in the water body of Taihu Lake, and water samples were collected monthly from January 2010 to December 2011. MC-LR concentration was detected by highly sensitive time-resolved fluorescence immunoassay, and alage density, water temperature, permanganate index, nitrate-nitrogen and chlorophyll-a were also detected. Results The MC-LR concentration reached the peak in November, and it is significantly higher in dry season than in wet season (0.129±0.024 μg/L vs. 0.087±0.008 μg/L, t=25.71, P=0.0012), in the northern (0.150±0.028 μg/L) and western parts (0.121±0.014 μg/L) of Taihu Lake than in the eastern (0.077±0.015 μg/L), southern (0.076±0.014 μg/L) and central parts (0.075±0.012 μg/L, all P<0.001). Alage density was found to be the highest in September, higher in wet season than in dry season [(913±548)×104/L vs. (467±170)×104/L, P<0.001] as well as higher in the southern[(1,061±409)×104/L) and central parts [(1,039±556)×104/L] than in the western[(580±216)×104/L], northern[(618±306)×104/L] and eastern parts[(572±218)×104/L, all P<0.001]. Conclusions The pollution of MC-LR in the water body of Taihu Lake has time and regional differences, and it is not consistent with the change trend of algae density. It is necessary to strengthen the monitoring so as to ensure the safety of water supply.
周伟杰, 丁新良, 黄春华, 陈晓峰, 钮伟民. 太湖水体微囊藻毒素-LR及相关因子时空分布[J]. 实用预防医学, 2016, 23(9): 1048-1051.
ZHOU Wei-jie, DING Xin-liang, HUANG Chun-hua, CHEN Xiao-feng, NIU Wei-min. Temporal-spatial distribution of microcystins-LR and related factors in water body of Taihu Lake. , 2016, 23(9): 1048-1051.
[1] Paerl HW, Hall NS, Calandrino ES. Controlling harmful cyanobacterial bloomsin a world experiencing anthropogenic and climatic-induced change[J]. Sci Total Environ,2011, 409(10):1739-1745. [2] Hitzfeld BC, Hger SJ, Dietrich DR. Cyanobacterial toxins: removal duringdrinking water treatment, and human risk assessment[J]. Environ Health Perspect, 2000, 108(Suppl 1):113-122. [3] 周伟杰, 刘萍, 李雪,等. 太湖淡水螺体内微囊藻毒素污染动态研究[J]. 实用预防医学,2012, 19(3):349-351. [4] Chen J,XIE P,Li L,et al.First identification of the hepatotoxic microcystins in the serum of a chronically exposed human population together with indication of hepatocellular damage[J].Toxicol Sci,2009,108(1):81-89. [5] Li Y,Chen JA,Zhao Q,et al.A cross-sectional investigation of chronicexposure to microcystin in relationship to childhood liver damage in the Three Gorges Reservoir region,China[J].Environ Health Perspect,2011,119(10):1483-1488. [6] Newcombe G, Nicholson BC. Water treatment options for dissolved cyanotoxins[J].J Water Supply Res T, 2004, 53(4):227-239. [7] 刘成, 高乃云, 黄廷林. 水处理工艺去除藻毒素的效果探讨[J]. 环境污染与防治, 2006, 28(1):40-43. [8] 陈晓峰, 何恩奇, 周伟杰,等. 环太湖地区微囊藻毒素-LR同相关污染指标相关性分析[J]. 环境卫生学杂志,2011, 1(1):11-13. [9] Niu WM,He EQ,Wu QG,et al.Use of fluorescent europium chelates as labelsfor the detection of microcystin-LR in Taihu Lake,China[J].J Rare Earths, 2012,30(9):941-946 [10] 国家环境保护总局.HJ 493-2009 水和废水监测分析方法 [S].北京: 中国环境科学出版社,2002. [11] 国家环境保护总局.GB 3838-2002地表水环境质量标准[S]. 北京:中国环境科学出版社,2002. [12] 张胜花,葛芳杰,王红强,等.不同氮磷营养条件下铜绿微囊藻对正磷酸盐的蓄积效果[J].长江流域资源与环境,2008,17(6):909. [13] 陈晓峰, 何恩奇, 周伟杰,等. 产毒微囊藻mcyA基因荧光定量PCR方法的建立[J]. 环境科学与技术, 2011, 34(1):66-70. [14] 纪荣平,李先宁,吕锡武,等. 太湖梅梁湾水源水中微囊藻毒素浓度的变化[J].环境监测管理与技术, 2007, 19(1):20-22.
2016, Vol. 23 
