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基于太湖微囊藻毒素的叶绿素a阈值研究
引用本文:魏代春,苏婧,纪丹凤,伏小勇,王骥,霍守亮,崔驰飞,唐军,席北斗.基于太湖微囊藻毒素的叶绿素a阈值研究[J].环境科学,2014,35(12):4530-4536.
作者姓名:魏代春  苏婧  纪丹凤  伏小勇  王骥  霍守亮  崔驰飞  唐军  席北斗
作者单位:1. 中国环境科学研究院地下水与环境系统工程创新基地,北京 100012; 兰州交通大学环境与市政工程学院,兰州 730070
2. 中国环境科学研究院地下水与环境系统工程创新基地,北京 100012; 广东省浩蓝环保水污染治理院士工作站,广州 510630
3. 中国环境科学研究院地下水与环境系统工程创新基地,北京,100012
4. 兰州交通大学环境与市政工程学院,兰州,730070
基金项目:国家水体污染控制与治理科技重大专项,国家自然科学基金项目
摘    要:以探讨叶绿素a(Chl-a)阈值为主要目的于2013年6~10月间每月在太湖采样,通过固相萃取超高效液相色谱串联质谱法对水体中3种微囊藻毒素(MC-LR、MC-RR、MC-YR)进行检测.利用SPSS软件分析各种形态的微囊藻毒素(MCs)与总氮(TN)、总磷(TP)、Chl-a、高锰酸盐指数等富营养指标的相关性,分析了MC-LR、MCs与Chl-a的关系.结果表明,太湖MCs污染较严重,其浓度的空间分布特征为:梅梁湾>贡湖、西部沿岸区>湖心区>胥湖区、南部湖区,并以MC-LR浓度最高;相关性分析表明MC-LR、MC-RR、MC-YR及MCs均与高锰酸盐指数、TN、TP、Chl-a呈极显著正相关(P<0.01).结合饮用水中MC-LR和MCs的标准限值分析得出,太湖Chl-a的阈值是12.26 mg·m-3,与美国北卡罗莱纳州湖泊的Chl-a标准值比较属于安全阈值,具有一定的科学性.

关 键 词:太湖  微囊藻毒素  叶绿素a  富营养指标  阈值
收稿时间:2014/5/15 0:00:00
修稿时间:2014/6/26 0:00:00

Research on the Threshold of Chl-a in Lake Taihu Based on Microcystins
WEI Dai-chun,SU Jing,JI Dan-feng,FU Xiao-yong,WANG Ji,HUO Shou-liang,CUI Chi-fei,TANG Jun and XI Bei-dou.Research on the Threshold of Chl-a in Lake Taihu Based on Microcystins[J].Chinese Journal of Environmental Science,2014,35(12):4530-4536.
Authors:WEI Dai-chun  SU Jing  JI Dan-feng  FU Xiao-yong  WANG Ji  HUO Shou-liang  CUI Chi-fei  TANG Jun and XI Bei-dou
Institution:Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;CNHOMELAND Environmental Protection Water Pollution Governance Academician Workstation, Guangzhou 510630, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Innovation Base of Ground Water and Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Abstract:Water samples were collected in Lake Taihu from June to October in 2013 in order to investigate the threshold of chlorophyll a (Chl-a). The concentrations of three microcystins isomers (MC-LR, MC-RR, MC-YR) were detected by means of solid phase extraction and high performance liquid chromatography-tandem mass spectrometry. The correlations between various MCs and eutrophication factors, for instance of total nitrogen(TN), total phosphorus(TP), chlorophyll a, permanganate index etc were analyzed. The threshold of Chl-a was studied based on the relationships between MC-LR, MCs and Chl-a. The results showed that Lake Taihu was severely polluted by MCs and its spatial distribution could be described as follows: the concentration in Meiliang Bay was the highest, followed by Gonghu Bay and Western Lake, and Lake Center; the least polluted areas were in Lake Xuhu and Southern Lake. The concentration of MC-LR was the highest among the 3 MCs. The correlation analysis indicated that MC-LR, MC-RR, MC-YR and MCs had very positive correlation with permanganate index, TN, TP and Chl-a (P< 0.01). The threshold value of Chl-a was 12.26 mg·m-3 according to the standard thresholds of MC-LR and MCs in drinking water. The threshold value of Chl-a in Lake Taihu was very close to the standard in the State of North Carolina, which demonstrated that the threshold value provided in this study was reasonable.
Keywords:Lake Taihu  microcystins  chlorophyll a  eutrophication factors  threshold
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