淀山湖地区藻类细胞计数及微囊藻毒素污染现况调查  

Algae Toxins Contamination in Dianshan Lake

作　　者：郁晞[1,2] 姚新民[1] 黎桂福[1] 王霞[2] 高红梅[1] 

机构地区：[1]上海市青浦区疾病预防控制中心 [2]复旦大学公共卫生学院

出　　处：《环境卫生学杂志》2016年第1期76-78,81,共4页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：上海市卫计委科研资助项目(2012-4376);上海中美合作现场流行病学培训项目

摘　　要：目的了解淀山湖水体中的藻类毒素随季节和地点变化规律。方法于2013年3—9月在淀山湖环湖5个监测点开展每月一次的连续监测,高效液相—质谱联合检测微囊藻毒素-LR,了解淀山湖藻细胞计数和藻毒素浓度变化规律。结果淀山湖水中藻类细胞计数从3月起逐步升高,6月湖中心细胞计数最高,为49.20×105个/L;7月明显下降,8月湖中心监测值为1.65×10~5个/L,监测期均值为2.51×10~5个/L。6月淀山湖中蓝藻计数达到峰值。微囊藻毒素-LR 3月在湖中心监测不到,而在7月水上运动场监测点达到峰值72.0 ng/L,随后呈现下降趋势。结论夏秋季淀山湖水体中优势藻类为蓝藻,有游离微囊藻毒素存在,峰值在藻细胞计数峰值后1个月。湖中心微囊藻毒素水平较低。Objectives To find out the rule and distribution of algae toxins in Dianshan lake. Methods Microcystin（ MC）- LR in water samples from 5 points in Dianshan lake were examined monthly by LC-MS / MS during March to September in 2013,and the counts of algae cell were also monitored. Results The counts of algae cell had begun to raise since March,and got peak in June（ 49. 20 × 10~5/ L）,then fallen down in July; the counts of algae cell in August was 1. 65 × 10~5/ L in the center of the lake,the average count was 2. 51 × 10~5/ L; The toxic MC-LR could not be detected in March in the center of the lake,which was 72 ng / L in the sports pool in July,and then the toxin began to fall down. Conclusions Blue algae was the dominant algae in Dianshan lake,free MC-LR could be examined,and the peak of MC-LR was emerged a month later of the peak of algae cells counts. The relatively low levels of MC-LR were found in the center of the lake.

关 键 词：蓝藻 微囊藻毒素 藻类细胞计数 游离藻毒素 

分 类 号：X524[环境科学与工程—环境工程]