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首页> 外文期刊>Environmental earth sciences >The occurrence of cyanobacteria and microcystins in the Hoan Kiem Lake and the Nui Coc reservoir (North Vietnam)
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The occurrence of cyanobacteria and microcystins in the Hoan Kiem Lake and the Nui Coc reservoir (North Vietnam)

机译：还剑湖和Nui Coc水库（北越）中的蓝细菌和微囊藻毒素的发生

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摘要

The occurrence of increasing blooms of toxic cyanobacteria in freshwaters has received much attention due to the ability of many cyanobacteria to produce potent cyanotoxins. In this paper, the occurrence of dominant cyanobacteria and the concentration of microcystins (MCs) analysis were investigated monthly from July 2008 to April 2009 in the Hoan Kiem Lake and from February to April 2009 in the Nui Coc reservoir. Concentrations of intra-cellular MCs from water, bloom samples, and isolated strains were quantified by using high performance liquid chromatography (HPLC). During the study period, the microscopic examination of the phytoplankton samples showed the dominance of the genus Microcystis in the water environment of the Hoan Kiem Lake and the Nui Coc reservoir. The toxin analysis by HPLC demonstrated the presence of two MC variants: MC-LR and MC-RR in water samples. Total concentrations of the toxins in filtered samples from surface water ranged from non-detected to 0.91 μg L~(-1) at Nui Coc reservoir and they ranged from 2.1 to 46.0 μg L~(-1) at Hoan Kiem Lake. The results of the HPLC analysis confirmed the production of MCs in bloom samples (ranged from 115.9 to 184.6 μg L~(-1) in the Hoan Kiem Lake and from 726.5 to 1116 μg L~(-1) in the Nui Coc reservoir) and isolated strains of Anabaena sp. and Microcystis with the concentration of MC ranging from 152 to 396.2 μg g~(-1) dry mass, respectively.
机译：由于许多蓝细菌具有产生有效蓝藻毒素的能力，因此在淡水中出现越来越多的有毒蓝细菌的水华已经引起了广泛的关注。本文从2008年7月至2009年4月在还剑湖以及2009年2月至2009年4月在努伊古克水库每月调查一次主要的蓝细菌的发生和微囊藻毒素浓度的分析。通过使用高效液相色谱（HPLC）定量分析水，水华样品和分离菌株中细胞内MC的浓度。在研究期间，对浮游植物样本的显微镜检查显示，在还剑湖和Nui Coc水库的水环境中，微囊藻属占优势。通过HPLC进行的毒素分析表明，水样中存在两种MC变体：MC-LR和MC-RR。在Nui Coc水库中，从地表水中过滤的样品中毒素的总浓度为未检测到的0.91μgL〜（-1），在还剑湖的范围为2.1至46.0μgL〜（-1）。 HPLC分析的结果证实了绽放样品中MC的产生（在还剑湖中为115.9至184.6μgL〜（-1），在Nui Coc水库中为726.5至1116μgL〜（-1））和分离的鱼腥藻菌株。 MC的浓度分别为干重的152〜396.2μgg〜（-1）。

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  • 来源
    《Environmental earth sciences》 |2014年第5期|2419-2427|共9页
  • 作者

    Thi Thuy Duong; Sabine Jaehnichen; Thi Phuong Quynh Le; Cuong Tu Ho; Trung Kien Hoang; Trung Kien Nguyen; Thi Nguyet Vu; Dinh Kim Dang;

  • 作者单位

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Dresden University of Technology, Institute of Hydrobiology, 01062 Dresden, Germany;

    Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

    Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam;

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  • 正文语种 eng
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  • 关键词

    Cyanobacteria; Hoan Kiem Lake; Microcystins; Nui Coc reservoir;

    机译：蓝细菌;还剑湖;微囊藻毒素;努伊库克水库;

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