Cyanobacteria and their toxins in Guanting Reservoir of Beijing, China

The present study investigated the cyanobacteria and one family of their toxins-microcystins (MCs) in Guanting Reservoir of Beijing, China. The dominant species in the cyanobacteria found in August and September of 2006 was Microcystis, which accounted 99% of total algal cells. The specific species...

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Bibliographic Details
Published in:Journal of hazardous materials 2008-05, Vol.153 (1), p.470-477
Main Authors: Dai, Ruihua, Liu, Huijuan, Qu, Jiuhui, Ru, Jia, Hou, Yining
Format: Article
Language:English
Subjects:
Applied sciences
Bacterial Toxins - analysis
China
Colony Count, Microbial
Environmental Monitoring
Exact sciences and technology
Freshwater
Guanting Reservoir
Investigation
Microcystins
Microcystins - analysis
Microcystis
Microcystis - chemistry
Microcystis - classification
Microcystis - isolation & purification
Microcystis aeruginosa
Microcystis botrys
Microcystis novacekii
Nitrogen - analysis
Phosphorus - analysis
Pollution
Water Microbiology
Water Pollutants - analysis
Water Supply - analysis
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Summary:The present study investigated the cyanobacteria and one family of their toxins-microcystins (MCs) in Guanting Reservoir of Beijing, China. The dominant species in the cyanobacteria found in August and September of 2006 was Microcystis, which accounted 99% of total algal cells. The specific species of the Microcystis in the cyanobacteria included Microcystis ichthyobalbe, Microcystis novacekii, Microcystis botrys and Microcystis aeruginosa which had different ratios in different sites. The qualitative analysis by HPLC showed that two microcystins were contained in cyanobacteria and one microcystin was in water of the reservoir. The major microcystins were microcystin-RR (MC-RR) and microcystin-LR (MC-LR), but only MC-LR was detected in water. The quantitative analysis by HPLC indicated that the maximum concentrations of MC-RR and MC-LR contained in cyanobacteria were 0.74 and 0.41 mg/g dry weight, respectively. The maximum microcystin concentration in water was 1.15 μg/L and others were below 1 μg/L.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2007.08.078