title: Identification and determination of microcystins in source water and waterbloom sample from Meiliang Bay, Taihu Lake, China.
abstract: OBJECTIVE
  To identify and determine the congener and level of microcystins in the source water of Taihu Lake.
  
  
  METHODS
  Improved method of SPE combined with HPLC was employed to detect the concentration and varieties of microcystins in source water and bloom samples collected from Meiliang Bay, Taihu Lake.
  
  
  RESULTS
  The contents of two predominant microcystin components, MC-RR, and MC-LR, were relatively high in samples during warm months and correlated with the phase of algae growth. The maximum concentrations of MC-RR and MC-LR in water sample reached 3.09 +/- 0.53 microg/L and 2.39 +/- 0.41 microg/L during the period of water bloom in September 2004, respectively. Even without waterbloom, the concentration of MC-LR in source water sample was still higher than the guideline value.
  
  
  CONCLUSIONS
  The status of microcystin pollution in this region is serious and measures to monitor and control the growth of cyanobacteria are urgently needed.
authors.affiliation: The Key Laboratory of Molecular & Biomolecular Electronics, Department of Biomedical Engineering, Southeast University, Nanjing, Jiangsu, China. fengxg@seu.edu.cn
authors.forename: Xiao-Gang
authors.initials: XG
authors.lastname: Feng
authors.forename: Zhen
authors.initials: Z
authors.lastname: Ding
authors.forename: Tao
authors.initials: T
authors.lastname: Wei
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Yuan
authors.forename: De-Gang
authors.initials: DG
authors.lastname: Fu
mesh_terms: D000818:Animals; D001427:Bacterial Toxins / Q000032:analysis*; D002681:China; D002851:Chromatography, High Pressure Liquid; D000458:Cyanobacteria / Q000254:growth & development / Q000302:isolation & purification; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis* / Q000737:chemistry; D052998:Microcystins / Q000032:analysis* / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D014871:Water Microbiology; D014874:Water Pollutants, Chemical
chemical_list: D001427:Bacterial Toxins; D052998:Microcystins; D014874:Water Pollutants, Chemical; C078588:microcystin