Identification and determination of microcystins in source water and waterbloom sample from Meiliang Bay, Taihu Lake, China.
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.
Feng
Xiao-Gang
XG
The Key Laboratory of Molecular & Biomolecular Electronics, Department of Biomedical Engineering, Southeast University, Nanjing, Jiangsu, China. fengxg@seu.edu.cn
Ding
Zhen
Z
Wei
Tao
T
Yuan
Chun-Wei
CW
Fu
De-Gang
DG
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
D001427:Bacterial Toxins; D052998:Microcystins; D014874:Water Pollutants, Chemical; C078588:microcystin