TITLE:
New Records of Microcystins in Some Bulgarian Water Bodies of Health and Conservational Importance
AUTHORS:
Vera Pavlova, Maya Stoyneva, Vesela Georgieva, Desislav Donchev, Lisa Spoof, Jussi Meriluoto, Zlatka Bratanova, Irina Karadjova
KEYWORDS:
Cyanobacteria, Cyanotoxins, Microcystins
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.6 No.5,
April
21,
2014
ABSTRACT:
Microcystins
cause acute hepatotoxicity and chronic liver tumor promotion. This study presents
the results of HPLC DAD analyses and their LC-MS confirmation of samples from five
Bulgarian water bodies (reservoirs Stoudena, Pchelina, Bistritsa and lakes Dourankoulak,
Vaya). The total concentration of microcystins in water samples ranged from 0.1
to 26.5 μg/l. The amount of microcystins
in the biomasses ranged from 11.4 to 49.6 μg/g (d.w.). The high percent of positive
samples in which the most toxic microcystin-LR is recorded, can serve as a strong
alarm for the necessity of a serious study and relevant discussion of the problem
with responsible authorities at national level.