Home|Journals|Articles by Year Follow on Twitter

Directory for Medical Articles

Open Access

Original Research

Egypt. J. Phycol.. 2012; 13(1): 1-25

Microcystins in raw water, drinking water, and some isolates of Cyanoprokaryotes

Mohammad I. Abdel-Hamid*, Emad H. Abdel-Halim, Yehia A. Azab.

Raw water samples of two drinking water treatment plants (named New Mansoura and Bilqas stations) were collected for a full annual cycle. Analyses of total soluble inorganic N, dissolved reactive phosphorus (DRP) and Total dissolved phosphorus (TDP) were carried out. Qualitative and quantitative analysis of Cyanoprokaryotes and photosynthetic pigments of phytoplankton were investigated. Total microcystins of raw water supply and potable water were seasonally analyzed using ELISA. Seven Cyanobprokaryotes species were isolated, cultured under lab conditions and biomass contents of microcystin–LR and -YR were analyzed using HPLC. Physico-chemical characteristics and photosynthetic pigments displayed pronounced periodic variations. Species composition and abundance of Cyanoprokaryotes exhibited marked seasonal variation during the period of study. Cyanoprokaryotes biovolume peaked in summer at New Mansoura (214.3mm3m-3) and Bilqas (161.3 mm3m-3) water treatment stations. The minimum mean biovolume of 25.2 and 30.8 mm3m-3 were recorded in winter at New Mansoura and in autumn at Bilqas station, respectively. Total microcystins in raw water maintained seasonal variations. Microcystins values were 2.2 and 2.0 µg l-1 during summer at Bilqas and New Mansoura respectively. Theses values of 1µg l-1 exceeding the WHO guidelines. Total microcystins of potable water were below the WHO guideline except in summer at New Mansoura (1.2µg l-1). Microcystins in biomass of different species of Cyanoprokaryotes varied between 3.0 mg g-1 (8% LR and 92%YR) and 0.3 mg g-1 (100% LR) recorded for Anabaena oryzae and Anabaena khannae, respectively.

Key words: Cyanoprokaryotes, Cyanotoxins, Drinking water, Microcystins.

Similar Articles

Multiclass cyanotoxin analysis in reservoir waters: Tandem solid-phase extraction followed by zwitterionic hydrophilic interaction liquid chromatography-mass spectrometry.
Aparicio-Muriana MM, Carmona-Molero R, Lara FJ, García-Campaña AM, Del Olmo-Iruela M
Talanta. 2022; 237(): 122929

Application of atmospheric pressure glow discharge generated in contact with liquids for determination of chloride and bromide in water and juice samples by optical emission spectrometry.
Gorska M, Pohl P
Talanta. 2022; 237(): 122921

Novel insights into the adsorption of organic contaminants by biochar: A review.
Luo Z, Yao B, Yang X, Wang L, Xu Z, Yan X, Tian L, Zhou H, Zhou Y
Chemosphere. 2022; 287(Pt 2): 132113

Dissolution of cellulose into supercritical water and its dissolving state followed by structure formation from the solution system.
Hirase R, Miyamoto H, Yuguchi Y, Yamane C
Carbohydrate polymers. 2022; 275(): 118669

Evaluating the contribution of subsurface drainage to watershed water yield using SWAT+ with groundwater modeling.
Bailey RT, Bieger K, Flores L, Tomer M
The Science of the total environment. 2022; 802(): 149962

Full-text options

Latest Statistics about COVID-19
• pubstat.org

Add your Article(s) to Indexes
• citeindex.org

Covid-19 Trends and Statistics
Follow ScopeMed on Twitter
Author Tools
eJPort Journal Hosting
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright © ScopeMed® Information Services.

ScopeMed Web Sites