cyanobacteria and cyanotoxins occurrence and removal from five high-risk conventional treatment drinking water plants

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ID: 230643
2015
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Abstract
An environmental protection agency EPA expert workshop prioritized three cyanotoxins, microcystins, anatoxin-a, and cylindrospermopsin (MAC), as being important in freshwaters of the United States. This study evaluated the prevalence of potentially toxin producing cyanobacteria cell numbers relative to the presence and quantity of the MAC toxins in the context of this framework. Total and potential toxin producing cyanobacteria cell counts were conducted on weekly raw and finished water samples from utilities located in five US states. An Enzyme-Linked Immunosorbant Assay (ELISA) was used to screen the raw and finished water samples for microcystins. High-pressure liquid chromatography with a photodiode array detector (HPLC/PDA) verified microcystin concentrations and quantified anatoxin-a and cylindrospermopsin concentrations. Four of the five utilities experienced cyanobacterial blooms in their raw water. Raw water samples from three utilities showed detectable levels of microcystins and a fourth utility had detectable levels of both microcystin and cylindrospermopsin. No utilities had detectable concentrations of anatoxin-a. These conventional plants effectively removed the cyanobacterial cells and all finished water samples showed MAC levels below the detection limit by ELISA and HPLC/PDA.
Reference Key
szlag2015toxinscyanobacteria Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;David C. Szlag;James L. Sinclair;Benjamin Southwell;Judy A. Westrick
Journal matec web of conferences
Year 2015
DOI
10.3390/toxins7062198
URL
http://www.mdpi.com/2072-6651/7/6/2198
Keywords
cyanobacteria

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