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  Global Journal of Analytical Chemistry. Volume 2, Issue 1 (2011) pp. 1-7
  Research Article
 
LC-MS/MS determination of cyanobacterial toxins in drinking and surface water samples
  Xiaoliang Chenga, Honglan Shia, Craig D Adamsb, Terry Timmonsc, Yinfa Maa,*  
     
a Department of Chemistry and Environmental Research Center, Missouri University of Science and Technology Rolla, MO 65409, USA
b Department of Civil, Environmental and Architectural Engineering, University of Kansas, Lawrence, KS 66044, USA
c Missouri Department of Natural Resources, Jefferson City, MO, USA

   
  Abstract  
  The presence of cyanobacteria and their toxins in water bodies have emerged as a worldwide concern due to the perceived increase in occurrence and severity. There is a need for simple, inexpensive methods for rapid screening of cyanotoxins in a wide variety of water types. This work developed a fast and easy method for quantitative analysis of nine major cyanotoxins using liquid chromatography-tandem mass spectrometry without sample cleanup processes such as solid phase extraction. The method has the limit of quantification ranges of 0.002-0.1 µg/L and a good linearity was obtained over a concentration range of 0.02-100 µg/L. The method has been successfully applied to different water matrix including reagent water, river water and wastewater in a reproducible manner. The quantitative analyses show a precision with RSDs of around 6% to 17% in untreated river water and 9.9% to 18.3% in treated wastewater. It also screened 68 water samples, both untreated source water and treated, from 34 different water treatment plants across Missouri for cyanotoxins. Samples were collected from several water resources, including the Missouri river, the Mississippi River, groundwater, lakes, reservoirs, and wells. However cyanotoxins were detected below limit of quantification in all samples.
     
  Keywords  
  Cyanotoxins; Mass spectrometry; Occurrence  
     
   
   
   
   
     

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