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CYANOBACTERIAL TOXINS AND 2005 ISOCHAB EXPOSURE ASSESSMENT WORKGROUP
Citation:
DELACRUZ, A. A. CYANOBACTERIAL TOXINS AND 2005 ISOCHAB EXPOSURE ASSESSMENT WORKGROUP. Presented at Association of Analytical Communities (AOAC) International Meeting, Orlando, FL, September 11 - 15, 2005.
Impact/Purpose:
The major objective for this task is to develop analytical methods to detect problematic cyanotoxins in water. A preconcentration/extraction procedure will be initially developed to remove interfering substances with the detection of cyanotoxins in various water matrices. These methods will be used to determine the occurrence/prevalence of cyanotoxins in water and in the cyanobacterial cell culture collection in-house, and compare with the effectiveness of innovative detection methods developed for biological toxins.
Description:
The US EPA, Office of Research and Development, in collaboration with other US federal agencies, is leading the organization of an International Symposium on Cyanobacterial Harmful Algal Blooms on 6-10 September, 2005. The goal of this symposium is to develop a comprehensive national research program on cyanobacteria to meet the mandates of the Harmful Algal Bloom and Hypoxia Research and Control Act (HABHRCA) and to assist the US EPA, Office of Water in making regulatory determinations on cyanobacteria and cyanobacterial toxins. The Agency has yet to publish guidelines or issue regulatory determinations on cyanobacteria or cyanobacterial toxins due to limited exposure and risk assessment data. The symposium is divided into six session topics: Toxins; Exposure Assessment; Occurrence; Effects; Causes, Prevention and Mitigation; and Risk Assessment. This presentation will focus on exposure assessment which deals with methods to detect cyanobacteria and cyanobacterial toxins in various matrices. Advances in field methods, conventional laboratory methods, emerging high-throughput analysis methods as well as sampling and sample processing methods will be highlighted.