Abstract
Among the harmful algal blooms (HABs), cyanobacterial blooms (CyanoHABs) are one of the most studied and well known, as they constitute a worldwide environmental problem, with serious repercussions on human and animal health. Cyanobacteria can produce a wide variety of substances with different biological activities, many identified as potent toxins. Thus, the need to control and create regulations on this issue is crucial to ensure human health. In this article we provide a short and condensed general review of toxin concentration levels and exposure scenarios which are included in the legislation, standards, and guidelines that are in effect in different countries. Most national regulations are aimed to ensure the safety of potable water supply, and, as far as cyanotoxins are concerned, they usually include the minimum concentrations above which a health hazard is presumed. However, a very limited spectrum of toxins is considered. In addition, the global picture shows clear regional inequalities in terms of indicator variables, action levels, and existing knowledge about the affected ecosystems, the distribution of cyanobacteria, and their toxins. A general drawback lies in the fact that the regulations do not usually recommend specific measurement analytics, which hampers the intercalibration and application of standards.
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Cobo, F., Barca, S., Vieira-Lanero, R., Cobo, M.C. (2023). International Environmental Standards for the Regulation of Freshwater Cyanobacterial Blooms and Their Biotoxins. In: Neilan, B., Passarini, M.R.Z., Singh, P.K., Kumar, A. (eds) Cyanobacterial Biotechnology in the 21st Century. Springer, Singapore. https://doi.org/10.1007/978-981-99-0181-4_12
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