Limited analytical capacity for cyanotoxins in developing countries may hide serious environmental health problems: Simple and affordable methods may be the answer

Macarena Pírez, Gualberto Gonzalez-Sapienza, Daniel Sienra, Graciela Ferrari, Michael Last, Jerold A Last, Beatriz M. Brena

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In recent years, the international demand for commodities has prompted enormous growth in agriculture in most South American countries. Due to intensive use of fertilizers, cyanobacterial blooms have become a recurrent phenomenon throughout the continent, but their potential health risk remains largely unknown due to the lack of analytical capacity. In this paper we report the main results and conclusions of more than five years of systematic monitoring of cyanobacterial blooms in 20 beaches of Montevideo, Uruguay, on the Rio de la Plata, the fifth largest basin in the world. A locally developed microcystin ELISA was used to establish a sustainable monitoring program that revealed seasonal peaks of extremely high toxicity, more than one-thousand-fold greater than the WHO limit for recreational water. Comparison with cyanobacterial cell counts and chlorophyll-a determination, two commonly used parameters for indirect estimation of toxicity, showed that such indicators can be highly misleading. On the other hand, the accumulated experience led to the definition of a simple criterion for visual classification of blooms, that can be used by trained lifeguards and technicians to take rapid on-site decisions on beach management. The simple and low cost approach is broadly applicable to risk assessment and risk management in developing countries.

Original languageEnglish (US)
Pages (from-to)63-71
Number of pages9
JournalJournal of Environmental Management
Volume114
DOIs
StatePublished - Jan 5 2013

Fingerprint

Medical problems
Beaches
Developing countries
Toxicity
algal bloom
developing world
Monitoring
Health risks
Chlorophyll
beach
Fertilizers
Risk management
Risk assessment
Agriculture
toxicity
monitoring
health risk
commodity
chlorophyll a
risk assessment

Keywords

  • Cyanobacteria
  • ELISA
  • Harmful algal blooms
  • Microcystins
  • South America
  • Uruguay

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

Cite this

Limited analytical capacity for cyanotoxins in developing countries may hide serious environmental health problems : Simple and affordable methods may be the answer. / Pírez, Macarena; Gonzalez-Sapienza, Gualberto; Sienra, Daniel; Ferrari, Graciela; Last, Michael; Last, Jerold A; Brena, Beatriz M.

In: Journal of Environmental Management, Vol. 114, 05.01.2013, p. 63-71.

Research output: Contribution to journalArticle

Pírez, Macarena ; Gonzalez-Sapienza, Gualberto ; Sienra, Daniel ; Ferrari, Graciela ; Last, Michael ; Last, Jerold A ; Brena, Beatriz M. / Limited analytical capacity for cyanotoxins in developing countries may hide serious environmental health problems : Simple and affordable methods may be the answer. In: Journal of Environmental Management. 2013 ; Vol. 114. pp. 63-71.
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