Review of the occurrence, treatment technologies, and detection methods for saxitoxins in freshwaters DOI Creative Commons
Shardula Gawankar, Susan J. Masten, Rebecca Lahr

et al.

Journal of Water and Health, Journal Year: 2024, Volume and Issue: 22(8), P. 1472 - 1490

Published: July 22, 2024

The increasing occurrence of saxitoxins in freshwaters is becoming a concern for water treatment facilities owing to its structural properties which make it resistant oxidation at pH < 8. Hence, crucial be able monitor these toxins surface and drinking protect public health. This review aims outline the current state knowledge related removal strategies provide critical assessment detection methods basis further development. Temperature nutrient content are some factors that influence production waters. A high dose sodium hypochlorite with sufficient contact time or activated carbon has been shown efficiently remove extracellular meet guidelines. While HILIC-MS proven powerful technology more sensitive reliable saxitoxin variants after solid phase extraction, ELISA cost-effective easy use used by Ohio EPA surveillance limit 0.015 μg/L. However, there need development techniques can quantify saxitoxin.

Language: Английский

Cyanotoxin: A Potential Driver of Microbial Community DOI
Uzma Batool, Linda A. Lawton, B. Jesse Shapiro

et al.

Published: Jan. 1, 2025

Cyanobacterial algal blooms (CyanoHABs) are common biological disturbances in freshwater ecosystems that affect microbial community diversity and composition. While extensive research has focused on cyanobacterial blooms, the direct effects of cyanotoxins communities remain less understood. In this study, we investigated impact various an oligotrophic system Quebec, Canada (45.99°N, 74.00°W). Water samples were exposed to different concentrations MC-LR, MC-RR, MC-LF, CYN, both individually combination. Toxin chosen relation World Health Organization (WHO) regulatory thresholds, 1 μg/L as indicative low toxin exposure (drinking water limit) 1000 high (lake threshold). We performed a longitudinal analysis 16S rRNA assess changes composition at 24-hour, 48-hour, 72-hour intervals. Our findings showed significant change alpha beta diversity, highlighting shifts structure response cyanotoxin doses. Conversely, no detected across diverse compositions. then differential identified several ASVs with relative abundance This highlighted potential degrading bacteria, such Paucibacter, Flavobacterium, Ideonella. Overall, our results more associated doses than Understanding how could lakes is essential for better predicting their ecological impacts, especially these increasingly affected by blooms.

Language: Английский

Citations

0
Deep Learning Network Based Time Series Prediction Model for Cyanobacterial Concentration Using a Many-Objective Algorithm DOI
Liu B, Jiaxin Li

Lecture notes in computer science, Journal Year: 2025, Volume and Issue: unknown, P. 325 - 335

Published: Jan. 1, 2025

Language: Английский

Citations

0
Global Occurrence of Cyanotoxins in Drinking Water Systems: Recent Advances, Human Health Risks, Mitigation, and Future Directions DOI Creative Commons
Jerikias Marumure, Willis Gwenzi, Zakio Makuvara

et al.

Life, Journal Year: 2025, Volume and Issue: 15(5), P. 825 - 825

Published: May 21, 2025

This paper applies a semi-quantitative approach to review the diversity, environmental controls, detection methods, human health risks, and mitigation of cyanotoxins in drinking water systems (DWSs). It discusses factors controlling occurrence cyanotoxins, presents merits limitations emerging methods their (qPCR, liquid chromatography–mass spectrometry, electrochemical biosensors), outlines exposure pathways outcomes with identification high-risk groups settings. High-risk include (1) communities relying on untreated from unsafe, polluted sources (2) low-income countries where are not routinely monitored DWSs. The fate behavior processes discussed, including removing DWSs based conventional advanced treatment processes. available for cyanotoxin removal presented this polymer-based adsorbents, coagulation/flocculation, (3) oxidation processes, (4) ultra- nanofiltration, (5) multi-soil layer systems. Future research should address storage conveyance facilities at point consumption, degradation toxicity by-products or metabolites, interactive effects legacy contaminants, by low-cost techniques (e.g., solar disinfection, boiling, bio-sand filtration, chlorination), quantitative risk profiling groups, (6) epidemiological studies link prevalence cancer)

Language: Английский

Citations

0
Review of the occurrence, treatment technologies, and detection methods for saxitoxins in freshwaters DOI Creative Commons
Shardula Gawankar, Susan J. Masten, Rebecca Lahr

et al.

Journal of Water and Health, Journal Year: 2024, Volume and Issue: 22(8), P. 1472 - 1490

Published: July 22, 2024

The increasing occurrence of saxitoxins in freshwaters is becoming a concern for water treatment facilities owing to its structural properties which make it resistant oxidation at pH < 8. Hence, crucial be able monitor these toxins surface and drinking protect public health. This review aims outline the current state knowledge related removal strategies provide critical assessment detection methods basis further development. Temperature nutrient content are some factors that influence production waters. A high dose sodium hypochlorite with sufficient contact time or activated carbon has been shown efficiently remove extracellular meet guidelines. While HILIC-MS proven powerful technology more sensitive reliable saxitoxin variants after solid phase extraction, ELISA cost-effective easy use used by Ohio EPA surveillance limit 0.015 μg/L. However, there need development techniques can quantify saxitoxin.

Language: Английский

Citations

1