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Papers
61,005 resultsShowing papers similar to Evaluation of Surface Water Quality with Biochemical Assays
ClearThe peroxidase toxicity assay for the rapid evaluation of municipal effluent quality
Researchers validated a rapid enzyme-based test for evaluating the toxicity of municipal wastewater effluents and found it could detect harmful effects from a range of pollutants including microplastics, pharmaceuticals, and metals. The test showed that microplastics in wastewater interfered with enzyme activity in a dose-dependent manner. The study offers a fast and cost-effective screening tool that could help water treatment facilities monitor effluent quality more frequently.
The Pyruvate-Glyoxalate Pathway as an Alternative Toxicity Assessment Tool of Xenobiotics: Lessons from Prebiotic Chemistry
Researchers proposed a simple biogenic screening tool for aquatic toxicity assessment based on the pyruvate-glyoxalate (pyr-glyox) metabolic pathway, testing its response to xenobiotics and complex pollutant mixtures. The assay detected dose-dependent toxicity and offered a low-cost alternative to conventional bioassays for early-stage water quality monitoring.
The Pyruvate-Glyoxalate Pathway as an Alternative Toxicity Assessment Tool of Xenobiotics: Lessons from Prebiotic Chemistry
Researchers proposed a simple biochemical pathway based on the reaction between pyruvate and glyoxalate as a rapid screening tool for assessing the toxicity of environmental contaminants including microplastics. They found that various xenobiotics inhibited this pathway in measurable ways, making it useful for detecting toxic effects. The study offers an inexpensive alternative to traditional toxicity testing methods that could help evaluate the risks of complex pollutant mixtures in water.
Screening of municipal effluents with the peroxidase toxicity assay
This study screened municipal effluents using a peroxidase toxicity assay, quantifying the combined oxidative stress potential of wastewater discharges and evaluating whether treatment reduces this form of biological toxicity.
In vitro bioassays for monitoring drinking water quality of tap water, domestic filtration and bottled water
Researchers used cell-based bioassays to assess the toxicity of tap water, bottled water, and home-filtered water and found that non-regulated disinfection byproducts — chemical compounds formed when water is treated — were the main drivers of oxidative stress responses. The study demonstrates that standard chemical testing alone misses important toxicological hazards in drinking water.
Assessment of Biological Toxicity and Ecological Safety for Urban Black-Odor River Remediation
Researchers applied a battery of biological toxicity tests — including algal growth inhibition and Daphnia mortality — to evaluate ecological safety in an urban black-odor river before and after remediation, finding that physical-chemical improvements alone did not fully eliminate biological toxicity. The study highlights the need to incorporate ecotoxicological endpoints alongside conventional water quality parameters when assessing remediation success.
Simple microfluidic devices for in situ detection of water contamination: a state-of-art review
This review covers recent advances in simple, low-cost microfluidic devices designed for on-site water quality testing rather than expensive laboratory analysis. Researchers found that these portable lab-on-a-chip devices can detect biological, chemical, and physical contaminants including microplastics with increasing accuracy. The study highlights the potential for these tools to make water safety monitoring more accessible, especially in resource-limited settings.
Screening of municipal effluents with the peroxidase toxicity assay
Researchers used a quick enzyme-based test called the peroxidase assay to screen seven types of municipal wastewater treatment processes, finding that 60% of treated effluents released compounds toxic to DNA into the environment, including nanoplastics. The study highlights gaps in conventional wastewater treatment and the ongoing risk of releasing harmful contaminants into waterways.
Field validated biomarker (ValidBIO) based assessment of impacts of various pollutants in water
This review examines field-validated biomarker approaches for monitoring water pollution, showing that enzymatic activity changes in fish exposed to heavy metals, pesticides, microplastics, and persistent organic pollutants serve as sensitive and reliable indicators of aquatic contamination across diverse environments.
Urban Water Quality Assessment Based on Remote Sensing Reflectance Optical Classification
Researchers developed an urban water quality assessment method combining remote sensing reflectance optical classification with traditional water quality grading principles, enabling spatially and temporally continuous monitoring of urban water bodies.
Assessing the ecological risk of representative wastewater based on a growth inhibition method with freshwater algae (Raphidocelis subcapitata)
Researchers developed a sensitive algae-based test using chlorophyll fluorescence to rapidly assess how toxic industrial wastewaters are to aquatic ecosystems, finding that different wastewater types caused widely varying levels of harm to the test algae. The method offers a practical and responsive tool for monitoring whether industrial discharges pose risks to rivers and other water bodies.
Tools for monitoring toxicological and genotoxicological changes in a drinking water treatment plant in Northeast Italy
Researchers used multiple bioassays including Daphnia, algae, and human leukocytes to monitor toxicological changes in a drinking water treatment plant in northeast Italy treating fluorinated compound-contaminated groundwater. While standard chemical parameters met regulatory limits, some biological tests detected residual toxicity after treatment, highlighting the value of bioassays for water safety assessment.
Detection of metallic pollutants in waste water using bio sensors and its remediation
This review examines biosensor technologies for detecting metallic pollutants in wastewater, including approaches for monitoring diverse contaminants from industrial and urban sources. The study highlights how continuous real-time monitoring using biosensors can help address the growing threat of water pollution to human health and ecosystems.
How much do the conventional parameters contribute to the biological toxicity of surface water in different types of villages?
Researchers investigated surface water quality in different types of Chinese villages and found that conventional physicochemical parameters alone were insufficient to fully characterize biological toxicity, with the contribution of each parameter varying significantly by village type and pollution source.
Developing Low-Cost In-Situ Water Pollution Sensors
Researchers reviewed low-cost in-situ sensor technologies for detecting water pollutants including heavy metals, pharmaceuticals, and emerging contaminants, evaluating their sensitivity, selectivity, and feasibility for deployment in resource-limited settings.
Citizen science approaches for water quality measurements
Researchers reviewed 72 studies that used citizen science — data collection by trained volunteers rather than professional scientists — to monitor surface water quality, evaluating the methods used and the strengths and weaknesses of each approach. The review highlights citizen science as a valuable complement to traditional water monitoring, particularly for expanding geographic and temporal coverage of data collection.
A preliminary study of direct observation and selected water quality monitoring in Putrajaya Lake: the status between October-December 2022
Researchers conducted a preliminary study combining direct observation of aquatic environments with selected water quality monitoring parameters, developing a simplified field methodology for rapid assessment of freshwater ecosystem health. The approach demonstrated that combining visual habitat assessment with targeted chemical measurements could efficiently characterize ecological condition in resource-limited monitoring contexts.
Aquatic ecosystem indices, linking ecosystem health to human health risks
Researchers reviewed indicators used to assess aquatic ecosystem health and found that most existing tools don't adequately capture the risks that degraded water ecosystems pose to human health and well-being. They propose a new set of combined indicators — covering chemical contaminants, pathogens, and biological markers — to better link ecosystem health monitoring to human health outcomes.
The Pyruvate–Glyoxalate Pathway as a Toxicity Assessment Tool of Xenobiotics: Lessons from Prebiotic Chemistry
This study proposes using a simple prebiotic chemical reaction — the condensation of pyruvate and glyoxalate to form malate — as an inexpensive screening tool for xenobiotic toxicity assessment, demonstrating that the assay is sensitive to a range of environmental contaminants including phthalates.
Integrated Electrochemical Biosensors for Detection of Waterborne Pathogens in Low-Resource Settings
This review covers the development of electrochemical biosensors integrated with microfluidic components for detecting waterborne pathogens, highlighting their potential for portable, affordable water quality monitoring in developing countries. The authors discuss how these devices could address critical gaps in current water safety infrastructure in low-resource settings.
Aquatic biomonitoring: Importance, challenges, and limitations
This review examined aquatic biomonitoring approaches for detecting micropollutants including pesticides, pharmaceuticals, metals, and microplastics, discussing methodological challenges in capturing real-world exposure effects across diverse regional environmental conditions. The authors highlighted the importance of combining laboratory toxicity studies with in-situ monitoring to better predict risks from individual and mixed contaminants in Latin American ecosystems.
Flow-Injection Methods in Water Analysis—Recent Developments
This review examined recent developments in flow-injection analysis methods for water quality monitoring, covering improvements in reliability, efficiency, and cost-effectiveness for detecting contaminants including emerging pollutants in water systems.
Rapid Microfluidic Electrochemical Sensor for the Detection of Heavy Metal Ions in Water Sample
This paper reviews the development of a microfluidic electrochemical sensor for detecting toxic heavy metal ions in water samples. Human activities including mining, industrial waste, and improper disposal of microplastics in water bodies release heavy metals that pose serious health risks. The sensor offers a rapid, low-cost alternative to laboratory analysis for monitoring water quality.
A Low-Cost Electrochemical Cell Sensor Based on MWCNT-COOH/α-Fe2O3 for Toxicity Detection of Drinking Water Disinfection Byproducts
A low-cost electrochemical sensor based on MWCNT-COOH/α-Fe2O3 was developed to detect toxicity of drinking water disinfection byproducts, offering a simpler and faster alternative to traditional bioassays for assessing health risks in treated water supplies.