scholarly journals Development of a Fully Automated Flow Injection Analyzer Implementing Bioluminescent Biosensors for Water Toxicity Assessment

Sensors ◽  
2010 ◽  
Vol 10 (8) ◽  
pp. 7089-7098 ◽  
Author(s):  
Efstratios Komaitis ◽  
Efstathios Vasiliou ◽  
Gerasimos Kremmydas ◽  
Dimitrios G. Georgakopoulos ◽  
Constantinos Georgiou
Keyword(s):  
Flow Injection ◽  
Toxicity Assessment ◽  
Water Toxicity

Redox Mediator‐Based Microbial Biosensors for Acute Water Toxicity Assessment: A Critical Review

2020 ◽  
Vol 7 (12) ◽  
pp. 2513-2526 ◽  
Author(s):  
Deyu Fang ◽  
Guanyue Gao ◽  
Yajie Yang ◽  
Yu Wang ◽  
Lijuan Gao ◽  
...  
Keyword(s):  
Critical Review ◽  
Toxicity Assessment ◽  
Redox Mediator ◽  
Water Toxicity

Ozone-Based Technologies for Parabens Removal from Water: Toxicity Assessment

2017 ◽  
Vol 39 (4) ◽  
pp. 233-243 ◽  
Author(s):  
Marco Pipolo ◽  
Marta Gmurek ◽  
Vanessa Corceiro ◽  
Raquel Costa ◽  
M. Emília Quinta-Ferreira ◽  
...  
Keyword(s):  
Toxicity Assessment ◽  
Water Toxicity

scholarly journals A mediator-free whole-cell electrochemical biosensing system for sensitive assessment of heavy metal toxicity in water

2019 ◽  
Vol 79 (6) ◽  
pp. 1071-1080 ◽  
Author(s):  
Yuan Yang ◽  
Zhen Fang ◽  
Yang-Yang Yu ◽  
Yan-Zhai Wang ◽  
Saraschandra Naraginti ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Toxicity ◽  
Toxicity Assessment ◽  
Heavy Metal Toxicity ◽  
Water Toxicity ◽  
Promising Tool ◽  
Electrochemical Biosensing ◽  
Low Toxicity ◽  
Biosensing System ◽  
Optimized Conditions

Abstract A bioelectrochemical sensing system (BES) based on electroactive bacteria (EAB) has been used as a new and promising tool for water toxicity assessment. However, most EAB can reduce heavy metals, which usually results in low toxicity response. Herein, a starvation pre-incubation strategy was developed which successfully avoided the metal reduction during the toxicity sensing period. By integrating this starvation pre-incubation procedure with the amperometric BES, a sensitive, robust and mediator-free biosensing method for heavy metal toxicity assessment was developed. Under the optimized conditions, the IC50 (half maximal inhibitory concentration) values for Cu2+, Ni2+, Cd2+, and Cr6+ obtained were 0.35, 3.49, 6.52, 2.48 mg L−1, respectively. The measurement with real water samples also suggested this method was reliable for practical application. This work demonstrates that it is feasible to use EAB for heavy metal toxicity assessment and provides a new tool for water toxicity warning.

scholarly journals Toxicity Assessment of Treated Sewage Effluent using the Zebrafish Embryo Model

2020 ◽  
Author(s):  
Fatima Abdulwahab Nasser ◽  
Halah Noor Nasir ◽  
Zain Zaki Zakaria ◽  
Huseyin Yalcin
Keyword(s):  
Reverse Osmosis ◽  
Toxicity Assessment ◽  
Hatching Rate ◽  
Wastewater Management ◽  
Sewage Effluent ◽  
Effluent Water ◽  
Zebrafish Model ◽  
Water Toxicity ◽  
Treated Sewage ◽  
Treated Sewage Effluent

Background: In a context of tremendous economic value, the management and protection of water resources in Qatar has long been a significant issue as part of the global wastewater management plan. The process is based on several stages of treatment in order to deliver high-quality effluent standard. Treated sewage effluent (TSE) can potentially be used for agriculture in Qatar and it should be biologically evaluated before releasing it to the environment. TSE water can be further filtered with techniques that include reverse osmosis, forward osmosis, and nanofiltration. Aim: This project aims to assess the toxicity of differently treated sewage effluent water on the environement using the zebrafish model. Our approach will also be relevant to the assessment of the water quality for agriculture use. Methods: Zebrafish embryos were cultured in different effluent water samples filtered with different techniques. Toxicicity of water was assessed via multiple assasys including: survival rate, tail flicking, and hatching rate. Cardiotoxicity assessment was performed via blood velocity, cardiac output and vessels diameter measurement in major vessels, as well as gene expression for heart failure markers of ANP and BNP by PCR. Results: Samples filtered via Reverse osmosis and nano-filtration resulted in most toxicity. Total dissolved solvent (TDS) measurements were also highest in those samples, suggesting these filteration techniques may result in release of toxic compounds to effluent water. Toxicity assessment is currently ongoing to confirm the findindgs. Conclusion: Utilization of TSE for environmental and agricultural purposes will have an economical value in the nation. It is critically important to determine the most efficient and less toxic ways of water filteration. Zebrafish is a practical model that can be used to assess water toxicity. This project aims to examine toxicity of effluent water filteration techniques using the zebrafish model.

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