A Potentiometric Flow Biosensor Based on Ammonia-Oxidizing Bacteria for the Detection of Toxicity in Water

Zhang, Qianyu; Ding, Jiawang; Kou, Lijuan; Qin, Wei

doi:10.3390/s130606936

Cited by 19 publications

(11 citation statements)

References 22 publications

(19 reference statements)

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“…The selectivity can be further improved by noble metals doping [9,10] or selecting appropriate operating We would like to underline that we preselected the considered ammonia gas sensors and there are other promising technologies which can be effectively used for ammonia sensing because of low production costs or measurement methods. Good examples are biosensors utilizing bacteria cultures or nanotechnology [4][5][6][7][8].…”

Section: Solid-state Ammonia Sensorsmentioning

confidence: 99%

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

et al. 2020

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High precision and fast measurement of gas concentrations is important for both understanding and monitoring various phenomena, from industrial and environmental to medical and scientific applications. This article deals with the recent progress in ammonia detection using in-situ solid-state and optical methods. Due to the continuous progress in material engineering and optoelectronic technologies, these methods are among the most perceptive because of their advantages in a specific application. We present the basics of each technique, their performance limits, and the possibility of further development. The practical implementations of representative examples are described in detail. Finally, we present a performance comparison of selected practical application, accumulating data reported over the preceding decade, and conclude from this comparison.

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Section: Solid-state Ammonia Sensorsmentioning

confidence: 99%

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

et al. 2020

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“…In order to reduce the risk of a possible breakdown of toxic cyanobacterial in drinking water, a multi-barrier approach, comprising prevention, source control, detection optimization and monitoring was recommended [380]. On the other hand, a corresponding approach using an ammonia-oxidizing bacterium (AOB)-based nitrosomonas europaea biosensor has been designed by Zhang et al [381] to determine allylthiourea and thioacetamide concentrations in water by measuring the ammonium oxidation rates. The results showed 0.17 M and 0.46 M for allylthiourea and thioacetamide, respectively.…”

Section: Biosensorsmentioning

confidence: 99%

“…Initially, the model-based event detection method involves a signal-to-noise principles using laboratory and sensor test-loop evaluation. Indication of contamination events is derived from the chemical changes in background water quality signals [88,89], [137][138][139][140][141][142][143], [163], [167], [217], [244,245], [429,430] Sensor Placements Approach [372][373][374][375][376][377], [380][381][382][383][384][385][386][387][388], [391], [400][401][402][403][404][405][406][407], [434][435][436][437][438] Event Detection Model-based -High true positive alarm rate -Low false alarm detections -Fast response time -Complicated calibration process -Highly dependable on predictions and estimations -Computationally intensive…”

Section: Algorithmic Model-based Event Detectionmentioning

confidence: 99%

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Zulkifli

Rahim

Lau

2018

Sensors and Actuators B: Chemical

214

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a b s t r a c tWater monitoring technologies are widely used for contaminants detection in wide variety of water ecology applications such as water treatment plant and water distribution system. A tremendous amount of research has been conducted over the past decades to develop robust and efficient techniques of contaminants detection with minimum operating cost and energy. Recent developments in spectroscopic techniques and biosensor approach have improved the detection sensitivities, quantitatively and qualitatively. The availability of in-situ measurements and multiple detection analyses has expanded the water monitoring applications in various advanced techniques including successful establishment in hand-held sensing devices which improves portability in real-time basis for the detection of contaminant, such as microorganisms, pesticides, heavy metal ions, inorganic and organic components. This paper intends to review the developments in water quality monitoring technologies for the detection of biological and chemical contaminants in accordance with instrumental limitations. Particularly, this review focuses on the most recently developed techniques for water contaminant detection applications. Several recommendations and prospective views on the developments in water quality assessments will also be included.

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“…The Microtox ® assay is sensitive, cost effective and requires only 5 to 30 minutes to make toxicity measurements [7]. In addition to optical based assays, electrochemical biosensors employing bacteria [8][9][10][11][12] and microalgae [13,14] as biological recognition elements have been successfully used to screen heavy metals, pesticides and phenols. Although microbial cells offer advantages such as robustness and good viability in harsh environments, the use of eukaryotic cells for biosensing is of greater physiological relevance to human health [15].…”

Section: Introductionmentioning

confidence: 99%

A portable chemical toxicity biochip based on electronic enzymatic monitoring of cytotoxic effects on fish cells

Hara¹,

Seddon²,

McClean³

et al. 2017

Sensors and Actuators B: Chemical

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Herein we describe a miniaturised chemical toxicity analyser with capacity to assess water quality without intervention of laboratory equipment. The device, as presented, integrates living cells and electrode-based sensors to monitor cell viability upon exposure to toxic chemicals. The methodology involved cultured fish cells Poeciliopsis lucidia hepatocellular carcinoma (PLHC-1) and Oncorhynchus mykiss rainbow trout gonad (RTG-2) cells, exposed to toxic chemicals (CdCl 2 and pentachlorophenol (PCP)) after which the activity of a cellular enzyme, acid phosphatase (AP) was measured. Reduced AP activity was quantified electrochemically, allowing IC 50 values (50% reduction in AP activity) to be determined. Fish cells are a relevant model of the toxicity risks posed by contaminated water to aquatic health. Such cells are relatively slow growing and do not require a source of CO 2 for incubation, thus ensuring portability for single-use point of site applications. The 24 hour IC 50 values determined for CdCl 2 in the fish cell lines (16.2 ± 0.7 and 91 ± 11 M for PLHC and RTG-2, respectively) were in agreement with those found using the MTT assay (16.3 ± 1.6 and 164 ± 96 M). In the case of PCP, the IC 50 value in PHLC cells (127 ± 22 M) suggested enhanced sensitivity towards PCP compared with the MTT assay (IC 50 > 160 M). The optimised electronic assay was transferred to a prototype integrated assay cartridge with associated fluidic and transducer elements. This device (TOXOR) monitored changes in the metabolic state of fish cells, realising high-value toxicity information as a potential early warning on-site screening system.

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A Potentiometric Flow Biosensor Based on Ammonia-Oxidizing Bacteria for the Detection of Toxicity in Water

Cited by 19 publications

References 22 publications

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

A portable chemical toxicity biochip based on electronic enzymatic monitoring of cytotoxic effects on fish cells

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