Sensitive layer based on Lophine and calcium hydroxide for detection of dissolved oxygen in water

Camas-Anzueto, J.L.; Gómez-Valdéz, J.A.; Meza‐Gordillo, Rocío; Pérez-Patricio, Madaín; León, H.R. Hernández de; León-Orozco, V.

doi:10.1016/j.measurement.2015.02.015

Cited by 11 publications

(5 citation statements)

References 23 publications

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“…In recent years, oxygen sensors with different optical principles developed rapidly, such as the fluorescence quenching principle, the phosphorescence quenching principle [93,94,95], the near-infrared principle, and the absorption principle [96,97]. At present, most optical dissolved oxygen sensors are based on fluorescence quenching principle.…”

Section: Dissolved Oxygen Detection Technologiesmentioning

confidence: 99%

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Wei

Jiao

et al. 2019

Sensors

127

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Dissolved oxygen is an important index to evaluate water quality, and its concentration is of great significance in industrial production, environmental monitoring, aquaculture, food production, and other fields. As its change is a continuous dynamic process, the dissolved oxygen concentration needs to be accurately measured in real time. In this paper, the principles, main applications, advantages, and disadvantages of iodometric titration, electrochemical detection, and optical detection, which are commonly used dissolved oxygen detection methods, are systematically analyzed and summarized. The detection mechanisms and materials of electrochemical and optical detection methods are examined and reviewed. Because external environmental factors readily cause interferences in dissolved oxygen detection, the traditional detection methods cannot adequately meet the accuracy, real-time, stability, and other measurement requirements; thus, it is urgent to use intelligent methods to make up for these deficiencies. This paper studies the application of intelligent technology in intelligent signal transfer processing, digital signal processing, and the real-time dynamic adaptive compensation and correction of dissolved oxygen sensors. The combined application of optical detection technology, new fluorescence-sensitive materials, and intelligent technology is the focus of future research on dissolved oxygen sensors.

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Section: Dissolved Oxygen Detection Technologiesmentioning

confidence: 99%

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Wei

Jiao

et al. 2019

Sensors

127

View full text Add to dashboard Cite

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“…Many studies concerning the development of DO sensors based on luminescence are described in the literature. Three main mechanisms are exploited: phosphorescence quenching [34][35][36], near-infrared, and absorption principle [37,38]. Nowadays, most commercialized optical DO sensors are based on fluorescence quenching.…”

Section: Luminescence Methodsmentioning

confidence: 99%

The Challenges of O2 Detection in Biological Fluids: Classical Methods and Translation to Clinical Applications

Marassi

Giordani

Kurevija³

et al. 2022

IJMS

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Dissolved oxygen (DO) is deeply involved in preserving the life of cellular tissues and human beings due to its key role in cellular metabolism: its alterations may reflect important pathophysiological conditions. DO levels are measured to identify pathological conditions, explain pathophysiological mechanisms, and monitor the efficacy of therapeutic approaches. This is particularly relevant when the measurements are performed in vivo but also in contexts where a variety of biological and synthetic media are used, such as ex vivo organ perfusion. A reliable measurement of medium oxygenation ensures a high-quality process. It is crucial to provide a high-accuracy, real-time method for DO quantification, which could be robust towards different medium compositions and temperatures. In fact, biological fluids and synthetic clinical fluids represent a challenging environment where DO interacts with various compounds and can change continuously and dynamically, and further precaution is needed to obtain reliable results. This study aims to present and discuss the main oxygen detection and quantification methods, focusing on the technical needs for their translation to clinical practice. Firstly, we resumed all the main methodologies and advancements concerning dissolved oxygen determination. After identifying the main groups of all the available techniques for DO sensing based on their mechanisms and applicability, we focused on transferring the most promising approaches to a clinical in vivo/ex vivo setting.

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“…DO is an important parameter for the assessment of water quality because many chemical and biological reactions depend directly or indirectly on the DO content, and values below 5 mg L -1 may harm aquatic life (Camas-Anzueto et al, 2015). Maximum values of TDS ( Figure 3) were observed at P3 (162 mg L -1 ), P4 (214 mg L -1 ) and P5 (153 mg L -1 ).…”

Section: Silveira G a Et Almentioning

confidence: 99%

Farming and soil urban occupation in the water quality of Jaboticabal and Cerradinho streams

et al. 2016

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Since the end of the twentieth century, 100% of the urban sewage from the city of Jaboticabal has been collected by interceptors and routed to a treatment plant. Between 1999 and 2000, studies on the effect of this environmental care showed that it did not efficiently clean up the water from the two streams that run through the city and flow into an agricultural area. This paper focuses on assessing the influence of soil use on the water quality of surface waters from these two streams. The study was conducted 15 years after the implementation of sewage interceptors. The sampling dates were bimonthly at eight points (P1 to P8) in the Cerradinho and Jaboticabal streams, in Jaboticabal (São Paulo State, Brazil). P1 was located at the source of the Jaboticabal stream, P2 was in a farming area, P3, P4 and P5 were in an urban area, and P6, P7 and P8 were in a farming area. The physical and chemical variables of the water were assessed. We compared the ability of microorganisms to metabolize different sources of carbon using the EcoPlate (Biolog). The total phosphorus (TP) concentration exceeded the limit set by the Brazilian legislation as well as values found in previous studies, which was also observed for the chemical oxygen demand. However, the bacterial metabolic profile had no association with urban or farming practices. The results of the analysis indicated the possibility of clandestine discharge of wastewater in the streams studied and the influence of the agricultural soil.Index terms: Leaching; EcoPlate; metabolic profile; water resources. RESUMODesde o final do século vinte, 100% do esgoto urbano da cidade de Jaboticabal é recolhido por interceptores e conduzido a uma estação de tratamento. Entre 1999 e 2000, estudos sobre o efeito desse cuidado ambiental, mostraram que a coleta de esgoto ainda não tinha sido eficiente para despoluir as águas dos dois córregos que atravessam a cidade e fluem para uma área agrícola. Neste trabalho avalia-se a influência do uso do solo na qualidade da água destes dois córregos. O estudo foi realizado 15 anos após a implantação dos interceptores de esgoto. Durante o ano de 2014, bimestralmente, coletaram-se amostras de água em oito pontos (P1 a P8), dos córregos Cerradinho e Jaboticabal, em Jaboticabal (SP, Brasil). P1 estava localizado na nascente do córrego Jaboticabal; P2 em área agrícola; P3, P4 e P5 em área urbana; P6, P7 e P8 em área agrícola. Foram determinadas variáveis físicas e químicas e a comparação metabólica da população microbiana em diversas fontes de carbono pelo método EcoPlate (Biolog). Em todos os pontos e coletas, o teor de fósforo total excedeu o limite estabelecido pela legislação brasileira, assim como valores encontrados em estudos anteriores, o que também foi observado em relação à demanda química de oxigênio. Entretanto, a população microbiana da água parece não estar sendo alterada pelas atividades urbanas e agrícolas. Os resultados das análises sinalizam à possibilidade de descarga clandestina de águas residuárias nos córregos estudados e...

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Sensitive layer based on Lophine and calcium hydroxide for detection of dissolved oxygen in water

Cited by 11 publications

References 23 publications

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

The Challenges of O2 Detection in Biological Fluids: Classical Methods and Translation to Clinical Applications

Farming and soil urban occupation in the water quality of Jaboticabal and Cerradinho streams

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