A low-cost autonomous optical sensor for water quality monitoring

Murphy, Kevin J.; Heery, Brendan; Sullivan, Timothy M.; Zhang, Dian; Paludetti, Lizandra F.; Lau, King Tong; Diamond, Dermot; Costa, Ernane José Xavier; O’Connor, Noel E.; Regan, Fiona

doi:10.1016/j.talanta.2014.09.045

Cited by 79 publications

(50 citation statements)

References 18 publications

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“…Recently, the cost of commercially available sensors has stimulated the development of alternative low-cost, robust sensors and data loggers: opensource software, electronics, and off-the-shelf hardware store items, combined with low-cost microcontrollers (Pearce, 2012). For example, low-cost water quality sensors have been developed and tested for parameters such as pH and conductivity, temperature, toxicity, and turbidity (Banna et al, 2014;Chapin, Todd, & Zeigler, 2014;Murphy et al, 2015;Tuna, Arkoc, & Gulez, 2013;Yagur-Kroll et al, 2015), although few sensors have actually been deployed in the field. Offthe-shelf cameras have also been applied successfully to record water level (Gilmore, Birgand, & Chapman, 2013) and discharge (Bradley, Kruger, Meselhe, & Muste, 2002;Tsubaki, Fujita, & Tsutsumi, 2011), plant phenology (Crimmins & Crimmins, 2008;Nijland et al, 2014), and cloud cover (Scholl, 2015).…”

Section: New Sensors and Data Loggersmentioning

confidence: 99%

Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology

et al. 2017

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In response to increasing pressures on water resources, watershed services management programs are implemented throughout the tropics. These programs aim to promote land management activities that enhance the quantity and quality of water available to local communities. The success of these programs hinges on our ability to (a) understand the impacts of watershed interventions on ecohydrology; (b) model these impacts and design efficient management programs; and (c) develop strategies to overcome barriers to practical policy development, including resource limitations or the absence of baseline data. In this paper, we review opportunities in ecohydrological science that will help address these three challenges. The opportunities are grouped into measurement techniques, modelling approaches, and access to resources in our hyperconnected world. We then assess management implications of both the knowledge gaps and the new research developments related to the effect of land management. Overall, we stress the importance of policy‐relevant knowledge for implementing efficient and equitable watershed services programs in the tropics.

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Section: New Sensors and Data Loggersmentioning

confidence: 99%

Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology

et al. 2017

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“…Prolonged recording at the upper detection limit (1200NTU) indicated that the sensor had silted up following the first event. Bio-fouling of optical sensors remains a considerable limitation to monitoring certain parameters such as turbidity (e.g., Bourgeois et al, 2003 andMurphy et al, 2015), though self-wiping sensors that reduce or prevent siltation are increasingly being used (Bringhurst andAdams, 2011 andMurphy et al, 2015). The resulting NSEs suggest an overall very good performance of the model (where a perfect match between modelled and observed discharge would be 1).…”

Section: Event Hydrology and Water Quality Dynamicsmentioning

confidence: 99%

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

McGrane

Hutchins

Miller

et al. 2017

Journal of Hydrology

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Please cite this article as: McGrane, S.J., Hutchins, M.G., Miller, J.D., Bussi, G., Kjeldsen, T.R., Loewenthal, M., During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear ruralurban gradient, Journal of Hydrology (2016), doi: http://dx.doi.org/10. 1016/j.jhydrol.2016.12.037 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. from the data do not appear to be severe enough to cause ecological harm.

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“…The design of water quality monitoring programs has always been a challenge due to the many variables that need to be included [14]. Additionally, water managers must respond to new challenges and to keep up with the latest developments and trends concerning the water quality research and monitoring, such as the chemical mixtures [15], microplastics [16], the management practices [17,18], recent legislation, and, especially, the goals set by the Water Framework Directive (WFD 2000/60/EC) of the European Community (EU) [19], but also new tools such as effect-based tools (bioassays, biomarkers [20,21]), remote sensing [22], advances in monitoring sensors (e.g., nanophotonic biosensors [23] and optical sensors [24]), and automation technology system [25].…”

Section: Introductionmentioning

confidence: 99%

Designing the National Network for Automatic Monitoring of Water Quality Parameters in Greece

Mentzafou

Panagopoulos

Dimitriou

2019

Water

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Water quality indices that describe the status of water are commonly used in freshwater vulnerability assessment. The design of river water quality monitoring programs has always been a complex process and despite the numerous methodologies employed by experts, there is still no generally accepted, holistic and practical approach to support all the phases and elements related. Here, a Geographical Information System (GIS)-based multicriteria decision analysis approach was adopted so as to contribute to the design of the national network for monitoring of water quality parameters in Greece that will additionally fulfill the urgent needs for an operational, real-time monitoring of the water resources. During this cost-effective and easily applied procedure the high priority areas were defined by taking into consideration the most important conditioning factors that impose pressures on rivers and the special conditions that increase the need for monitoring locally. The areas of increased need for automatic monitoring of water quality parameters are highlighted and the output map is validated. The sites in high priority areas are proposed for the installation of automatic monitoring stations and the installation and maintenance budget is presented. Finally, the proposed network is contrasted with the current automatic monitoring network in Greece.

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A low-cost autonomous optical sensor for water quality monitoring

Cited by 79 publications

References 18 publications

Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology

Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology

During a winter of storms in a small UK catchment, hydrology and water quality responses follow a clear rural-urban gradient

Designing the National Network for Automatic Monitoring of Water Quality Parameters in Greece

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