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Critical Reviews™ in Biomedical Engineering
SJR: 0.207 SNIP: 0.376 CiteScore™: 0.79

ISSN Imprimer: 0278-940X
ISSN En ligne: 1943-619X

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Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.2017019704
pages 357-382

A Review of Sensing Systems and Their Need for Environmental Water Monitoring

Leo Huan-Hsuan Hsu
School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
Aditya Aryasomayajula
Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
Ponnambalam R. Selvaganapathy
Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada

RÉSUMÉ

Water is a valuable natural resource and is needed to sustain human life. Water pollution significantly jeopardizes clean drinking water supplies, it is hazardous to human health, and it inhibits economic development. Well-designed sensors that can continuously monitor water quality during transport and identify contaminants in the watershed help effectively control pollution and thereby manage water resources. However, the commercially available sensors are expensive and require frequent maintenance. These limitations often make these sensors inadequate for continuous water monitoring applications. This review evaluates many sensors based on colorimetric, electrochemical, and optical sensors. Sensors suitable for estimating the amount of dissolved oxygen, nitrates, chlorine, and phosphates are presented. A review of recently developed high quality sensors for measuring the previously mentioned components of water is also presented. Future directions in this area of developing high quality sensors for water monitoring are discussed.