Miniaturized water quality monitoring pH and conductivity sensors

被引：74

作者：

Banna, Muinul H. ^{[1
]}

Najjaran, Homayoun ^{[1
]}

Sadiq, Rehan ^{[1
]}

Imran, Syed A. ^{[2
]}

Rodriguez, Manuel J. ^{[3
]}

Hoorfar, Mina ^{[1
]}

机构：

[1] Univ British Columbia, Sch Engn, Kelowna, BC, Canada

[2] Aquastruct Solut Inc, Regina, SK, Canada

[3] Univ Laval, Ecole Super Amenagement Terr, Quebec City, PQ, Canada

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 193卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Miniaturized water quality sensor; pH sensor; Conductivity sensor; Hydrogel; Interdigitated electrode; Serpentine flow channel interface; GELS; BIOSENSORS; HYDROGELS; COLLAPSE;

D O I：

10.1016/j.snb.2013.12.002

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The development of cost-effective, durable and sensitive on-line water quality monitoring sensors that can be installed across water distribution networks has attracted attention to increase the frequency of monitoring and hence reduce the risk of accidental or deliberate contaminations or improve routine control of water quality. This paper presents microsensors fabricated and implemented in a serpentine channel interface for the measurement of pH and conductivity, two important water quality parameters. The performance of these sensors was tested in both still (static) and flowing (dynamic) water. The serpentine channel interface, numerically optimized, provides a constant flow and a constant outlet pressure condition for dynamic experiments. Tests conducted for evaluating the effect of the exposure time on the sensor performance show no change in the sensor response even after one month. Finally, the pH and conductivity sensors were compared against the common commercial sensors used for evaluating water quality. The results show that the pH and conductivity sensors are as precise as the commercial sensors in both static and dynamic conditions. However, the cost of the sensors presented here is significantly lower than that of the commercial sensors. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：434 / 441

页数：8

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