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Design and implementation of a low-cost multiparameter probe to evaluate the temporal variations of water quality conditions on an estuarine lagoon system

Authors
  • Méndez-Barroso, L. A.1, 2
  • Rivas-Márquez, J. A.1
  • Sosa-Tinoco, I.2, 3
  • Robles-Morúa, A.1
  • 1 Instituto Tecnológico de Sonora, 5 de Febrero 818 sur, Ciudad Obregón, Sonora, 85000, Mexico , Ciudad Obregón (Mexico)
  • 2 Laboratorio Nacional de Resiliencia Costera (LANRESC), Northwest headquarters, Ciudad Obregón, Mexico , Ciudad Obregón (Mexico)
  • 3 Instituto Tecnológico de Sonora, Ciudad Obregón, Mexico , Ciudad Obregón (Mexico)
Type
Published Article
Journal
Environmental Monitoring and Assessment
Publisher
Springer-Verlag
Publication Date
Oct 17, 2020
Volume
192
Issue
11
Identifiers
DOI: 10.1007/s10661-020-08677-5
Source
Springer Nature
Keywords
License
Yellow

Abstract

The measurement of physicochemical variables to infer water quality is important since they help determine the distribution and abundance of aquatic organisms or pollution-related problems. Recently, the development of low-cost probes is a suitable alternative for continuous monitoring of these variables rather than the use of expensive instruments. In this work, a low-cost multiparameter probe (LCMP) has been developed to monitor water quality in an estuary located in Northwestern Mexico during a 3-month period. The LCMP integrates different sensors to an Arduino Nano microcontroller allowing to measure electrical conductivity, dissolved oxygen, pH, salinity, water temperature, and tide level. Data files were stored in a data logger system consisting of a secure digital (SD) card module and a real-time clock module coupled to the Arduino microcontroller. To ensure continuous operation, the system was powered by four 3.7 V, 10,000 mAh rechargeable LiPo batteries. All LCMP components were encapsulated in a polyvinyl chloride pipe. The results show that the LCMP had a good agreement with a commercial-grade multiparameter probe and was able to monitor continuously in hourly time steps. Finally, the LCMP proved to be an alternative for the establishment of coastal observatories, which has been deficient due to limited funding.

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