Abstract
This paper presents an experimental platform allowing in situ measurement in an aqueous medium using an acoustic Love wave sensor. The aim of this platform, which includes the sensor, a test cell for electrical connections, a microfluidic chip, and a readout electronic circuit, is to realize a first estimation of water quality without transportation of water samples from the field to the laboratory as a medium-term objective. In the first step, to validate the ability of such a platform to operate in the field and in Amazonian water, an isolated and difficult-to-access location, namely, the floodplain Logo Do Curuaï in the Brazilian Amazon, was chosen. The ability of such a platform to be transported, installed on site, and used is discussed in terms of user friendliness and versatility. The response of the Love wave sensor to in situ water samples is estimated according to the physical parameters of Amazonian water. Finally, the very good quality of the acoustic response is established, potential further improvements are discussed, and the paper is concluded.
Highlights
The Amazonian area, which is localized in nine countries of South America (Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname, and French Guiana), is experiencing a period of fast development based on political strategies whose objectives are to exploit the resources of its soil, underground, and rivers
We present the results obtained in Amazonian water using the proposed experimental experimental portable Love wave acoustic platform
This paper presents the results of a in-field experiment with an acoustic Love wave platform
Summary
The Amazonian area, which is localized in nine countries of South America (Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname, and French Guiana), is experiencing a period of fast development based on political strategies whose objectives are to exploit the resources of its soil, underground, and rivers. Human activities involving mining, agriculture, energy, and transport infrastructure are spread over increasingly large Amazonian virgin territories Such activities cause some problematic issues and environmental changes that could irreversibly interfere with, or even completely disrupt, the fauna, the flora, and human health in these areas [1,2]. Remote sensing offers the advantage of being easy to implement with the appropriate software to analyze a large surface area using satellite images [3,4]. This method is not appropriate for the estimation of biochemical compounds, especially in the water column, except in some specific cases [5]
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