In this presentation a new instrument will be introduced based on the previous knowledge of the 2007 Phoenix Mars Scout Lander, and in particular the Wet Chemical Laboratory (WCL). The In-Situ Chemical Analysis Laboratory & Sensor Array (CHEMSENS) under development is to further characterize soil samples via wet chemistry experiments in remote sites both on Earth and other planets. CHEMSENS has been designed with an increased number of sensors in order to increase the accuracy and reproducibility of the measurements, as well as to increase the number of samples that can be analyzed remotely when mounted onto a rover. CHEMSENS will include sensors for the measurement of Na+, K+, NH4+, Ca2+, Mg2+, pH, Cl-, NO3-/ClO4- and conductivity. A challenge of this project has been the development of potentiometric microsensors in order to minimize sample cell volume and increase the number of sensors. Results to overcome this challenge will be presented.

Novel electroanalytical instrument for soil samples: CHEMSENS

242nd National Meeting (2011)

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