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Effects of sample pretreatment and particle size on the determination of nitrogen in soil by portable LIBS and potential use on robotic-borne remote Martian and agricultural soil analysis systems

XT Yan, KM Donaldson, CM Davidson, Y Gao, H Wu… – RSC Advances, 2018 Abstract Field determination of nitrogen in soil is of interest for both terrestrial and Martian applications. Improved management of soil nitrogen levels on Earth could benefit global food...

Development of a Spectrophotometric Method for Determining pH of Soil Extracts and Comparison with Glass Electrode Measurements

 S Bargrizan, RJ Smernik, LM Mosley – Soil Science Society of America Journal, 2017 Abstract Soil pH measurement using conventional glass electrodes has several limitations. A spectrophotometric method was developed for determining soil pH involving indicator...
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