Using Optical Sensor Applied to Rapid Soil Test Kit for NH4+ and NO3- in Soil
Chawaroj Jaisin,
Suphathida Aumtong,
Charkit Chotamonsak
Abstract:This study aims to construct simple devices to ascertain the concentrations of ammonium (NH4+) and nitrate (NO3-). The device structure comprises a visible and near-infrared absorption meas-urement room, along with an RGB (red, green, and blue) absorption measurement room, con-stituting the two measuring rooms. Both the measurement rooms are equipped with light sources and detectors configured to operate in opposed or thru-beam modes. A tiny processor is utilized for processing the measurements, with an algori… Show more
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