Invention Grant
- Patent Title: Measurement of nitrate-nitrogen concentration in soil based on absorption spectroscopy
- Patent Title (中): 基于吸收光谱测量土壤中硝态氮浓度
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Application No.: US12775762Application Date: 2010-05-07
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Publication No.: US08472023B2Publication Date: 2013-06-25
- Inventor: Michael John Preiner , Nicholas Carleton Koshnick , Justin Stewart White , John Paul Strachan
- Applicant: Michael John Preiner , Nicholas Carleton Koshnick , Justin Stewart White , John Paul Strachan
- Applicant Address: US CA Mountain View
- Assignee: Solum, Inc.
- Current Assignee: Solum, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Fenwick & West LLP
- Main IPC: G01N21/00
- IPC: G01N21/00
Abstract:
The nitrate-nitrogen concentration in soil is estimated based on the nitrate-nitrogen 200 nm absorption peak. In one embodiment, a device measures the attenuation spectrum of a soil-extractant mixture over a wavelength range that includes wavelengths in the vicinity of the 200 nm absorption peak (the spectral operating range) and then determines the nitrate-nitrogen concentration based on the attenuation spectrum.
Public/Granted literature
- US20100283994A1 Measurement of Nitrate-Nitrogen Concentration in Soil based on Absorption Spectroscopy Public/Granted day:2010-11-11
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